A new email address has no sending history, and email providers use that history to decide between the inbox and the spam folder. Warm-Up builds the history gradually so your first campaign lands where it should.
How it works
You connect a mailbox and choose a pace. Warm-Up then sends real emails on your behalf, receives real replies, and rescues messages that land in spam by moving them back to the inbox and marking them important. Volume increases daily, and the mailbox is cleared for full campaign sending when the numbers support it rather than after a fixed number of days. Four modes are available: slow for brand new or recovering domains, medium as the default, fast for an established domain adding an address, and AI, which sets the pace from live performance. Warm-Up and campaign volume are tracked together against one safe ceiling, so both can run at the same time.
Key capabilities
- Four pacing modes, including an AI mode that adapts to real mailbox performance.
- Real sends, real replies, and spam rescue rather than simulated counters.
- Combined volume ceiling so warm-up and live campaigns can run concurrently.
- Recovery path for mailboxes damaged by a blacklisting or a bad campaign.
- Daily timeline of volume, engagement rate, spam recovery, and reputation trend.
- Readiness judged from the data, not from a fixed calendar.
Tips
Most new mailboxes need two to three weeks. Start warm-up before you finish building the campaign, so the mailbox is ready when the copy is.