Yesterday I got an email with a video attachment (which was taken with an iPad). I opened the email with the Gmail app. I gently touched the attachment and a new screen with the video appeared. I wanted to save it to my camera roll so I touched the share button but it gave me only three options; open the attachment in Chrome, Safari or copy the link. I tried to open the attachment in Chrome and Safari thinking that maybe those apps have the option to save an attachment but it didn’t work.
Then I thought maybe Mail app will be a solution. I opened the app and touched the attachment. Something different than other apps happened. Under the attachment icon I saw that app started to download the file. When it was finished the video didn’t start automatically. I touched and held my finger for a second and a small screen appeared asking me to mail, quick look open in a different app and SAVE TO CAMERA ROLL!!! That was it. This was the solution to save a video attachment permanently to iPad.