Cancel your Devk subscription by mail
For Devk the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Our database has Devk's mailing address in Köln, Germany.
Let Postbye cancel Devk 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 Devk.
- 4.8 from 2,931 reviews
- 2 Devk cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Devk by mail
Start with your account details
Put the name and email on the account and, if you have one, an account or customer number in front of you before you write: the request to Devk is only as good as the details it quotes.
Prepare the letter
Postbye writes the letter in German from our German template, because Devk's address is in Germany. It opens with the subject line “Betreff: Kündigungsanfrage – [your name]” and asks Devk to end the subscription, stop all further charges and confirm in writing.
Mail the letter with a receipt
Send the letter to the Köln mailing address shown below by certified mail. Keep the tracking number safe.
Keep the delivery receipt
Delivery confirmation is your evidence that Devk was asked. Watch the next statement or two for any further Devk charge.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Devk cancellation letter goes
The mailing address we hold for Devk is Riehler Straße 190, 50735 Köln, Germany.
Copy the postal code 50735 exactly: it is what routes the letter to Nordrhein-Westfalen, Germany.
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
Before you cancel Devk, 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 Devk 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.
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.
Devk cancellation at a glance
- How Devk accepts cancellations
- By mailed letter
- Mailing address on file
- Devk Riehler Straße 190 50735 Köln Germany
- Country
- Germany
- Letter language
- German (template de)
- Added to the database
- May 19, 2026
- Data last checked
