Problems with your system email can prevent you from sending email to clients or connecting to your mail provider.
You can choose from several supported mail providers for your WHMCS installation, including Google™, Mailgun, Microsoft®, PHP Mail, SendGrid, SMTP, or SparkPost.
You can change the From address that your WHMCS installation uses when sending email.
You can customize any of the emails that your WHMCS installation sends to your customers. WHMCS sends email whenever specific actions occur, and each action has an associated email template that you can customize from within the Admin Area.
You can disable all outgoing mail from your WHMCS installation. This allows you to test customizations, verify system changes, or perform other routine tests without sending email to customers.
You can easily configure WHMCS to send you a BCC copy of all of the email your WHMCS installation sends to clients.
You can customize email templates for multiple locales, to ensure that your clients receive emails in their preferred language.