We can definitely make the case that it used to and that it doesn't anymore. Sending an email isn't like filling in several text boxes on a web form, it's composing/editing a lengthy message that often has proper formatting like indentation.

I actually use tab -> enter to send and I find it quite convenient. Why are people complaining about this when we've all tacitly admitted top posting?

IMO bigger problems are that email ought to be plain text by default and replies ought to go in the bottom (with three dots on the top if necessary).

Sorry if I made anyone mad. Now you know how I felt reading this post.

Ctrl + Enter is much more efficient for me.

How long has Gmail supported Ctrl + Enter? I agree. It is pretty sweet. Now I can go back and forth between Outlook and Gmail!

Ctrl-Enter is the one keyboard shortcut I wish I could disable. It is my most common mis-hit, usually when pasting something into an email and then hitting enter to advance to the next line. I also miss the ability to tab within the compose box, but on the web I pretty much always assume Tab is not going to indent text I'm typing.

If you're replying to an email you can quickly press Ctrl+a, Ctrl+end to go to the bottom, for all your bottom-posting needs.