While both tags are popular, I think we should merge mail and email since you can't send a real mail in ubuntu and most questions using mail are often problems in sending or receiving email.
Agreed. Theoretically there might be questions about how to order Ubuntu installation media by postal mail, but since most questions about mail are about email, I think mail should be made a synonym of email.
Perhaps a better description to the
How do you make the tag code?
You can edit the mail tag wiki here. Jul 10, 2012 at 1:30
Thanks, I have added a tag wiki for mail. It's awaiting approval. Jul 10, 2012 at 1:45
@user66987 You can make insert a reference to a tag using
[tag:mail]which will print mail (looks different in question/answer posts) Jul 12, 2012 at 10:36