pop3 with worpress

Hello..
I’m new to Wordpres and I saw that to send emailtipo form I need to install or playing pluguin code function.php
The problem is that my setup is pop3 mail so I configure sending email with pop3 (mail.micorreo.com), but I do not see any plugin for it, they’re all for gmail, the SMTP type, etc ..

as I can do to send emails with this mail service ??