Different protocols inside the sending approach: SMTP is utilized to send email, POP and IMAP to receive mail Under, we’ll offer you a further clarification of how POP and IMAP do the job And just how they vary from SMTP. Con: Reliant on Some others. On the list of https://www.upwork.com/services/product/development-it-let-s-encrypt-premium-ssl-installation-service-or-fix-https-related-errors-1390579816356401152?ref=project_share&tier=0