Install Exim4 and configure mail server on Linux / Ubuntu
How to install exim4 & configure mail server on Linux (Debian) or Ubuntu as well as steps to create DKIM, DMARC and SPF to ensure secure email transmission.
Code Send SMTP Email from WordPress Without a Plugin
Code send SMTP email from WordPress without plugin. Copy the code and paste it into functions.php; your website can now easily send emails.
Setup Gmail SMTP And Configure Sendmail On Ubuntu 22.04
How to install and configure Sendmail on Ubuntu 22.04 using Gmail SMTP, send email from VPS server or localhost without DKIM/DMARC authentication.