https://docs.whmcs.com/9-1/tags/smtp/Recent content in smtp onHugo -- gohugo.iohttps://docs.whmcs.com/9-1/troubleshooting/troubleshoot-addon-modules/live-chat/live-chat-smtp-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-addon-modules/live-chat/live-chat-smtp-errors/Explains why Live Chat cannot send email over SMTP: it uses the PHP mail() function regardless of the WHMCS Mail Provider setting, and the fix requires following ChatStack’s separate SMTP authentication setup steps.https://docs.whmcs.com/9-1/system/general-settings/general-settings-mail/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/system/general-settings/general-settings-mail/Compares the PHP Mail, SMTP, MailGun, Microsoft, SendGrid, and SparkPost mail provider configuration requirements, and documents Disable Email Sending, Disable RFC3834 Headers, Global Email Signature/CSS/Header/Footer, System Emails From Name/Email, BCC Messages, and Presales Form Destination settings.https://docs.whmcs.com/9-1/system/email/mail-providers/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/system/email/mail-providers/Lists the supported mail providers (Google, Mailgun, Microsoft, PHP Mail, SendGrid, SMTP, SparkPost) with their OAuth2 support status and setup instruction links, configurable in the Mail tab of General Settings.https://docs.whmcs.com/9-1/system/email/email-tutorials/use-google-for-system-mail/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/system/email/email-tutorials/use-google-for-system-mail/Walks through configuring SMTP with smtp.gmail.com on port 465 and OAuth2 authentication in the Mail tab, creating the Google Cloud OAuth consent screen and client ID, connecting the account for a Connection Token, and enabling SMTP debugging for troubleshooting.https://docs.whmcs.com/9-1/system/email/email-tutorials/use-smtp-for-system-mail/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/system/email/email-tutorials/use-smtp-for-system-mail/Lists the common SMTP port numbers by SSL type (None, SSL, TLS), gives steps to configure SMTP settings and test the connection under Configure Mail Provider, how to create an SMTP email account in cPanel, and how to enable Debugging for SMTP troubleshooting.