Yandex mail does not send applications. What to do?

Question

PHP

I create mail (Yandex) for the client's site, through which PHPMailer sends letters, but it does not send messages.
From my mailbox everything comes instantly.
How to make it work?
PS Not tied to a domain.

Answer 1

There is an option that:
1. you need to link a phone number to your Yandex mail account and confirm it
2. enable something in the settings

Answer 2

Good afternoon!
Better not to use PHPMailer. since it is not a mail server. If you have some kind of CMS, then there are many plugins that allow you to connect to the mail server and send mail through it (I use the SMTP protocol).
The fact is that now mail servers check the sender, if they see that something is wrong, they send him a request; If you are a mail server, resend your letter . and in such cases your letter will be discarded. This is just one example of email verification...