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I'd like to know if there is a way to auto-hide e-mail signatures in Thunderbird (setting or extension). Ideally, it should only show a line with some text like "Click here to display signature".

It's pretty annoying when in an e-mail thread some people write 2-3 lines of content and have 15 line signatures.

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I don’t think this is possible, because signatures are basically part of the regular message body. You could only approach this problem heuristically. – Daniel B Jul 2 '14 at 5:23
Imho, this problem has to addressed not by hiding signatures when reading email, but by educating people and teaching them to use email client properly. Most modern email clients have an option to include signature only once within the email thread and to omit it in all replies. (I know this does not help to resolve your problem) – Art Gertner Jul 2 '14 at 9:05
up vote 1 down vote accepted

The 2.8.1 version of the Thunderbird Conversations extension claims to have the ability to collapse signatures by default.

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You might try the add-on Element Hiding Helper for Adblock Plus. It should work as long as the signature is a separate block in the message. If this is not the case, I don't think there is an easy solution.

Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

You simply select the element you want to be hidden and then choose which attributes of this element should be taken into account when hiding it in future. The element hiding rule is generated and added automatically.

This add-on requires the following add-ons to work properly: Adblock Plus.


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Signature Switch

I did that with an extension for Thunderbird.

Go to Tools>Add ons and then search signature switch and install this add on. 

This provide you the feature of automatically off/on your signature in Thunderbird.

Addon Link:


In the programmatic way for HTML signatures you can do that by adding


with HTML code of signature. This will turn off the display signature. Might be a way around.

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The OP is not looking for something like Signature Switch. The idea was to change the way the received, not sent emails. – Cristian Ciupitu Jul 3 '14 at 13:32
ohh question is little confusing but its ok now i understand.... – Innovator Jul 3 '14 at 13:43

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