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 How to enable SMTP Authentication in email applications
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How to enable SMTP Authentication in email applications

SMTP authentication allows your email application to verify your identity with the outgoing mail server before sending messages. If you are unable to send email, verify that SMTP authentication is enabled and that your outgoing mail server settings are configured correctly.

Use the instructions below to review and update your SMTP authentication settings in desktop and mobile email applications.

 

Before you start

Prepare the following:

 

Enable SMTP Authentication in desktop email applications

Select your desktop email app from the list below to view the steps for enabling SMTP authentication.

  1. Open Outlook.
  2. Select Settings (⚙️) in the upper-right corner.
  3. Select Accounts > Email accounts.
  4. Choose the email account you want to update.
  5. Click Manage.
  6. Under Outgoing mail, verify that the SMTP server, port number, and encryption method is correct.
  7. Ensure that Authentication is enabled using your email account credentials.
  8. Select Continue or Save.

  1. Open Outlook.
  2. Select File.
  3. Under Account Information, select Account Settings > Account Settings.
  4. Select the email account you want to update, then click Change.
  5. Click More Settings > Outgoing Server tab.
  6. Select My outgoing server (SMTP) requires authentication.
  7. Ensure Use same settings as my incoming mail server is selected.
  8. Select the Advanced tab.
  9. Verify that the incoming and outgoing server ports and encryption settings are correct.
  10. Click OK > Next > Finish to save your changes.

  1. Open Mail.
  2. Select Mail > Settings.
  3. Select Accounts, then choose the email account you want to check.
  4. Select Server Settings.
  5. Under Outgoing Mail Server (SMTP), clear Automatically manage connection settings if you need to manually verify or update the server settings.
  6. Verify that the Host Name, Port, and TLS/SSL settings are correct.
  7. Confirm that the Authentication method, User Name, and Password are configured correctly.
  8. Click Save.

  1. Open Thunderbird.
  2. Select Account Settings.
  3. In the left pane, scroll to the bottom, then select Outgoing Server (SMTP).
  4. Select the SMTP server associated with your email account, then click Edit.
  5. Verify that the Authentication Method is configured correctly, and that the Server Name, Port, and Connection Security settings are correct.
  6. Confirm that the User Name is entered correctly.
  7. Click OK to save your changes.

 

Enable SMTP Authentication in mobile email applications

Select your mobile email app from the list below to view the steps for enabling SMTP authentication.

  1. Open Settings.
  2. Tap Mail (or simply search Mail for newer iOS versions).
  3. Tap Mail Accounts or Accounts.
  4. Select the email account you want to review.
  5. Tap Account or Account Settings.
  6. Under Outgoing Mail Server, tap SMTP.
  7. Tap Primary Server.
  8. Verify that the Host Name, User Name, Password, Port, and Authentication settings are correct.
  9. Tap Done to save your changes.

  1. Open your Email app.
  2. Open Settings.
  3. Select the email account you want to update.
  4. Tap Outgoing Settings or Outgoing Server Settings.
  5. Verify that the SMTP Server, Port, Security Type, and User Name are correct.
  6. Ensure Require sign-in is enabled, if the option is available.
  7. Enter or verify the account password if prompted.
  8. Save your changes.

 

Verify that your configuration is working

After enabling SMTP authentication, send a test email to confirm that you can send messages successfully. If you still cannot send email, verify your SMTP server address, port number, encryption settings, and account credentials.

For additional troubleshooting, refer to the Email sending failed – 530 Authentication Required guide.

 

 

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