Cancel your Yello Strom subscription by mail
To end a Yello Strom subscription you write to them: Yello Strom handles cancellations by post. The cancellation address on file for Yello Strom is in Köln, Germany.
Let Postbye cancel Yello Strom 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 Yello Strom.
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- 2 Yello Strom cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Yello Strom by mail
Find your account details
You will need the name and email on the account and, if you have one, an account or customer number. Use exactly the details Yello Strom holds, so the request can be matched to your account.
Write your request
Postbye writes the letter in German from our German template, because Yello Strom's address is in Germany. It opens with the subject line “Betreff: Kündigungsanfrage – [your name]” and asks Yello Strom to end the subscription, stop all further charges and confirm in writing.
Post the letter
Use certified mail for the 50679 Köln address in the next section, so the post office records the delivery. Write down the tracking number.
Keep the delivery receipt
The receipt dates your request. Look at your next statement for any Yello Strom charge after that date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Yello Strom cancellation letter goes
The mailing address we hold for Yello Strom is Siegburger Straße 229, 50679 Köln, Germany.
Köln is in Nordrhein-Westfalen, Germany; the postal code to quote is 50679.
Inside, the salutation reads “Sehr geehrte Damen und Herren,”, followed by your details under Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse.
Prefer to write it yourself? Use our letter template
Every address we hold for Yello Strom, with the envelope wording
Before you cancel Yello Strom, check these
- Write well before the next billing date. A request that arrives after it can leave one more charge on your statement.
- If an app store or phone carrier bills you, the company cannot cancel it. Cancel with that partner as well.
- Cancelling usually ends access at the end of the period you paid for, so you keep what you paid for until then.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Yello Strom 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 phone call leaves nothing behind; a letter leaves a copy, a date and a delivery receipt.
Yello Strom cancellation at a glance
- How Yello Strom accepts cancellations
- By mailed letter
- Mailing address on file
- Yello Strom Siegburger Straße 229 50679 Köln Germany
- Country
- Germany
- Letter language
- German (template de)
- Added to the database
- May 19, 2026
- Data last checked
