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For photos, you can do this although it's a bit cumbersome. Switch to Photos, tap+hold on a photo, tap Copy, switch back to email and paste. For multiple photos, tap the box with arrow in the upper right, select multiple photos, then tap Copy, switch to Mail and paste.

Yeah see, this is another thing iPhone should "borrow" (apple would call it stealing if it went the other way) from android.
 
Whe are you guys using Gmail set up as exchange instead of just adding regular gmail account in iOS mail app? Is there any difference?

My understanding is that google calendar sync will only work if the account is setup as an exchange type.
 
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