GMX Email Could Not Be Sent - [SOLVED]

GMX email could not be sent if the particular recipient is blacklisted. Check whether you can send email to other recipients. If you have blocked any recipients, remove the recipient from the blacklist category. In most cases, you will get a return email message mentioning why the email message is not sent. It is known as a return e-mail (bouncer). If your recipient’s Inbox is full, the person won’t be able to receive any emails. In such cases, the recipient has to free some space to receive your email messages. Consider the procedure that is given below to fix the issue.

Solution To Solve:

  • Step 1: If you are adding any attachments, make sure that it is less than 100 MB to send the email.
  • Step 2: Make sure that your GMX email account is properly configured.
  • Step 3: If not, remove the GMX email account from the email client app and readd it.
  • Step 4: Ensure to enter the correct server credentials to configure your email account.
  • Step 5: The correct mail server address is
  • Step 6: If you have configured your email account using port number 587, try changing it to 25.
  • Step 7: Make sure to use a secure connection, either TLS or SSL.
  • Step 8: Choose the password as the authentication method.
  • Step 9: Confirm that the settings you have made are correct. 
  • Step 10: Mostly, the GMX email could not be sent issue occurs on iPhone or iPad.
  • Step 11: If you have readded your GMX account, restart your device to start using your account.

If you are still having GMX email could not be sent issue, you can click on the Call button on this page to contact our technical support team. We will sort your issues and fix them at the earliest.

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