Warmup settings reference
Every per-mailbox warmup setting: what it does, its default, and when to change it.
Each connected mailbox has its own warmup settings, set during onboarding and editable anytime from the mailbox's settings page. Changes take effect on the next scheduling cycle.
| Setting | Default | What it controls |
|---|---|---|
| Sender name | Derived from address | From name on warmup mail |
| Daily target volume | 20–40/day | Sends per day after the ramp completes |
| Reply rate target | 35% | Share of your warmup mail that gets replies |
| Working hours | 8:00–18:00 | Window in which sends are scheduled |
| Working days | Mon–Fri | Days on which warmup sends at all |
| Timezone | Your timezone | Which clock the working hours follow |
| Industry tags | None | Topics warmup conversations lean toward |
| Warmup toggle | On after setup | Pause and resume warmup |
Sender name
The From name shown on warmup mail. If you left it blank at setup, one is derived from your email address. Set it to the real name recipients of your actual campaigns will see — warmup mail that matches your real sending identity builds reputation for that identity.
Daily target volume
The number of warmup emails per day your mailbox works up to. Warmup never starts here — volume follows the ramp schedule (5/day at first, target by day 30). Plan caps apply: Free 20/day, Starter 100/day, Pro 200/day (see pricing).
Guidance: match your target to your real sending plans. A mailbox that will send 50 cold emails a day is well served by a 40-ish warmup target; pushing a brand-new domain to 200 buys little and looks less natural.
Reply rate target
The percentage of your warmup sends that receive replies from the network. Default 35%, which mimics healthy human correspondence. Higher reply rates mean stronger engagement signals; unrealistically high rates (near 100%) don't match how real inboxes behave. The default is right for almost everyone — nudge it up moderately if you're recovering a damaged reputation.
Working hours
The daily window in which sends are scheduled, default 8:00–18:00. The scheduler spreads sends across the window with natural jitter — nothing fires outside it. Set this to when a human at this mailbox would plausibly be emailing. Narrower windows concentrate the same volume into fewer hours.
Working days
Which days warmup sends, default Monday–Friday. Non-working days are skipped entirely. You can enable all 7 days — reasonable for a mailbox that genuinely sends on weekends, but a B2B mailbox that goes quiet on weekends looks perfectly normal.
Timezone
Which clock your working hours follow. Set it to the timezone of the person the mailbox represents, not where your servers are. If your sends seem to happen at odd hours, check this setting first.
Industry tags
Optional tags that steer the topics of AI-generated warmup conversations. Tag a mailbox "SaaS" and "recruiting" and its threads read like someone working in those fields. Set tags that match what the mailbox actually does — consistent, plausible content keeps warmup traffic indistinguishable from your real mail.
Pause and resume
The warmup toggle pauses all scheduled sends for the mailbox without disconnecting it or deleting anything. Resume picks scheduling back up.
Pause rather than remove when you need a break — a paused mailbox keeps its credentials and configuration and restarts cleanly. Reputation decays with prolonged silence, though, so avoid pausing for weeks at a time.
Remove mailbox
Removing a mailbox is permanent: you type the address to confirm, and stored credentials are deleted. Warmup stops immediately. To warm that mailbox again later, you reconnect it from scratch via the quickstart.
Remove deletes credentials and cannot be undone. If there's any chance you'll warm this mailbox again, pause it instead.