How fast do campaigns send?

Mail goes out gradually, never in a burst.

The numbers

Each mailbox sends about 15 emails per day, spread across the working day. Your daily ceiling is roughly:

(number of mailboxes) × 15

Monthly allowances assume about 22 sending days a month.

Why so conservative?

High per-inbox volume is one of the strongest spam signals there is. Mailbox providers watch sending patterns closely, and a domain that suddenly pushes hundreds of cold emails a day gets filtered fast.

Burst sending from a cold domain is the single most reliable way to end up in spam folders — at which point your campaign appears to send perfectly and produces nothing.

Getting more volume

More volume comes from more mailboxes, not from pushing each one harder. That is what the higher plans provide.

Note that newly provisioned mailboxes need warm-up before they carry full volume, so an upgrade does not produce full extra throughput the same hour.

Scheduling

Sending days and time zone are configurable per campaign, so you can keep sends inside business hours in your recipients' region.

Updated on: 17/08/2026