Send by Selecting Messages/Conversations (Thunderbird)

Is there an add-on (or even default functionality) for sending an email to multiple recipients by selected conversations? Like, if you have 10 different email replies for RSVPing (for example), I'd like to select all 10, then right-click and say "Send Email to All Selected" or something like that.

Does this already exist somewhere that I'm missing?

Recent Questions...