Cancel your Ja Mobil subscription by mail
For Ja Mobil the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Post for Ja Mobil is handled in Köln, Germany, which is where your letter is headed.
Let Postbye cancel Ja Mobil 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 Ja Mobil.
- 4.8 from 2,931 reviews
- 3 Ja Mobil cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Ja Mobil by mail
Get your account details together
Have the account number, the phone number or service address being cancelled and the name on the account to hand. The details in the letter need to match what Ja Mobil has on file.
Write the cancellation request
Postbye drafts the request in German, the language of Germany, with “Betreff: Kündigungsanfrage – [your name]” as the subject line. It asks Ja Mobil to close the subscription, stop billing and confirm in writing.
Mail the letter with a receipt
Mail the letter by certified mail to the Köln address in the next section, and keep the tracking number.
Save the tracking record
Once the letter is delivered, the date on the receipt is the date Ja Mobil was told. Compare it with your statements over the next billing cycle.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Ja Mobil cancellation letter goes
Ja Mobil can be reached by post at Weinsbergstraße 70, 50823 Köln, Germany.
Copy the postal code 50823 exactly: it is what routes the letter to Nordrhein-Westfalen, 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 Ja Mobil, with the envelope wording
Before you cancel Ja Mobil, check these
- Check for an early-termination fee or a remaining equipment balance before the cancellation date.
- If you are moving to another provider, keep the line active until the new service works, then cancel.
- Name the exact line or service address. Accounts with several lines can leave one of them running.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Ja Mobil 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 phone or internet plan
Phone and internet providers tie cancellation to contracts, equipment balances and notice periods, so the request should name the exact line or service and ask for a final bill in writing.
A letter is the formal route: it states the request in writing, carries a date and, sent by certified mail, comes with proof of delivery.
Ja Mobil cancellation at a glance
- How Ja Mobil accepts cancellations
- By mailed letter
- Mailing address on file
- Ja Mobil Weinsbergstraße 70 50823 Köln Germany
- Country
- Germany
- Letter language
- German (template de)
- Category (from the company name)
- Phone & internet
- Added to the database
- May 19, 2026
- Data last checked
