Seguno Email Marketing automatically recommends rewarming a domain that returns to sending after a long break, breaking up your send into multiple batches that increase over time, effectively ramping up the volume, instead of delivering to the full list at once.
This protects the domain's sending reputation, which fades with inbox providers during extended inactivity.
Why a break in sending puts deliverability at risk
Inbox providers use recent sending activity to judge whether a domain is trustworthy, which includes consistent sending volume.
A break in sending leaves them without that recent signal, so a sudden return to full volume looks similar to spam or compromised-account behavior and risks being filtered or blocked.
How rewarming protects and rebuilds your deliverability health
By gradually easing volume back up, rewarming gives inbox providers a chance to observe good sending behavior again before trusting the domain at full volume.
This protects the domain's deliverability health in the moment and rebuilds it over the course of the send, rather than risking a spike that could further set the domain's reputation back.
Note:
Rewarming is automated, follows a specific cadence recommended by inbox providers, and cannot be sped up.
FAQ
Why does my domain need to be rewarmed after a break in sending?
The domain's reputation with inbox providers fades during the break, so Seguno rewarms it to rebuild that trust before returning to full volume.
Does rewarming help deliverability problems, or just prevent new ones?
Both. It protects the domain from a spike-related deliverability hit and starts to rebuild sender trust that faded during the break.