InstaOutreach version 0.10.15 adds a maximum DMs per day setting for each Instagram account, where 0 pauses sending, and a ramp that starts new sending accounts at 2 DMs on the first day and adds 2 a day until the chosen maximum. It replaces an earlier warm up that held new accounts back for 7 days and started DMs at 3 on day 8.
Gradual ramps and per account caps are the main defense against Instagram restricting automated accounts, so buyers get more control over that risk.