How do I set up email in Mozilla Thunderbird?

Add your mailbox in Thunderbird on Windows, macOS, or Linux. Menu labels vary by release.

1. Open Account Settings and use Account Actions → Add Mail Account, or the welcome screen's existing-email-account option.
2. Enter your display name, full email address, and mailbox password. Saving the password on your own device is optional.
3. Choose Configure manually. Set IMAP and SMTP using the ports and security options below; use Normal password authentication and the full email address for both usernames.
4. Choose Re-test, then Done once the settings verify. Allow time for folders and messages to synchronize.

• Username: Your full email address; use your mailbox password.
• IMAP (recommended): webmail.globalmcs.net, port 993, SSL/TLS.
• POP3 (alternative): webmail.globalmcs.net, port 995, SSL/TLS.
• SMTP: webmail.globalmcs.net, port 465 with SSL/TLS, or port 587 with STARTTLS.
• SMTP authentication: Required, using the same full email address and mailbox password as incoming mail.

Use the server hostname supplied for your account. A custom name such as mail.yourdomain.com works only when its DNS and valid certificate are configured for that name. If a certificate warning appears, stop and contact support to correct the hostname or certificate. Do not bypass the warning or disable certificate validation. Enter your password only in your own mail application or verified control panel, never in a support chat.