Apr 04, '06 06:41:00AM • Contributed by: teszeract
To work around this, drag the the inappropriately titled, wrongly spelled, or incriminatingly subjected message out of the Inbox into Drafts. Then double-click to edit the message, change the Subject line, and click Save. Drag the message back to Inbox, and you're done.
Note that the received date and time will change when you do this.