How to Use Gmail as Your Mail Server in 3CX

Follow the steps below to configure your Gmail account as the Mail Server for 3CX Phone System. In this configuration your Gmail account will be used to send email notifications, welcome e-mails and fax messages.

Note: In this configuration, Gmail can send a maximum of 500 emails per day. An outbound TCP rule on port 587 may be required on some firewalls.

Configuring your Gmail Account as the “Mail Server” for 3CX

How to use Gmail as you mail server in 3CX

  1. Access the 3CX Management console and go to SettingsEmail
  2. Click on the Mail server tab and fill in the following information
  3. Mail server: Enter
  4. Reply Address: Enter gmail email address (must be the same as in step 5)
  5. Username: Enter gmail email address
  6. Password: Enter the password for your gmail account
  7. Enable SSL/TLS checkbox

Grant 3CX Phone System Access to your Gmail Account

  1. Sign in to your Gmail account
  2. Click on the google apps button on the top right hand corner  APPS
  3. Click More and click on My Account
    Sign in & Security Gmail
  4. In the Section “Sign in and security” click on “Connected apps & sites”
  5. Scroll down and set “Allow less secure apps” to ON

Grant 3CX Phone System Access to your Gmail Account Part II

In some cases, it is required to login to Gmail at least once from the 3CX Server.
Go to, authenticate with your credentials. Like this Gmail will have in it’s records a successful authentication from the 3CX Host  on this account.