Cancel your Asstel subscription by mail
To end a Asstel subscription you write to them: Asstel handles cancellations by post. Post for Asstel is handled in Köln, Germany, which is where your letter is headed.
Let Postbye cancel Asstel 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 Asstel.
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- 3 Asstel cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Asstel by mail
Collect the details you need
Before writing, collect the name and email on the account and, if you have one, an account or customer number. Asstel can only act on a request it can match to an account.
Set out the request
Because Asstel is dealt with in German, the letter is written in German (template de). Subject: “Betreff: Kündigungsanfrage – [your name]”. It requests an end to the subscription and to every further charge, plus written confirmation.
Post the letter
Send the letter to the Köln mailing address shown below by certified mail. Keep the tracking number safe.
Keep the delivery receipt
The receipt dates your request. Look at your next statement for any Asstel charge after that date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Asstel cancellation letter goes
Asstel lists Berlin-Kölnische Allee 2-4, 50969 Köln, Germany as its mailing address.
The postcode 50969 belongs to Nordrhein-Westfalen, Germany, so this is where the envelope is delivered.
Your details go in a block headed by Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse, and the opening line is “Sehr geehrte Damen und Herren,”.
Prefer to write it yourself? Use our letter template
Before you cancel Asstel, check these
- Cancelling usually ends access at the end of the period you paid for, so you keep what you paid for until then.
- Use the same name and email as on the account. A mismatch can delay the request.
- Check your next statement: no charge should appear after the cancellation date.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Asstel 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.
How cancelling by mail works
Most subscriptions keep billing until someone tells the company to stop, and a dated letter is proof that somebody did.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Asstel cancellation at a glance
- How Asstel accepts cancellations
- By mailed letter
- Mailing address on file
- Asstel Berlin-Kölnische Allee 2-4 50969 Köln Germany
- Country
- Germany
- Letter language
- German (template de)
- Added to the database
- May 19, 2026
- Data last checked
