Glossary definition

Inbox warmup

Inbox warmup is a cautious ramp period where a mailbox builds operating history before it is treated as ready for normal prospect traffic.

How GTM Inboxes uses this term

GTM readiness can include warming inboxes when other required signals are present, but export and launch behavior still follows readiness and seed-placement gates.

Warmup is not launch approval

Warmup can be part of a cautious operating model, but GTM does not frame it as ban immunity, inbox-placement proof, or a substitute for launch gates.

What to pair it with

Pair warmup with DNS checks, SMTP and IMAP smoke tests, readiness reports, seed-placement evidence, and conservative capacity planning.

Related glossary terms

SMTP readiness

SMTP readiness is the operational check that an inbox can authenticate and submit mail through the managed SMTP path without exposing its password.

Seed placement

Seed placement is pre-launch evidence from controlled mailbox tests that shows inbox, spam, or missing counts by provider.

Cold email launch gate

A cold email launch gate is the approval checkpoint that blocks prospect traffic until required readiness and seed-placement evidence is fresh and passing.

Related workflows

Calculate inbox capacity

Plan mailbox volume before provisioning or warmup decisions.

Check a real domain

Move from the definition to a practical DNS and authentication check.

Seed placement workflow

How the concept shows up in the pre-launch evidence workflow.

Browse the glossary

Every cold email infrastructure term GTM models, checks, or gates.

Next step

Model inbox, domain, and SMTP assumptions before launch work.

Plan SMTP capacity