Maintenance for the week of May 25:
• PC/Mac: No maintenance – May 25
• ESO Store and Account System for maintenance – May 27, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
Logging out (to the character select screen) and back in OR traveling to a different zone will flush your email queue immediately....otherwise you can play the waiting game. It will get to you eventually.