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Flag incoming mail marked with return receipt

Posted on 2009-04-23
Medium Priority
Last Modified: 2012-05-06
Is there any way to get Thunderbird to alert me that an incoming message has a return receipt flag on it BEFORE I open the message and the receipt is triggered? I work from home, and sometimes I'll look through my work mail late at night. However, I don't want customers to know I'm looking at mail at that hour; if I knew a message had a return receipt, I'd leave it until the next day. (Just blocking the return message from being sent raises its own red flags; I know there's no way to change the time that it reports.) However, I can't find any way of displaying that information, either as a column of the Inbox list of messages or in the message filters where I could color-code such a message. Any ideas?
Question by:ElrondCT
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Accepted Solution

sda100 earned 1500 total points
ID: 24223001
Hi there,

Blocking receipts doesn't raise any red flags - quite the opposite... requesting them raises more flags.  Most people in the know turn off sending of receipts.

Anyway, a header is added to the message if a receipt has been requested.  This header is:


You can create a filter on this header, to say... modify the subject line?  If you don't want to touch the actual message, you could choose the filter action to 'tag' the message, change it's 'priority' or 'add star' to the message list for that message.

Steve :)
LVL 20

Author Comment

ID: 24225284
Doing a filter and adding a star provides what I want. It wasn't immediately obvious how to create the filter, but I found that choosing "Customize" in the filter selection box allows me to enter "Disposition-Notification-To" as a new header item to work with. There doesn't seem to be an exists/doesn't exist option, but choosing "contains" as the match method and looking for an @ sign, which every email address will have, seems to do the trick.

I'm listing this information for anyone who might look at this thread in the future. Thanks for your help pointing me in the right direction.

Expert Comment

ID: 24226590
Sorry it wasn't immediately obvous.  From your question, you seemed fairly clued-up on these things - it's difficult to judge correctly!

Anyway, what you did to create the filter is actually the perfect way of doing it.

Steve :)
LVL 20

Author Comment

ID: 24226644
I've done some stuff with Thunderbird (and a lot on PCs in general), but custom filters was a new one for me. I was starting to post a question to you about how to do it, but I decided to play around with it, and it worked pretty easily. Thanks for your help.

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