Contact formulary in jekyll

Guys, how can i put a contact formulary in jekyll? p.s: i have a template in php of formulary(all the past of code) but, i cannot put this in jekyll struct? why? My site have sucess without static jekyll, just in convecional html… how can i put the past of php in jekyll? to submit email? my formulary has a name, email, object and message

There are many services that allows you to embed forms on static websites.
Some of them are listed on