Problems with your system email can prevent you from sending email to clients or connecting to your mail provider.
Problems in the support ticket system and its related features can prevent email replies from importing properly and cause other disruptions.
Email importing retrieves customers' email replies to support tickets. You can use POP3, IMAP, Google®, or Microsoft® for email importing.
The Mail tab in General Settings allows you to configure how WHMCS sends and manages email. You can choose and configure your mail provider, configure email headers and footers, and more.
You can choose from several supported mail providers for your WHMCS installation, including Google™, Mailgun, Microsoft®, PHP Mail, SendGrid, SMTP, or SparkPost.
Set up email importing using OAuth2 and Microsoft Entra® ID (formerly Azure Active Directory). Email importing with Microsoft includes additional security benefits with OAuth2 authentication.
You can configure Microsoft® as your mail provider using Microsoft Entra® ID (formerly Azure Active Directory). To do this, you will also need to create an app in the Microsoft Entra console.