Answer 1

To create a Mailto link, you need to use the HTML <a> tag with its href attribute, and insert a "mailto:" parameter after it, like the following: 
<a href="mailto:[e-mail]">Send Email</a>

Here is some more info:
https://css-tricks.com/all-about-mailto-links/
https://www.freecodecamp.org/news/mailto-link-how-to-make-an-html-email-link-example-code/
https://www.wikihow.com/Create-an-Email-Link-in-HTML

if you want to use the form to submit to email. Try this.
https://www.geeksforgeeks.org/how-to-use-mailto-in-html/

Answer 2

Can you plz share the code to help you further

Answer 3

read this: But the third option is actually an ad. You can probably use other alternatives.

https://herotofu.com/solutions/guides/how-to-build-html-form-that-sends-email

you can explore SMTP options here. There are probably others not included.

https://moosend.com/blog/free-smtp-server/#:~:text=Google%27s%20free%20SMTP%20server%20is,service%20is%20a%20Gmail%20account.