Blog · topic

warmup

3 posts

All 11 deliverability 10 sending 4 warmup 3 policy 2 open-source 1
3 posts
warmupdeliverability 8 min read

How email warmup actually works, ramp curve and all

Warmup ramps a mailbox from 10/day, +1/day, to a 40/day ceiling over a few weeks. Here is the real mechanism: pools, partner selection, tokens, and why we cap it.
warmupdeliverability 7 min read

Getting a burned mailbox back: a reputation recovery playbook

A step-by-step recovery ramp for a mailbox that has been quarantined or blacklisted: confirm listings, stop the bleeding, fix the root cause, re-warm at 5 to 10/day.
warmuppolicy 6 min read

Quarantine early: how we protect shared warmup pools

Most warmup tools pull a mailbox at 80% spam placement. Warmbly quarantines at 20%, on separate signals with sample floors, and re-entry you have to earn.

Send cold email people actually open.

Connect a mailbox, warm it up, send your first campaign today. Free to self-host, warmup included.

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