[iMore Question]

I can send through the Mail app, but if I go to any other app including Photos, and go to the "export" - "send" icon where you can send a file to any other app. and select mail, it pops up, as normal, a mail window with the attached file, but if when sending the mail, it never goes out it doesn't even appears in sent mails.

[Ledsteplin]

Welcome to iMore! Are you marking the files with the blue dot check? Which email client are you using? I tested this in the Email app, and it worked fine. Have you tried a hard reset (reboot)? You might also try Reset All Settings.
Reset All Settings
Go to Settings >General >Reset >Reset All Settings. This resets to default everything in Settings, including notifications, alerts, brightness, and clock settings like wake up alarms.
NOTE: NOT "Erase all content and settings".
Register in so we can better help you.

[Sherry_B]

Does your email account have a file size limit? Some do, so be sure you're not trying to send something larger than your email account will allow.

[bernimemo]

Tried everything above and nothing works....