Here's how this site works. You encounter a technical problem, you try a bunch of things, you follow up on a variety of searches for relevant information, and when you're stuck, you post here with the steps that you've followed to try to solve the problem. That shows you've done some work on the problem -- and we respect that.

What we don't respect is questions like 'How do I do foo?' when it appears you haven't really tried anything, not even the most basic step like searching on CPAN for 'GMail', where there's a perfectly good module called Email::Send::Gmail (it's second on the list).

I haven't tried this module, but it seems to do exactly what you want. Why don't you try it out and let us know how it works? And next time, more effort please.