On the Domains page, open the actions menu on the pre-warmed domain's row and choose Cancel pre-warmed, then confirm. Its mailboxes are removed from your account immediately, the domain goes back to Winnr, and your pre-warmed subscription drops by those addresses at the next renewal. There is no minimum term: any pre-warmed domain can be cancelled at any time.
What happens at cancellation
Immediately: - The domain's mailboxes are removed. Logins over SMTP and IMAP fail from that moment. - The domain is removed from your account and returned to Winnr. - Any sending tool using those mailboxes starts failing.
At your next pre-warmed renewal: - Your pre-warmed subscription is billed for the lower address count. - The current month isn't prorated automatically. Ask support if you want your most recent month refunded. - If that was your last pre-warmed domain, the pre-warmed subscription ends.
Cancel vs. delete
For pre-warmed domains, deleting and cancelling are the same thing. The Domains page shows Cancel pre-warmed instead of Delete domain for them, and a bulk delete that includes pre-warmed domains cancels those ones. Domains you bought or connected yourself are deleted the normal way. See Delete a domain.
If you just want a domain to stop at its end date
You don't need to cancel for that. With auto-renewal off (the default), each pre-warmed domain is retired automatically at the end of its registration and its billing stops. See Pre-warmed billing terms and domain lifespan.
What's next
Step-by-step
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1. Open the Domains page
Pre-warmed domains are marked with an amber sparkle icon. Use the Pre-warmed filter to show only those.
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2. Choose Cancel pre-warmed
Open the actions menu (three dots) on the domain's row. For pre-warmed domains the delete option reads Cancel pre-warmed.
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3. Confirm
The dialog explains that the domain returns to Winnr and its mailboxes are removed. Click Cancel pre-warmed to confirm. It takes effect immediately.
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4. Check your billing
Settings → Subscription shows your updated pre-warmed address count. The lower amount applies from your next renewal.
Frequently asked questions
What happens to the domain after I cancel?
It returns to Winnr and may be warmed again and relisted later. You don't keep the domain. This is different from domains you buy through Domains → Purchase Domain(s), which are yours.
Can I keep the domain but stop paying for the pre-warmed mailboxes?
No. The domain and its pre-warmed mailboxes go together. If you want a domain that's permanently yours, buy one through Domains → Purchase Domain(s).
Can I remove just some mailboxes on a pre-warmed domain?
No. Individual mailbox deletion is blocked on pre-warmed domains. Cancelling the domain releases all of its mailboxes together.
Can I cancel several pre-warmed domains at once?
Yes. Select them on the Domains page and use bulk delete. Pre-warmed domains in the selection are cancelled, and any regular domains in it are deleted as usual.
What happens to campaigns using these mailboxes?
The mailboxes are removed immediately, so any sending tool using them will fail to log in from that moment. Pause or move those campaigns before you cancel.
Is there a minimum term or cancellation fee?
No. The old 90-day minimum term was removed in August 2026. There's no fee. The current month isn't prorated automatically, but you can ask support to refund your most recent month (see the [refund policy](/help/billing/refunds.html)).
Does cancelling my Winnr plan cancel my pre-warmed domains?
No. Pre-warmed billing is a separate subscription. Cancel pre-warmed domains individually from the Domains page. When you cancel the last one, the pre-warmed subscription ends.
Can I cancel through the API?
Yes. POST /v1/prewarmed/cancel with the domain name, or DELETE the domain through the domains endpoint. Both run the same cancellation.