Deliverability
Sending limits per mailbox
Cold email is recommended at 15 per day per inbox, with a hard cap of 100 per day, and why more volume means more inboxes not a higher cap. Warming traffic does not count.
The caps
| Mailbox kind | Cold emails / day | When it applies |
|---|---|---|
| Any inbox, recommended default | 15 | From the first send |
| Any inbox, hard cap | 100 | The most one address will ever send in a day |
| Pre-warmed lease, recommended | 15 | From the moment you claim. Same 100 ceiling as any inbox |
Starter's 50 mailboxes at 15/day is 750 sends. Growth (200 mailboxes) is 3,000 at the same default. Scale (600) is 9,000. That is mailbox count × volume per inbox, not a pool you can dump through one address.
Warming traffic is separate. The ramp, which tops out at 20 messages a day, does not eat your cold sends. The recommended setup is 15 cold emails a day per mailbox with warming on, and 5 inboxes per domain, so one domain carries about 75 cold emails a day. Do warmup emails count toward sending limits?.
Need more volume: claim or provision more mailboxes, spread across more domains (5 inboxes per domain). How many mailboxes per domain?.
Why not 200/day on a "warm" inbox
Receivers cluster senders that suddenly look like a list. A mailbox that inboxed during warming can still look like a new bulk sender the week you paste it into Instantly and jump to 50 or 100.
The pre-warmed product is priced and recommended at 15 so the measurement you bought survives the first week of real copy. Smartlead-style pages that hint at ramping 20–30 then +5/day are describing a fresh warmup, not EmailPal's lease. On a lease the ramp already happened; the recommended volume is 15.
Every inbox defaults to 15 a day for the same reason: past that, placement falls away sharply and each extra message costs more in replies than it adds in volume. You can go up to 100 a day, but going higher is how complaint rates and Gmail's bulk-sender attention show up. Google and Yahoo sender requirements.
What counts as a send
A cold-email attempt against the cap is a campaign message you initiated. A bounce is still a send that failed — it still happened. Verification exists so fewer of them happen. List verification by EmailPal.
Replies you send from Unibox count toward the same cap as campaign emails. Engage measures the cap over a rolling 24 hours, so a busy reply day leaves less room for campaign sends. If you are unsure whether a path counts, assume campaign SMTP through another sequencer counts. Campaign sending limits and mailbox rotation.
FAQs
Can I go above 15 a day?
15 a day is the recommended default, and the hard cap is 100 a day per inbox. Nothing sends above 100, whatever a sequencer is set to. If you need more volume than a few dozen a day, add inboxes rather than raising one.
Can I raise the 15 on a pre-warmed lease?
Technically yes. A lease is held to the same 100 a day ceiling as any inbox, not to 15. But 15 is the volume the listing's inbox rate was measured for, and past it placement falls away, so the rate on the listing stops describing what you will get. Volume means more leases.
Do bounces count?
A bounce is a send that failed. It still happened. Verify first.
Does EmailPal throttle below the cap if placement drops?
Warming will hold or Slow-Ramp. Campaign SMTP you fire through Instantly is still your sequencer. If placement collapsed, stop the sequence. The cap is not a substitute for watching inbox rate.
Does EmailPal's own sequencer respect these caps?
Yes. Engage never sends above a mailbox's cap. No mailbox sends more than 100 cold emails a day, and your own per-mailbox limit can be lower. Campaign sending limits and mailbox rotation.
Instantly lets me set 200/day. Which number wins?
Both can fire. Instantly will happily queue 200, but EmailPal's infrastructure stops at 100 a day per inbox, and the providers on the other end still see that volume from one identity. Set the sequencer to the recommended 15 a day.