Emails per day caps how many warmup emails a mailbox sends daily (1 to 20, default 20). Ramp-up (on by default) grows volume gradually to that cap, at a speed of Slow, Normal (default) or Fast. Change them per mailbox from the "..." menu → Edit Settings on the Warming page, or for many mailboxes at once with Set Volume and Set Ramp-up after selecting rows. The reply rate is fixed and managed by Winnr. The defaults suit most setups; slow things down only for brand-new domains.
Emails per day
The maximum number of warmup emails a mailbox sends per day. Range 1 to 20, default 20 (also the maximum).
- 20 a day: the default and the ceiling. Enough signal to build reputation on most mailboxes.
- 5 to 10 a day: for a brand-new domain you want to treat gently, or an aged mailbox you just want to keep lightly active.
Remember that warming counts toward a mailbox's total daily sending. Keep cold plus warming at 50 a day or less per mailbox.
Ramp-up and ramp speed
With Ramp-up on (the default), a mailbox starts at a low volume and grows to its daily cap. The speed decides how quickly:
- Slow: the most gradual. Best for brand-new domains.
- Normal: the default. Works for most setups.
- Fast: the quickest. For aged domains with an established sending history.
With ramp-up off, the mailbox works at its daily cap without a gradual climb. Only do this for mailboxes that already have a clean sending history. The Mailboxes table shows the current choice in the Ramp-up column (Slow, Normal, Fast or Off).
Ramp speed matters more than the final volume for a new domain. A fast ramp on a fresh domain can trigger filters early, even with a modest cap.
Where to change settings
- One mailbox: Warming page → Mailboxes table → "..." on the row → Edit Settings. Adjust Emails per day, the Ramp-up switch and Ramp-up speed, then Save Settings.
- Many mailboxes: tick rows in the Mailboxes table, or domains in the Domains table, then click Set Volume or Set Ramp-up.
- When enabling: the Enable Warmup and Import External dialogs set volume and ramp speed for everything you're adding.
- Winnr Agent or API: the same settings can be applied through the in-app assistant or the API.
What Winnr handles for you
Replies and engagement inside the warming network are managed automatically. The reply rate is fixed at 30% and isn't something you set.
When to change from the defaults
Lower volume and/or use a Slow ramp if: - The domain is brand new (under about 30 days). - The mailbox has had bounce or throttling problems before.
Use a Fast ramp if: - The domain is aged with a clean sending history. - You accept a bit more risk to be ready sooner.
Leave the defaults if: - You're new to cold email. - Warming is already running fine.
What's next
Frequently asked questions
Should I max out volume immediately?
The default is already the maximum (20 a day), and ramp-up gets there gradually on purpose. Leave ramp-up on, with Normal speed or Slow for a brand-new domain. The volume setting is a ceiling, not a day-one target.
Do I set the reply rate?
No. The reply rate is fixed at 30% and managed by Winnr. You control volume and ramp-up only.
Can I change settings mid-warmup?
Yes, any time. Changes are saved straight away and apply to upcoming warmup sends. Raising volume mid-warmup is fine if the mailbox is running clean; lowering it just slows progress without harm.
How do I change settings for a lot of mailboxes?
On the Warming page, tick mailboxes in the Mailboxes table (or whole domains in the Domains table) and use Set Volume or Set Ramp-up in the bar that appears. Each applies to every selected mailbox.
Can I give different mailboxes different settings?
Yes. Settings are per mailbox. Some customers keep a few high-value mailboxes on a Slow ramp and lower volume, and let the rest run on Normal at full volume.