Deliverability
Understand the limits, pacing, and safety stops that protect your sending mailboxes.
1 min read
ColdMerge sends through mailboxes you own. A sudden burst, a dirty list, or a misconfigured domain can therefore affect the same account you use for everyday email.
ColdMerge reduces that risk in three ways:
- new and quiet mailboxes start with a low send budget;
- messages are spaced inside a sending window;
- a campaign pauses when sending failures or bounces show a serious problem.
Understand a limit or pause
Section titled “Understand a limit or pause”- Why does my new mailbox start with a low send budget?
- Why do my emails trickle out?
- Why did my campaign pause itself?
- How does ColdMerge send my mail?
For exact mailbox limits, see How much can each mailbox send?. For DNS setup, see Mailboxes & sending domains.