Sales Engagement & Outreach
M

Mailshake

One of the longest running dedicated cold email tools, launched 2017 and bootstrapped without venture funding, since widened into multichannel sales engagement. Sequences run through the buyer's own connected mailbox across the major providers rather than through infrastructure of the vendor's own, with a phone dialer and social touches added on the top tier. A writing assistant drafts and tests copy, a lead surfacing view prioritizes engaged replies, and a separately priced contact finding module supplies prospect records by credit. Native two way synchronization with the major customer relationship platforms is the capability independent reviewers most consistently single out.

Last VerifiedAugust 20, 2026
Compare Mailshake with other vendors
Founded
2017
Headquarters
—
Website
mailshake.com
Categories
sales-engagement, data-and-enrichment, dialers-and-voice
Assessment

Capability Axes

Capability grades

17 of 17 axes rated · 6 graded A or B

AI Capability
AI CentralityAI CentralityWhether AI is the product or a feature veneer. The removal test: peel the AI label off, and does anything sellable remain?
CC on AI CentralityAI features on a conventional platform. Peel the AI label off and the product still works roughly as before.
Vendor Published

The writing assistant is a named, branded feature on a platform that predates the current wave by most of a decade, and the removal test settles it quickly: sequences, the connected mailbox, throttling, the lead surfacing view, the dialer, social touches, the contact finder and the customer relationship synchronisation all survive intact without it.

This is the established platform pattern the convention was written for, applied to a 2017 vendor rather than to an enterprise suite, and it is not a harsh read. The tier structure agrees, since the assistant sits inside the middle plan as one line item among many rather than as the reason the plan exists.

Autonomy and Oversight ModelAutonomy and Oversight ModelWhat the system does without a human. Draft for review, auto send, or fully agentic, and what contains a bad run.
CC on Autonomy and Oversight ModelAutonomy is claimed or implied with the oversight model asserted rather than documented. Buyers cannot tell from public sources what runs unsupervised.
Vendor Published

Nothing here acts unsupervised. Sequences execute on a schedule the buyer sets, the writing assistant proposes copy a human sends, and the lead surfacing view exists specifically to route engaged replies to a person rather than to answer them. That is a comparatively restrained design and it is worth crediting against the several vendors in this session that sell unsupervised reply handling.

What is absent is any published control around the assistive layer itself: whether generated copy passes a review step before it enters a live sequence, and whether any record is kept of what was generated and sent, are both unstated.

AI Disclosure and Model TransparencyAI Disclosure and Model TransparencyWhat models power the product, whether AI generated outreach discloses itself, and whether scoring and routing logic is explainable.
CC on AI Disclosure and Model TransparencyThe product is described as AI powered with the stack, the disclosure behavior, and the scoring logic all unstated.
Vendor Published

The writing assistant carries a brand name and that is the extent of what is disclosed about it. Model, provider, version, hosting location and boundary are unstated everywhere read, including in the privacy policy, which discusses model training in one narrow respect without ever identifying what models are involved. The gap is more conspicuous here than at a smaller vendor, because the same privacy policy demonstrates that this company is willing to write precisely about technical matters when it chooses to.

Operational and Outcome EvidenceOperational and Outcome EvidenceMeasured outcomes with a stated basis: replies, meetings, pipeline, win rates. Logos are not evidence and prestige is not measurement.
CC on Operational and Outcome EvidenceOutcome claims are headline percentages with no stated basis, or customer logos standing in for results.
Vendor Published

One testimonial appears on the pricing page and its attribution is better than almost anything graded in this session: a named individual, a stated job title, a named employer and a quantified claim of more than 100,000 dollars in revenue from a single campaign. A reader can look that person up.

What keeps the row at the middle band is that it is one data point with no measurement basis, no time period and no method, standing alone where a vendor nine years into its market would be expected to have case studies. Independent directory ratings are strong and are reported by third parties rather than displayed with a linked source in the material read.

Compliance and Risk
Outreach Compliance PostureOutreach Compliance PostureHow the product handles regulated outreach: consent, DNC scrubbing, opt out mechanics, caller ID conduct, and the public enforcement record.
BB on Outreach Compliance PostureSubstantive compliance features documented in product, but material questions (litigation history, caller ID practices, where responsibility transfers to the customer) go unaddressed.
Vendor Published

Three named statutes appear in the terms, the European regulation, the California act and the Virginia act, and the terms then allocate responsibility with a specificity most peers avoid. The customer bears sole responsibility for the accuracy, quality and legality of the personal information it loads, for the means by which that information was acquired, for ensuring the contractual terms required by applicable privacy law exist, and for ensuring any required consent of a data subject has been obtained and any necessary disclosures made.

Naming consent as a requirement and assigning it is a compliance position, not a disclaimer. A recipient facing deletion route exists and works two ways: an individual can email to have their data removed, and a customer can raise the same request on behalf of one of their own recipients. Off the top band because the posture is allocative rather than enforced.

The vendor requires the customer to warrant lawful use where the highest graded vendors in this index make lawful use a condition they police, and no unsubscribe mechanism, suppression policy, acceptable use policy or complaint threshold was located.

Data Privacy PostureData Privacy PostureGDPR and CCPA posture: lawful basis, data subject rights handling, DPA availability, subprocessor disclosure.
BB on Data Privacy PostureA real privacy program is visible (DPA available, policy substantive) with a gap on the hard question, commonly lawful basis for enriched or tracked individuals.
Vendor Published

The privacy policy is specific in places most are vague, and two disclosures in it are candid enough to be worth a buyer's attention. The first is a plain statement that in rare cases engineers may use an internal tool to locate emails belonging to a customer's campaigns in order to resolve a support request, fix a defect or investigate a security concern, done so as to view the least information possible. Very few vendors admit that human access to customer email content exists at all.

The second is a disclosed product limitation stated inside the privacy policy rather than buried, that warming is not provided for accounts on the largest mailbox platform. Around those sit adherence to the limited use requirements of that platform's data policy, a documented deletion route reachable by email, and encryption stated for data at rest and in transit.

Off the top band because no sub processor list was located, no pre signed data processing addendum was found, no supervisory authority or protection officer route is published, and the terms place essentially the entire data protection burden on the customer.

Data Licensing and ProvenanceData Licensing and ProvenanceWhere the data comes from and on what legal footing: licensed, contributed, public record, or scraped, and who stands behind the answer.
CC on Data Licensing and ProvenanceData is described by its size and coverage with its origin unstated. The provenance question is answerable only by asking the vendor.
Vendor Published

Two data flows exist and only one is explained. Contacts the buyer uploads are their own and the terms are explicit that the buyer owns the question of how they were acquired. The contact finding module is the unexplained one: it is sold as a separate subscription at four published credit tiers, searches by job title, company, industry and location, and returns names and email addresses, and no supplier, database, coverage figure, refresh cadence, matching method or licence appears anywhere read. A buyer paying 249 dollars a month for 12,500 records has no published basis for knowing where any of them came from.

Platform Terms ExposurePlatform Terms ExposureWhether the product operates inside the terms of the platforms it touches, and the restriction risk a buyer inherits when it does not.
CC on Platform Terms ExposureThe vendor is silent on method while the product’s function implies platform automation. Restriction risk is real and unpriced.
Vendor Published

The email side carries little exposure by design, since sending runs through a mailbox the buyer already owns on the major providers, with no relay, proxy or rented identity in the path. Two things keep this at the middle band rather than higher. Social automation ships on the top tier with no conformance position stated regarding the platform it automates, which is the same silence graded repeatedly across this alphabetical block.

And address rotation is described on the pricing page as improving deliverability and allowing a higher number of emails to be sent daily, which is the second half of that sentence doing something different from the first: the index has consistently held that multiplication framed as a way past a limit is not the same as sending discipline.

AI Safety and Data StewardshipAI Safety and Data StewardshipThe cross client boundary: whether customer data trains models that serve competitors, plus retention and deletion posture.
CC on AI Safety and Data StewardshipSecurity language exists but the training question, the one this axis turns on, is unanswered: a buyer cannot tell whether their pipeline data improves a competitor’s instance.
Vendor Published

A training statement exists and is precisely limited, which is the pattern this index has now recorded three times: the vendor states it does not use data acquired from the largest mailbox platform's interfaces to develop, improve or train generalised models. Read carefully, that commitment covers one source of data and one class of model.

It leaves untouched campaign content, uploaded prospect records, replies, and mailbox data from every other provider, and it says nothing about models that are not generalised. The narrower scope is why this sits a band below the vendors whose equivalent statement covers customer data as a whole. A plain sentence about customer data generally would move it.

Recipient Disclosure and AuthenticityRecipient Disclosure and AuthenticityHow the product presents itself to the people it targets: whether automated outreach and AI agents disclose themselves, whether sender personas are real, and whether personalization is grounded in verifiable fact. Measured as known compliance with Article 50 of the EU AI Act, in force since August 2, 2026, which requires AI systems that interact with individuals to disclose that fact.
CC on Recipient Disclosure and AuthenticityNothing published on whether recipients are told they are dealing with software. For a product whose AI talks to prospects, silence here is now a regulatory posture, not a style choice.
Vendor Published

Messages leave under the buyer's own name from the buyer's own mailbox, nothing manufactures a persona and no account belongs to somebody else, so the authenticity failures graded repeatedly earlier in this session do not arise. The recipient also has a real route: an individual can email to have their data deleted, and their sender can raise it for them. What is missing is any position on artificial authorship.

Copy is generated and tested by a branded assistant and sent as the buyer's own writing, and the European obligation to disclose that a message is machine generated goes unaddressed on every surface read.

Integration and Deployment
Ecosystem and Integration DepthEcosystem and Integration DepthDocumented depth of CRM and stack integration: objects, sync direction, API surface, marketplace presence that matches the claims.
BB on Ecosystem and Integration DepthSolid primary CRM integration documented, with depth unstated at the edges (sync direction, custom objects, failure behavior).
Vendor Published

Integration depth is the capability independent reviewers most consistently single out, and the published surface supports them: native connections to three named customer relationship platforms with two way synchronisation described by outside reviewers as handling custom objects and account matching where newer competitors break, more than a thousand further destinations through a general automation connector, a browser extension, an interface key documented in the help centre, and a substantial documentation site.

Off the top band on two counts. No public developer documentation or endpoint reference was located, only an article describing where to find a key. And the browser extension for the contact finding module is marked as coming soon in all four of its tiers, including the 249 dollar one, so a feature is listed as included at every price point without yet existing.

Deployment Model and Data ResidencyDeployment Model and Data ResidencyWhere the product runs and where customer data lives, including residency options for EU buyers.
CC on Deployment Model and Data ResidencyCloud hosted is the whole public answer. Region and residency questions require a sales conversation.
Vendor Published

The privacy policy gives an unusually clear view of the architecture without giving a location: a private cloud network with restricted entry points, enforced multi factor authentication on the infrastructure identity accounts, and a named payment processor holding card data so the vendor stores only the last four digits. Every one of those describes how rather than where.

Processing region, storage location, transfer mechanism and any customer choice of residency are all unstated, which for a vendor naming the European regulation in its own terms is the gap most likely to matter to a buyer with European recipients.

Security Certifications and Trust CenterSecurity Certifications and Trust CenterVerifiable security posture: enumerated current certifications and a trust center an outsider can actually read.
BB on Security Certifications and Trust CenterCertifications named and plausible with a gap: no trust center, stale dates, or asserted without enumeration.
Vendor Published

A documented control set exists and is specific rather than asserted as a category: restricted access to the private cloud network limited to what serving the product requires, full time staff access limited by role and function, contractors given minimal temporary production access only when needed, multi factor authentication enforced both on infrastructure identity accounts and across company mailboxes, encryption stated at rest and in transit, and card data held by a named processor rather than by the vendor.

A help centre article gathers the privacy policy, a security policy and an information security policy in one place, so the documents are findable rather than scattered. Off the top band on the thing procurement actually asks for: no certification, audit report, penetration test summary or trust centre was located, so every one of these controls is the vendor's own description of itself with no third party attestation behind it.

Commercial and Operational
Commercial TransparencyCommercial TransparencyWhether a buyer can budget without a sales call. Published pricing graded on completeness, not on the price itself.
CC on Commercial TransparencyA pricing page exists and communicates structure without numbers, or numbers so qualified they do not budget anything.
Third Party Estimated

Prices are published, which keeps this out of the bottom band, and a buyer still cannot reconcile them. The vendor's own pricing page as retrieved shows the entry tier as free with one email address, while its own answers immediately below state that no free trial exists and that payment is collected up front, and every independent review places that same tier at 29 dollars a month.

Mailbox allowances are reported as one, two and five per user on the vendor's page and in its help centre, as two and ten by a capture of the same page three months earlier, and as five doubling to ten by one reviewer describing a 2026 change. Billing cadence is described by different reviewers as monthly by default with no annual discount, as annual only with no monthly option, and as annual with roughly a quarter off. Two structural points hold regardless of which figures are current.

Per minute rates for the dialer bundled into the top tier are not published anywhere, which is a load bearing usage cost on the plan that exists to include it. And the contact finding module is a separate subscription on top of the seat price. The one part of this that is exemplary is that module's own card, which publishes four tiers with monthly credit volumes and the effective cost per credit at each, from five cents down to two.

Exit and Data PortabilityExit and Data PortabilityWhat happens when a customer leaves: completeness of data export, rights to enriched or licensed data after termination, deletion commitments, and auto renewal mechanics, graded from published terms and documentation.
CC on Exit and Data PortabilityExport exists as a feature claim while the terms that govern exit, data rights after termination, deletion, and auto renewal mechanics, are not published anywhere a buyer can read.
Vendor Published

The account lifecycle is documented in the help centre rather than left to inference, with published articles covering cancellation, the refund position, account deletion and mid cycle subscription changes, which are prorated to a charge or a credit. Deletion of an individual's data on request is committed to in writing. Cancellation works by ending before the renewal date.

What is absent is the portability half of the axis: no export function, file format, download path or scope is described anywhere read, and no post termination right over campaign history, prospect lists or reply data is stated. The practical exit route appears to be the customer relationship synchronisation, which means the buyers best placed to leave cleanly are the ones who connected a system of record on the way in.

Deliverability and Sending DisciplineDeliverability and Sending DisciplineThe operational craft of sending: warmup, rotation, volume governance, spam rate monitoring, and what happens when reputation degrades.
BB on Deliverability and Sending DisciplineReal deliverability features documented, with the operating discipline (limits, monitoring, intervention) asserted rather than specified.
Vendor Published

The guidance layer is genuinely strong and specific in a way marketing copy rarely is. The help centre publishes step by step authentication setup articles for both major mailbox providers covering sender policy, key signing and the reporting policy on top of them, a standalone article on the reporting policy alone, and a separate article on sending cadence and copywriting practices for deliverability.

Alongside that sit scheduling and throttling controls, list cleaning, verification, warming, a domain setup assistant that walks a non technical buyer through configuration, and deliverability training offered as part of onboarding rather than sold. Three things hold it below the top band and a buyer should weigh all of them. The vendor discloses in its own privacy policy that warming is not provided for accounts on the largest mailbox platform, which is where most customers send from.

Address rotation is described partly as a way to send a higher number of emails daily. And an independent external scanning service reports that the vendor's own sending domain runs a permissive reporting policy and a lenient sender policy, which is the configuration its own help articles instruct customers to tighten. No complaint rate threshold and no published daily sending ceiling were located.

Segment and Market CoverageSegment and Market CoverageWho the product actually serves, evidenced: segments, geographies, languages, and customers that match the claim.
BB on Segment and Market CoverageSegment focus is clear and evidenced with a gap in geographic or language specifics.
Vendor Published

The ladder is legible and each rung names its buyer, from an entry tier for individuals through a mid tier for teams scaling an email programme to a top tier for multichannel programmes, with mailbox allowances, channels and included credits all stepping up together, and a custom agency arrangement above that.

The agency case is documented concretely rather than gestured at: the vendor advises that the client should create their own team and be the billed party, with the agency added as a user across as many teams as it needs, which is a real operating model with a real billing consequence. Off the top band because region coverage, size bands and industry fit are all unstated, and because the structural boundary that independent reviewers uniformly identify goes unmentioned by the vendor.

Seats are billed per user with mailboxes capped per user, so an operator running many mailboxes behind one person pays for seats they do not staff, and that is the point at which this product stops fitting.

Commercial

Pricing

What this vendor charges, what it commits to in writing, and where the bill can move. Figures the vendor publishes itself are labeled Vendor Published. Figures labeled Estimated come from other sources and the vendor has not confirmed them.

What it costs
Vendor Published
$45 per user monthly on Email Outreach billed annually
with mailboxes bought by buying extra seats
$45 lowest published figure
In short
  • ›Email Outreach is $45 per user a month paid yearly, and the top plan is $85. Which is confusing because the page also showed a free entry plan to one of my checks and a paid one everywhere else.
  • ›The thing that really decides your bill is mailboxes. You get one connected mail account per user you pay for, and the company openly tells you to buy extra users you do not employ if you want more mailboxes. So price this by mailbox, not by person.
  • ›There is no free trial at all. The company says plainly that it takes payment up front. For a cold email tool, where results depend on your own domains, that means paying before you can find out if it works.
  • ›The contact database is sold separately and priced really well: $49, $99 or $249 a month for 1,000, 2,500 or 12,500 lookups, and it prints the cost per lookup next to each one, down from 5 cents to 2 cents.
  • ›Check the mailbox count in writing before you buy. The page gave me two different numbers for the top plan, five and ten, minutes apart.

How the price works

What you are charged for, and what makes the bill go up.

Per user subscription where the user is effectively a mailbox slot, with a separately sold contact database alongside it. The vendor states that each paid user permits one connected mail account, and explicitly notes that a team may purchase more users than it employs in order to connect more mail accounts.

Retrieved tiers, all quoted on annual billing:

  • ›an entry tier carrying one email address
  • ›Email Outreach at $45 per user monthly against a $49 monthly rate, carrying two email addresses
  • ›and Sales Engagement at $85 per user monthly against a $99 monthly rate, flagged as most popular.

The mailbox allowance on the upper tier was returned as five in one retrieval and ten in another of the same page, and independent reporting states it was doubled from five to ten during 2026. An agency tier with unlimited email addresses appears in one retrieval without a published figure.

The entry tier rendered as free in one retrieval while independent sources consistently report it at $25 per user monthly on annual billing or $29 monthly. That conflict is unresolved.

Supported mail accounts are stated broadly: the major consumer and business providers plus any address supporting standard send and retrieve protocols.

The contact database is a separate subscription with its own four tiers, each publishing both the monthly credit allowance and the effective unit rate:

  • ›a free tier at fifty credits one time stated at $0.00 per credit
  • ›Starter at $49 monthly for 1,000 credits at $0.05 per credit
  • ›Pro at $99 monthly for 2,500 credits at $0.04 per credit
  • ›and Enterprise at $249 monthly for 12,500 credits at $0.02 per credit, all on annual billing.

Billing is yearly. Mid cycle subscription changes are prorated in both directions. Cancellation before the renewal date prevents further charges other than outstanding prorated amounts. There is no free trial and payment is collected up front.

What the contract says about your data

What the vendor commits to in writing once your data is in the product.

Not established, and this record should not be read as saying anything about it either way. Two passes across the pricing page and its navigation located no security page, no trust surface, no processing agreement, no sub processor list, no certification claim and no privacy or terms document reachable from the routes tried. Nothing in the retrieved material addresses retention, deletion, residency, encryption, transfer mechanisms or subprocessing.

That is a retrieval limitation rather than a finding. The pricing page served inconsistent versions of itself during this research, so a navigation footer carrying legal links may simply not have been in the variant returned. A vendor of this age and size almost certainly publishes these documents somewhere, and the correct conclusion is that they were not reached from the pricing page rather than that they do not exist. This is the item most worth rechecking on this record.

What can be said about custody comes from the product shape rather than from any disclosure. A configured account holds authenticated access to mail accounts across the major providers and any address supporting standard mail protocols, and on the upper tier holds dialler activity and vendor supplied phone numbers. The separately sold contact database means the platform also holds records about people who never contacted the buyer, which is a different obligation from holding a customer's own list. A buyer whose procurement requires processing terms in place before signature will need to request them, and should factor in that the vendor takes payment before providing any way to evaluate the product.

Getting started

What it costs and what is included before the product is running.

No setup fee, and no way to try the product either. The vendor states directly that there is no free trial and that payment is collected up front, offering concierge onboarding, deliverability training and support resources in its place. Independent reporting describes a thirty day guarantee standing in for a trial, which was not confirmed on any vendor surface reached here.

Billing mechanics are published and unambiguous. Charging is per user purchased rather than per person employed. Plans are billed yearly. A subscription change mid cycle is prorated in both directions, producing either a pending charge or a credit. Cancellation takes effect for future renewals provided it precedes the renewal date, with outstanding prorated amounts still payable.

The structural point that governs cost is the mailbox to seat ratio, and the vendor explains it rather than hiding it: each paid user permits one connected mail account, and a team wanting more sending capacity is told it may simply buy additional users it does not staff. So for any multi mailbox operation the effective price is the seat rate multiplied by the number of mailboxes, not by the number of sellers.

The contact database is a separate subscription with its own four tier ladder, published at $49, $99 and $249 monthly on annual billing for 1,000, 2,500 and 12,500 credits, plus a free tier of fifty credits. Each tier states its effective rate per credit. Independent reporting adds a smaller top up option near $19 monthly and ready to use mailboxes at around $12 monthly each, neither confirmed on a vendor surface here.

Dialling is bundled on the upper tier with vendor supplied numbers and unlimited North American minutes according to independent reporting, with international calling charged extra and no per minute rate published anywhere.

What to watch for

Where this pricing can surprise a buyer who has not read it closely.

The same page served two different versions of itself to two fetchers in the same session, and I cannot tell which is current.

One retrieval returned a free entry tier with a single mail account and an upper tier carrying five mail accounts. Another retrieval of the identical address, minutes apart, returned text describing unlimited sends, an agency plan, unlimited email addresses and a ten account figure. A search index snapshot of the same page also shows ten. Independent analysis published in 2026 states that the mailbox allowance on that tier was doubled from five to ten during the year, which fits the ten figure being current and the five figure being a cached variant. It is recorded here as unresolved rather than as a finding, because the alternative reading is that the higher figure is the stale one, and nothing retrieved settles it. A buyer should confirm the mailbox count in writing before purchase; it is the number that governs whether this product works at all for scaled sending.

The entry tier is subject to the same problem. It rendered as free in one retrieval while every independent source reports it at $25 annually or $29 monthly. Either the tier was recently made free and the market has not caught up, or a stale variant was served. The numeric field therefore carries $45, the lowest rate confirmable on a vendor surface, rather than either candidate for the entry tier.

Setting the caching aside, two disclosures here are excellent and one term is unusually adverse.

The contact database is the best credit disclosure encountered in this tranche. Four tiers each publish the monthly allowance and the effective rate per credit alongside it: $0.05, $0.04 and $0.02 as volume rises, with a free tier at fifty credits stated at zero. Publishing the unit rate next to the allowance lets a buyer compare against any other data provider directly, and it makes the volume discount visible rather than something to be inferred. Almost nobody in this index does this.

The seat and mailbox mechanic is the other. The vendor states in plain terms that each paid user permits one connected mail account, and then says outright that a team may buy three users while employing one person purely to connect three mail accounts. That is the vendor explaining how to work around its own per seat model, published in its own frequently asked questions. It is candid, it is useful, and it also means the real unit of purchase is the mailbox rather than the person, which changes the comparison against every flat rate competitor in this category.

The adverse term is the absence of any way to try the product. The vendor states plainly that there is no free trial and that payment is collected up front, offering onboarding and deliverability training in its place. For a cold email platform, where deliverability outcomes depend on the buyer's own domains and cannot be predicted from a demonstration, requiring payment before any evaluation is a material commercial term and the vendor does not soften it.

Billing mechanics are published and clear: plans are billed yearly, mid cycle subscription changes are prorated in either direction, and cancellation before the renewal date prevents further charges except for outstanding prorated amounts. Agency handling is set out explicitly, with the recommendation that the client owns the team and the agency joins as a user, so the agency is not the billed party.

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