Quick reply hook

[Thunderbird8]

I made a plugin to block double-posting if the previous post is less than a day old, and attached the plugin to the newreply_post_start hook (which allows people to enter the Post Reply screen, but not actually post it). Similar purpose, and as far as I can tell, it works for Quick Reply too (since that hook is called when the post is being entered).

Try using newreply_post_start instead and see what happens.