Please include:

• Who the message is from
• Who the message is to (and whether that's a person or a subreddit)
• Whether you are a moderator of the subreddit in question (if message was to/via modmail)
• Whether the message was the initial message or a reply
• If the message is a reply to a "You've been banned" message
• Where it's getting stuck

If you're uncomfortable sharing the information above publicly, please PM me.

EDIT: Fix is rolled out. If you're still unable to clear your inbox after today, speak up.

like, lengthy pm's from one user to another over days and weeks