Every message has an attachment
- This article was written for Thunderbird but also applies to Mozilla Suite / SeaMonkey (though some menu sequences may differ).
Some anti-virus programs scan every new message and add an attachment certifying that it scanned the message and that it didn't find any viruses. If this happens you'll typically see a paper clip icon next to each message in the folder listing and each message will have a "Part 1.2" attachment with text similar to:
- No virus found in this incoming message.
- Checked by AVG Free Edition.
- Version: 7.5.516 / Virus Database: 269.20.5/1278 - Release Date: 14/02/2008 10:28 AM
AVG is notorious for doing this. If you're using AVG you can disable this feature by
- Double clicking on the AVG icon in the system tray
- Going to Tools -> Advanced settings
- Clicking on the Email Scanner option
- Disabling "Certify e-mail for incoming or outgoing e-mails"
- Pressing the OK button
If your email provider added the text you need to login to webmail using a browser and find the appropriate webmail command to disable it.
Note: The anti-virus program won't add the attachment if the message was digitally signed, since the attachment would ruin the signature.