What’s the role of ongoing warmup practices even for stable domains?

Warmup principles for stable senders:

Volume changes:

Increase gradually, never suddenly

Warm into seasonal volume spikes

Plan for holiday ramp-ups

New segments:

Test new audiences carefully

Start small with unknowns

Monitor before scaling

New content types:

Introduce gradually

Watch engagement closely

Adjust based on response

Infrastructure changes:

New IPs need warmup

New domains need warmup

Migration requires planning

Warmup principles apply whenever introducing something new.

Even experienced ships approach new ports carefully.