iOS: Apple's Mail app doesn't allow you to send more than 5 photos at once on the iPhone. File management app Documents now relieves users of that struggle.
Readle's Documents is a fairly popular app, but it can do a few clever things you might not have realized. Give Documents access to your Camera Roll, select as many photos as you want, and send them to the Mail app. It will take a few minutes depending on how many photos you have, but it's well worth the wait. You can avoid any extra steps you would have to take otherwise, and all it takes is a free app.
Check out more clever uses for the Documents app at the link below.