Is there any way (or add-on) to include the full reply headers (To: From: etc fields) when replying in Thunderbird?

By default it only places a "On %date%, %user% wrote".

1 Answer 1


The reply header format is driven by reply_header_* preferences.

Actually the mailnews.reply_header_type preference is supposed to accept an additional value 4 to make the format 'user specified' - at least that's what they say in the sources:

// 0=no header, 1="<author> wrote:", 2="On <date> <author> wrote:"
// 3="<author> wrote On <date>:", 4=user specified

pref("mailnews.reply_header_type", 2);

However I was never able to figure out where the user defined format had to be defined at.

I recommend not bothering with preferences at all and instead using SmartTemplate - it is a great extension that does its job well.

There is a great page in the Mozilla KB about all that:


  • Tnx, I ended up using the "Change quote and reply format" extension Jun 16, 2011 at 10:28

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