If you can’t send emails while connected to ExpressVPN on Windows, Mac, or Linux, ExpressVPN might have blocked your email client’s TCP port 25, which is used to transfer emails between mail servers.

To resolve the issue, adjust your settings in the ExpressVPN app as follows:

  1. Allow access to the local network
  2. Exclude your email app from connecting to the VPN

1. Allow access to the local network

  1. On the ExpressVPN apps for Windows, Mac, or Linux, click the Profile tab.
  2. Under Settings, click Internet Kill Switch.
  3. Under LAN, click Allow access to devices on local network to toggle on.

2. Exclude your email app from connecting to the VPN

You can use ExpressVPN’s split-tunneling feature to exclude your email app from connecting to the VPN. To do so:

  1. On the ExpressVPN apps for Windows, Mac, or Linux, click the Profile tab.
  2. Click Split Tunneling.
  3. Toggle Enable Split Tunneling on.

From there, you can add your email app and set up a rule for it bypass the VPN:

  1. Click Add App.
  2. Select your email app.
  3. Click Open.
  4. Click the dropdown next to the app you just added and select Bypass VPN.

If the issue persists, you may need to:

  • Update to the latest version of your email app.
  • Change your outgoing port number from 25 to 587.
  • Disconnect from ExpressVPN to access your email. This may be necessary if you are using your ISP’s email server and it blocks email traffic coming from outside of its own network.

Need help? Contact the ExpressVPN Support Team for immediate assistance.

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