Overview
When sending through a brand new dedicated IP, introducing a sudden, massive volume of email can trigger spam filters and damage your deliverability reputation. Mailgun's Automatic IP Warmup slowly and systematically increases your sending limits over pre-determined stages, safely establishing your sender reputation with Internet Service Providers (ISPs).
Monitoring Warmup Progress
You can track real-time warmup progress in two places within the Control Panel:
1. From the Main Dashboard Table
The Warmup column on the main IP inventory page displays the current active stage and sending volumes for any active warmups at a glance.
2. From the IP Details Page
Click on your dedicated IP address to view the detailed Warmup progress card:
-
Stage: Displays the active stage of warmup (e.g.,
Stage 7/30). -
Emails sent: Displays current emails sent compared to the current stage limit (e.g.,
9,059/14,000).
Disabling Automatic IP Warmup
If your sending volumes require full, unrestricted limits immediately, you can choose to disable the automated warmup process.
🛑 Warning: High-Risk Action!
Disabling warmup will immediately remove all sending limits from this IP, allowing unrestricted volume. Doing this prematurely can severely damage your IP and domain reputation, causing emails to be blocked or routed directly to spam folders. Additionally, disabling warmup permanently discards your progress; if re-enabled later, the process restarts completely from Stage 1.
To disable warmup:
- First, log in to the Mailgun Control Panel (if you have not already done so).
- Then, at the top-right corner of the page, click the Profile drop-down menu to expand its list of options.
- Next, click the Dedicated IPs option. Alternatively, you can use this direct link.
- On the IP Details page, locate the Warmup section header.
- Click the Disable warmup button.
- A warning modal will appear. Review the risks carefully.
- Click Disable warmup inside the modal to confirm the action.
Need Support?
Our Support Team here at Sinch Mailgun is happy to help! Reach out to us in the Support page of your Mailgun Control Panel, and we'll be with you shortly!