PHP sending emails. PHPMailer sends email via SMTP for 5 seconds, is that normal?

Question

PHP

I decided to use the PHPMailer library, made all the settings and started testing. I noticed that the execution time of the script that sends the message is from 5 to 6 seconds. Is this normal behavior for sending mail via SMTP using PHP, or is it too expensive and should I look for other libraries? Can you tell me others with the possibility of sending via SMTP?
UPD:
Sending is via smtp mail.ru
No
attachments I'm testing on a local machine

Answer 1

It is too long.
However, it should be borne in mind that many servers have a limit on the number of letters per unit of time, I don’t know specifically for mail.ru, but on the last server with which I worked, the limit was 10 letters per minute, so I was forced to implement a delay anyway.
Are you measuring the sending time by the script itself, of course? Because mail servers can have their own internal queues, and so on.
PS I didn't google for a long time, but the first information I came across was "mail.ru 1 message per minute", in general, it might make sense to study whether this server is suitable for mailing in principle ..