Contact Form
You can use our contact form for specific issues around GMX:
On the contact form, please select the topic that most closely describes the reason you are contacting our support staff. You will immediately receive an automatic reply with a list of troubleshooting suggestions that have proven helpful to our customers in the past.
If this list does not contain the answer to your question, please reply to that email with a description of the issue you require assistance with. One of our support agents will then contact you as soon as possible.