HeyReach released workspace blacklists that hold up to 1,000 people and 1,000 companies, with CSV import and additions through the API and MCP of up to 100 entries per request. New campaigns turn on both exclusion checks by default, and an excluded lead never enters the sequence.
A reusable suppression list is basic outreach hygiene that LinkedIn tools have been slow to offer. Note the limits: lists belong to one workspace, are capped at 1,000, and a user can switch the exclusions off for a campaign.