Cancel your Cosmosdirekt subscription by mail
To end a Cosmosdirekt subscription you write to them: Cosmosdirekt handles cancellations by post. Our database has Cosmosdirekt's mailing address in Saarbrücken, Germany.
Let Postbye cancel Cosmosdirekt 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 Cosmosdirekt.
- 4.8 from 2,931 reviews
- 3 Cosmosdirekt cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Cosmosdirekt by mail
Start with your account details
Cosmosdirekt will look your account up from what the letter says, so check the name and email on the account and, if you have one, an account or customer number first.
Set out the request
Cosmosdirekt is based in Germany, so the letter goes out in German, built from our German template. Subject line: “Betreff: Kündigungsanfrage – [your name]”. It asks for the subscription to end, for further charges to stop and for written confirmation.
Send the letter by certified mail
Use certified mail for the 66121 Saarbrücken address in the next section, so the post office records the delivery. Write down the tracking number.
File the delivery record
The receipt dates your request. Look at your next statement for any Cosmosdirekt charge after that date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Cosmosdirekt cancellation letter goes
Written requests to Cosmosdirekt go to Halbergstraße 50-60, 66121 Saarbrücken, Germany.
Postal code 66121 places the address in Saarland, Germany.
Your name, address and email appear in a short block labelled Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse, under the greeting “Sehr geehrte Damen und Herren,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Cosmosdirekt, with the envelope wording
Before you cancel Cosmosdirekt, check these
- Check your next statement: no charge should appear after the cancellation date.
- Look for annual or multi-month plans. A plan paid in advance usually runs to the end of the period you paid for.
- Write well before the next billing date. A request that arrives after it can leave one more charge on your statement.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Cosmosdirekt 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.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Cosmosdirekt cancellation at a glance
- How Cosmosdirekt accepts cancellations
- By mailed letter
- Mailing address on file
- Cosmosdirekt Halbergstraße 50-60 66121 Saarbrücken Germany
- Country
- Germany
- Letter language
- German (template de)
- Added to the database
- May 19, 2026
- Data last checked
