Different protocols within the sending system: SMTP is used to send email, POP and IMAP to receive mail Underneath, we’ll give you a further rationalization of how POP and IMAP operate and how they differ from SMTP. email. Whilst SMTP does a lot of the weighty lifting for email https://www.upwork.com/services/product/development-it-migration-to-magento-2-nodejs-in-new-vps-server-aws-linode-digitalocean-1445680653983371264?ref=project_share&tier=0