This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Why are messages from myself classified as spam?

  • 3 replies
  • 2 have this problem
  • 13 views
  • Last reply by Toad-Hall

more options

I thought Thunderbird's spam filter was supposed to never mark as spam any messages whose From: address was in my Address Book. Well, I have my own email address in my address book, and yet Mozilla marks as spam those messages which I send using another system, from that address to any of my contacts with a BCC to myself. When that BCC arrives in Thunderbird, it is marked as spam even though it came from an address in my Thunderbird Address Book.

I thought Thunderbird's spam filter was supposed to never mark as spam any messages whose From: address was in my Address Book. Well, I have my own email address in my address book, and yet Mozilla marks as spam those messages which I send using another system, from that address to any of my contacts with a BCC to myself. When that BCC arrives in Thunderbird, it is marked as spam even though it came from an address in my Thunderbird Address Book.

All Replies (3)

more options

Are you using Pop or IMAP?

There are a few things to check. If Imap: Did the server put the email into 'spam' folder and then when thunderbird sychronised with folder, you see email in 'Spam' folder?

Do you see a message with the word 'Spam' mentioned. If the word 'Spam' is mentioned then this has not been applied by Thunderbird, but applied by the server and Thunderbird is set up to move those messages to either 'Junk (if Pop) or 'Spam' (if Imap folder).

In Thunderbird Right click on mail account name folder in folder Pane and select 'Settings' Select 'Junk Settings' Have you selected the option 'Trust junk mail headers set by eg: 'SpamAssassin'? If yes, then when the server received the email and it's spam filters set a header as spam, then Thunderbird junk controls will put email in 'Spam'. uncheck the option 'Trust junk mail headers set by..' click on OK

when you select email to read: Do you see a message 'This message maybe a scam' ? https://support.mozilla.org/en-US/kb/thunderbirds-scam-detection

Do you see a message 'Thunderbird thinks this message is 'Junk' Mail' AND you do Not have your Junk control settings set to use the option 'Trust junk mail headers set by? https://support.mozilla.org/en-US/kb/thunderbird-and-junk-spam-messages

more options

I am using POP3. The "junk" classification is NOT being made by the mail server but by Thunderbird. There is NO spam filtering whatsoever in the server, and nothing in the message headers suggests that the server made such a classification. Thunderbird is NOT set to trust any server classification.

I have attached a screen shot of the directive that Thunderbird is not respecting (circled in red).

more options

OK, I presume you have created your own 'Spam' folder. I notice you have not selected 'Collected Addresses'

Suggest: check the 'Collected Addresses' address book to see if you have your email address in that folder.