Can I limit myself to JS in a project?

Question

Web development

I started making a relatively simple landing page for ordering services. Is it possible to send messages to mail and send a message in telegram using JS? I recently started learning js, I was thinking about doing my first job, but the further I think over the functionality, the scarier)

Answer 1

can.
but not necessary.

Answer 2

You can write a backend on a node.