> While offline, I can attach a photo to an email with the Apple mail app and Q it to send later. However Gmail pauses or fails if slow connection. I've always assumed (perhaps unfairly) that was due to an iOS API issue - but perhaps the Gmail app is buggy?
This is most likely a Gmail issue. How apps behave on an unreliable connection is entirely up to the developer.
This is most likely a Gmail issue. How apps behave on an unreliable connection is entirely up to the developer.