Customer capture form, or how to send information to the mail after subscribing?

Question

Marketing

I notice this kind of subscription on many sites, but I don’t know how to implement an autoresponder, so that after clicking on a person’s mail, a letter would be sent, and at the same time, his mail would also fall into the database.
Paid services like getresponse.com are not suitable, I'm sure that you can do a similar thing yourself.
Who will advise what?

Answer 1

If your site is on WordPress, then there are a lot of plugins for such tasks, for example, Contact Form 7.