Cancel your Gmx Premium subscription by mail
Gmx Premium deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Our database has Gmx Premium's mailing address in Montabaur, Germany.
Let Postbye cancel Gmx Premium for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with Gmx Premium.
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- 2 Gmx Premium cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Gmx Premium by mail
Gather your account details
Check the account email, the plan or product name and the invoice or order number from your latest receipt before anything else. A request that does not match the account on file at Gmx Premium is the easiest one to set aside.
Put the request in writing
The request is prepared in German (template de), under the subject line “Betreff: Kündigungsanfrage – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Send it by certified mail
Send it certified to Montabaur, Germany, copying the address from the next section letter for letter, and keep the receipt slip.
Keep proof the letter arrived
File the receipt with the letter. A Gmx Premium charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Gmx Premium cancellation letter goes
Gmx Premium takes its post at Elgendorfer Straße 57, c, 56410 Montabaur, Germany, which is where a cancellation letter belongs.
Copy the postal code 56410 exactly: it is what routes the letter to Rheinland-Pfalz, Germany.
The letter is addressed “Sehr geehrte Damen und Herren,” and its details block uses the labels Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse.
Prefer to write it yourself? Use our letter template
Every address we hold for Gmx Premium, with the envelope wording
Before you cancel Gmx Premium, check these
- Annual plans can charge a cancellation fee or continue to the end of the term. Check the term on your invoice.
- Apps billed by an app store are cancelled in that store. Check which party appears on your statement.
- Team and business plans are billed per seat. Name the plan and the number of seats in the request.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Gmx Premium for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Cancelling a software or app subscription
Software plans are billed per plan or per seat, often yearly, and the app store version is billed by the store rather than the developer, so the request has to name the plan and who bills it.
If a charge shows up after you cancelled, the letter and its receipt are what you put in front of the company or your bank.
Gmx Premium cancellation at a glance
- How Gmx Premium accepts cancellations
- By mailed letter
- Mailing address on file
- Gmx Premium Elgendorfer Straße 57 c 56410 Montabaur Germany
- Country
- Germany
- Letter language
- German (template de)
- Category (from the company name)
- Software & apps
- Added to the database
- May 19, 2026
- Data last checked
