TrekMail Domain Warm-Up Rules by Plan

Every new TrekMail domain starts with a short sending warm-up. It applies to the rate-based sending limits for the domain, including when the account is on Nano, Starter, Pro, or Agency. The current category label refers to larger-volume plans, but the technical warm-up rule itself is not limited to those plans.

Warm-up does not judge whether your content is good or guarantee inbox placement. It gives a new domain a lower starting allowance while you establish normal, expected sending patterns.

The seven-day schedule

For example, a Starter domain with a 500-per-hour base SMTP limit starts at 200 per hour on days 1 to 3, then 350 per hour on days 4 to 7. While never-paid safety limits apply, for example during a trial, the percentages are taken of those lower limits instead, as explained below. The recipient-per-message maximum is not reduced by warm-up.

The percentage is calculated from when the domain was created, and each step begins at 00:00 UTC on day 4 and day 8. It is not a manual programme, it does not have an approval queue, and there is no dashboard control to skip it.

Warm-up lowers the limits of the new domain and its mailboxes only — in webmail, the API and mail apps alike. Your other domains keep their full allowance, and the account's daily total is not reduced by a new domain.

What to do during warm-up

1. Complete the domain's DNS setup and confirm that the domain is Active.
2. Start with real conversations, replies, and small sends to recipients who expect the mail.
3. Increase volume gradually rather than sending the full allowance as soon as it becomes available.
4. Watch bounces, complaints, and delivery feedback in the dashboard.
5. Fix an incorrect address or sender setup before trying the same large send again.

Avoid purchased lists and sudden bulk sends from a new domain. Those practices can harm delivery even after the warm-up percentage reaches 100%.

Warm-up and safety limits are different

Two protections can apply at the same time:

• New-domain warm-up reduces the daily and hourly rate-based limits for the first seven days.
• Never-paid safety limits apply to an eligible account before its first paid mail-plan charge becomes active.

Warm-up is applied on top of the safety limit, not instead of it. The day's limit is the warm-up percentage of the plan limit or the safety limit, whichever is lower, rounded down. On a trial, for example, a mailbox can send to 30 recipients a day, so on a new domain's day 2 (40%) each mailbox on that domain can send to 12. Completing the first payment removes the never-paid safety limit when the mail subscription becomes active, but a domain that is still within its first seven days stays on its warm-up percentage, which is then taken of the plan limit instead.

If sending is blocked or deferred

Check the domain's SMTP tab first. It shows the route and the domain's limits today, including warm-up and the dates they step up. Then confirm that the domain is active, the mailbox is allowed to send, and the account has no verification, billing, or security banner.

If a mail app reports a temporary sending error, do not repeatedly resend the same message. Reduce the audience, wait for the limit window, and retry once. See Fixing Common Email Sending Errors for the next steps.