TL;DR - for almost everyone, warmup is already on. MailBeast auto-enables warmup the moment you connect an email account, with sensible defaults already filled in. You don't have to flip a switch to start. You just need to know where to look if you ever want to turn it off, change defaults, or verify it's running.
When you add an account through any path - single Google/Microsoft OAuth, custom SMTP, or CSV bulk import - once validated, MailBeast immediately enables warmup.
Why auto-on? Cold email accounts that go straight into campaigns without a warmup period are a leading cause of inbox-placement disasters. Auto-enable means new users land on the right path even if they skip the warmup docs entirely.
You don't need to open a detail sheet to check. The Email Accounts table has a dedicated Warmup column with one of these values per account:
Badge | What It Means |
|---|---|
 | Warmup is active and progressing through the 14-day ramp |
 | Past the 14-day ramp. Warmup keeps running at maintenance volume to preserve reputation |
 | Warmup was halted. Hover for the reason (DNS issue, account blocked, manual pause, etc.). See Warmup Troubleshooting. |
 | Warmup is off for this account |
If the column shows the orange Day N badge or the green Active badge, you're good - nothing else to do.
For a deeper look (today's sent count, inbox/spam split, blacklist status), click the row to open the account detail sheet, then the Warmup tab.
There are two paths:
Open Email Accounts.
Click the account row to open the detail sheet.
Click the Warmup tab.
Flip the Warmup Mode toggle off.
The change takes effect immediately - no more new warmup emails will be planned for this account. In-flight ones still get sent.
In the Email Accounts table, select the rows you want to change.
Use the bulk actions dropdown -> Bulk Edit Settings.
The same warmup toggle and settings panel opens for all selected accounts at once.
Most users should leave warmup on indefinitely - even after the 14-day ramp ends and the badge flips to Active, warmup keeps generating positive engagement signals in the background to protect your reputation.
If you're disabling because warmup is sending too much, don't disable - lower the daily limit instead. See Warmup Settings.
Warmup auto-enables regardless of DNS state, but it can only send emails when the account meets these conditions:
Account status: Active.
DNS Health Score >= 60. SPF, DKIM, MX must pass. Until the score reaches 60, warmup stays on but no emails actually go out - you'll see Day 1 in the column with 0 emails sent today. See How to Set Up SPF, DKIM, and DMARC.
If you connect a brand-new domain with SPF/DKIM not yet set, warmup is queued and starts as soon as DNS propagates and verification passes.
Configuring Your Warmup - pick a strategy (Standard / Aggressive / Custom) and tune daily limit, randomizer, reply rate, language, timezone.
What to Expect from Warmup - the visible 14-day ramp and what Active means.
Warmup and Campaign Sending Together - what changes once you start sending campaigns.
