GMX Mail Not Sending - [SOLVED]

If you are not able to send any emails from your GMX email account, then perform the simple fixes given below and see if the GMX Mail Not Sending issue could be resolved.

  • Step 1:Restart the session.
  • Step 2:Recheck the recipient email address entered in the field.
  • Step 3:Try to access GMX email using another web browser.
  • Step 4:Check the email settings.

Now, if the issue is not fixed, here are the steps that you have to perform to fix the GMX mail not sending issue.

Synchronize The GMX Mailbox With Outlook 2016:

  • Step 1:Navigate to the Email option on your GMX email account page and select Settings > POP3 & IMAP.
  • Step 2:Make sure to choose the Send and receive emails via external program (Outlook, Thunderbird) checkbox.
  • Step 3:Press Apply and save the changes.
  • Step 4:Now, open Outlook 2016 on your device. Under the File menu, select Info > Add Account to set up a new account.
  • Step 5:Enter an email account on the Outlook wizard.
  • Step 6:Select Advanced options and then select the Let me set up my account manually checkbox.
  • Step 7:Choose the account type as IMAP.
  • Step 8:Enter the following settings under the IMAP Account Settings dialog box:
  • Step 9:Incoming mail server:; port: 993; encrypted connection: (SSL/TLS).
  • Step 10:Outgoing mail server:; port: 587; encryption method: STARTTLS.
  • Step 11:Click the Connect button on the IMAP Account Settings dialog box.
  • Step 12:Under the login dialog box, enter your email address and the password.
  • Step 13:Press OK and sync your GMX account with Outlook 2016.
  • Step 14:After fixing this GMX mail not sending issue, Now try sending the GMX mail.

Synchronize The GMX Mailbox With Windows Mail:

  • Step 1:Select Settings from the bottom right corner and click Accounts.
  • Step 2:Choose Add an account > Other.
  • Step 3:Select IMAP and then enter your email id and the password.
  • Step 4:Click on to Show more details option.
  • Step 5:Enter the following manually,
    1. Incoming (IMAP) server:
    2. Port (Incoming server): 993
    3. Incoming server requires SSL: Yes
    4. Outgoing (SMTP) server:
    5. Port (outgoing server): 587
    6. Outgoing Server requires SSL: No
  • Step 6:Click the Connect button and sync your GMX account with the Windows Mail.
  • Step 7:Now try sending the GMX mail once GMX mail not sending issue got fixed.
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