Deliverability
Sending limits per mailbox
Default cold-email caps: 40 per day on plan mailboxes, 15 per day on pre-warmed leases, and why more volume means more inboxes not a higher cap.
The caps
| Mailbox kind | Cold emails / day |
|---|---|
| Plan / hosted overage | 40 at the default ceiling |
| Pre-warmed lease | 15 |
Starter's 50 mailboxes at 40/day is 2,000 sends. Growth and Scale scale that default with mailbox count (8,000 and 24,000 at the same 40/mailbox).
Warming traffic is separate.
Why not 200/day on a "warm" inbox
Receivers cluster senders that suddenly look like a list. The pre-warmed product is priced and capped so the measurement you bought survives the first week of real copy.
Need more volume: claim or provision more mailboxes.
FAQs
Can I raise the 40?
Account-level send policy is a plan constraint, not a slider per mailbox for "just this campaign." If you are hitting it, you are at the size of the next plan or the next inbox.
Do bounces count?
A bounce is a send that failed. It still happened. Verification exists so fewer of them happen.