Hi. This problem started for me on getting the new iPhone 6s a month or so ago: when I select photos to email to myself or someone else, I'm able to prep the email and hit send, but then on checking my outbox and sent folder (or the inbox of the recipient), there's no evidence of the email existing. Additional info: I can send regular emails just fine. I have the latest iOS and general updates. Never had a problem with this for my previous phone!