By release time we need to have either gotten bug 248681 into a state we are comfortable with for landing in rc1 or we should turn on the reply to sender button by default. Original designs of the header buttons called for bug 248681, which was never put on priority to fix, and now we are receiving the kind of expected feedback that comes with this change to defaulting to public replies instead of private. The code change is a simple boolean pref switch, this bug is just about remembering to do that. Likely this should block and possibly depend on bug 248681

Here's the patch to make this happen

I'm setting this as blocking seeing as the UI for bug 248681 will not land for TB3.0 and this is our fallback.

Comment on attachment 408902 [details] [diff] [review] toggle reply_sender button pref to on Mark, can you review this?

Checked in: http://hg.mozilla.org/comm-central/rev/32734f9b4f15 http://hg.mozilla.org/releases/comm-1.9.1/rev/b38d28cdb52a

This change makes bug 520249 considerably worse, sometimes leaving only 2 characters of the "From" (Author), due to the extra button. I don't think the affected users will find or even look for the context menu entry.