Thunderbird Automatically Download New Messages ((new)) May 2026

For IMAP users, Thunderbird supports the command. This allows the server to "push" notifications to Thunderbird the moment a new email arrives, bypassing the need for timed interval checks.

Normally, IMAP only downloads the message (sender, subject) and fetches the body only when you click the email. To force Thunderbird to automatically download the full body and attachments of all messages for offline access: Thunderbird Not Downloading New Messages [FIXED] - SysTools

: Ensure the following boxes are checked: thunderbird automatically download new messages

(POP3 only): For POP accounts, check this box so the app retrieves the entire message body immediately upon detection. 2. Immediate Notifications (IMAP IDLE)

: Right-click your email account in the left sidebar and select Settings . For IMAP users, Thunderbird supports the command

By default, Thunderbird checks for mail at startup and every 10 minutes thereafter. You can adjust these intervals to be more frequent:

Getting Mozilla Thunderbird to automatically download new messages ensures your inbox is always up to date without requiring manual "Get Messages" clicks. Whether you use (where emails live on the server) or POP3 (where they are downloaded to your PC), you can customize how and when Thunderbird fetches your data. 1. Enable Automatic Checking for New Messages To force Thunderbird to automatically download the full

: Set your preferred frequency (e.g., every 1 or 5 minutes).