Cancel your Cumulus Mastercard subscription by mail
To end a Cumulus Mastercard subscription you write to them: Cumulus Mastercard handles cancellations by post. Post for Cumulus Mastercard is handled in Zürich, Switzerland, which is where your letter is headed.
Let Postbye cancel Cumulus Mastercard 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 Cumulus Mastercard.
- 4.8 from 2,931 reviews
- 2 Cumulus Mastercard cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Cumulus Mastercard by mail
Note your account details
Put the last four digits of the card, the name on the account and the address the statements are sent to in front of you before you write: the request to Cumulus Mastercard is only as good as the details it quotes.
Write your request
The request is prepared in German (template de), under the subject line “Betreff: Kündigungsanfrage – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Send it by certified mail
Post it by certified mail to Cumulus Mastercard in Zürich, Switzerland, using the exact address below, and note the tracking number.
Save the tracking record
Once the letter is delivered, the date on the receipt is the date Cumulus Mastercard 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 Cumulus Mastercard cancellation letter goes
For a letter to Cumulus Mastercard, use Limmatstrasse 152, 8031 Zürich, Switzerland.
Postal code 8031 places the address in Zürich, Switzerland.
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 Cumulus Mastercard, with the envelope wording
Before you cancel Cumulus Mastercard, check these
- Move any recurring payments and subscriptions to another card, or they may fail or reappear on a replacement card.
- Unused rewards, points or cashback can be lost when the account closes. Ask what happens to them and use them first if you can.
- Ask for written confirmation that the account is closed with a zero balance, and check your next 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 Cumulus Mastercard 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 credit card
Card issuers close accounts only once the balance is settled, and recurring payments and rewards are tied to the card, so a closure request should name the account and say what should happen to each of them.
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.
Cumulus Mastercard cancellation at a glance
- How Cumulus Mastercard accepts cancellations
- By mailed letter
- Mailing address on file
- Cumulus Mastercard Limmatstrasse 152 8031 Zürich Switzerland
- Country
- Switzerland
- Letter language
- German (template de)
- Category (from the company name)
- Credit cards
- Added to the database
- May 19, 2026
- Data last checked
