Email sending limits and the warm-up ramp
How many emails each mailbox and campaign can send, how the warm-up ramp works, and why Victoria has no separate warm-up service.
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Victoria AI limits how fast each mailbox sends, so a new mailbox builds a sending history before it sends at volume. Three limits apply, and the lowest one wins on any day.
Email limits per campaign and per mailbox
| Limit | Default |
|---|---|
| Emails per campaign, per day | 30 |
| Emails per mailbox, per week | 500 |
| Emails per mailbox, per day, while ramping | See the ramp below |
The per-campaign daily limit is a campaign setting; change it in Campaigns → your campaign → Settings → Daily Limits. See Work hours and daily limits. The weekly limit per mailbox is fixed. Days are counted in US Eastern time.
Email warm-up ramp for a new mailbox
For its first 14 days a new mailbox has a daily cap across all its campaigns:
| Ramp day, as the app shows it | Emails per day |
|---|---|
| Days 1 to 3 | 5 |
| Days 4 to 7 | 10 |
| Days 8 to 14 | 20 |
| After day 14 | The campaign's daily limit |
Day 1 is the day the mailbox connected. While it ramps, the row on Sender Accounts shows the day and today's cap, for example Day 2 of 14 · 5/day. Reconnecting a mailbox doesn't restart its ramp.
Skip the email ramp
Owners and admins can select the chip on the mailbox's row, then Skip ramp under Sending limits. The mailbox moves straight to the campaign's daily limit. New and recently reconnected mailboxes that send at full volume immediately are far more likely to be rate-limited by the mailbox provider. The skip is recorded with your name and can't be undone.
Why Victoria AI has no mailbox warm-up service
Victoria AI doesn't run a warm-up network that sends and replies between mailboxes. The protection is the ramp and the caps above, plus checks on your domain:
- SPF, DKIM and DMARC are checked when a mailbox connects and every day after. A failing domain blocks campaign activation. See DNS setup.
- Every message is written for one person rather than sent as a blast.
For a new mailbox, use a third-party warm-up service as well, on a dedicated sending domain rather than your everyday mailbox. See Sending mailbox best practices.
Campaign sends fewer emails than the limit
A campaign can send less than its daily limit when:
- The mailbox is still ramping. Check the day count on Sender Accounts.
- The mailbox reached its weekly limit.
- The campaign is outside its work hours.
- Few leads are due an email step today.
See Leads not moving for the full list.