Deliverability & mailbox health
Email warmup
New mailboxes can exchange real engagement with other Sendqube senders and ramp their daily send volume gradually, instead of jumping straight to full-volume outreach on day one.
How it works
New mailboxes exchange real send, open, and reply engagement with other warmup-enabled mailboxes on Sendqube in the background, building a positive sending reputation before they're used for real outreach at full volume.
The process in Sendqube
- 1Enable Email Warmup on a mailbox in Mailboxes.
- 2Set a daily warmup target — the cron sends and replies to warmup content between participating mailboxes automatically.
- 3Watch the Landed in Inbox percentage climb as the mailbox builds reputation, then increase your real sequence's daily limit.
This is live in the product today — not a roadmap item.
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