If the Warmup column shows Paused (red triangle), warmup is on hold. This article covers everything that can put it there - and how to get it running again.
There are two ways warmup gets paused:
Auto-paused by MailBeast when the account hits an infrastructure issue (DNS, auth, bounces, provider policy). The badge flips to Paused and a hover-tooltip explains why. There's a Resume Warmup button to clear it once the underlying issue is fixed.
Manually paused when you toggle warmup off yourself in the Warmup tab. Re-enabling is just toggling it back on.
Hover the Paused badge to see the reason. Below are all the messages you might encounter and what each one needs from you:
Message | What it means | What to do |
|---|---|---|
"DNS records missing. Add MX & SPF records, then click Resume." | DNS Health Score dropped below the threshold (60). Sending without MX/SPF/DKIM actively hurts reputation, so warmup stops to protect the account. | Open the account, scroll to Health Card -> DNS section, identify the failing record, fix it at your DNS provider. See How to Set Up SPF, DKIM, and DMARC. Once the score is back at 60+, click Resume Warmup. |
"Authorization lost. Click Reconnect to restore access." | Google or Microsoft revoked MailBeast's access to this mailbox. | Click Reconnect on the account row and sign in again with your Google/Microsoft account. Warmup resumes once the account is back to Active. |
"Authorization lost. Click Edit Credentials to update your password." | Custom SMTP/IMAP password is no longer accepted by the provider. | Click Edit Credentials on the account, paste the new password, run the connection test. Warmup resumes once it passes. |
"Your email provider rejected outgoing messages due to a policy violation. This is a provider-level restriction and affects all sending, including warmup and campaigns." | The mailbox provider (Google/Microsoft/etc.) flagged the account at their side - usually for spam-related reasons. All sending is blocked, not just warmup. | Resolve directly with the provider (their support / abuse team). For cold email, repeat policy blocks usually mean it's time to retire the mailbox and rotate to a fresh one. |
"Bounce issues detected. Check account settings, then click Resume." | The account hit a hard-bounce pattern that suggests an underlying problem with the mailbox itself or the lists you're sending to. | Audit recent campaigns for list-quality issues. Verify the account is still healthy at the provider. Click Resume Warmup once you've addressed the root cause. |
"Connection issue. Verify credentials, then click Resume." | Generic SMTP/IMAP connection failure, not specifically auth. | Verify host/port/credentials, run the connection test, then click Resume Warmup. |
Two situations that LOOK alarming but don't pause warmup, because pausing would only make them worse:
Low inbox rate during warmup. Same logic. Warmup pulls inbox rate up over time.
Blacklisting. Warmup keeps running but with a downgraded pool so it doesn't impact others. See Blacklist Monitoring.
Email Accounts -> click account -> Warmup tab -> Warmup Mode off. Stops immediately - no more sends are planned for this account.
When this is genuinely useful:
Decommissioning the account for good.
Account-level diagnostics where you want warmup activity out of the picture so you can isolate what's affecting deliverability.
Provider migration that requires reconfiguration time.
When it's a mistake:
"I want my full daily limit for campaigns" - warmup already steps back automatically when campaigns are heavy. Don't disable; let it adapt. See Warmup and Campaign Sending Together.
"Warmup emails are landing in spam" - that's exactly what warmup fixes through warmup engagement. Disabling stops the fix.
"I want to change a setting" - settings update live without pausing. Just edit them.
What to Expect from Warmup - what each badge means in normal operation.
Configuring Your Warmup - settings panel and what each control does.
Blacklist Monitoring - separate health signal that doesn't trigger Resume but still needs attention.
