On a related note, we’re getting similar complaints in the last 48 hours:
EDIT: Confirmed in Mandrill logs that a topic creator got 2 apparently-identical notifications about follow-up replies to that topic. User has all of the following preferences activated:
- Send me an email when someone messages me
- Send me an email when someone quotes me, replies to my post, mentions my @username, or invites me to a topic
- Send me an email for every new post (unless I mute the topic or category)
- Send me email notifications even when I am active on the site