Cancel your Swisscom subscription by mail
For Swisscom the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. The cancellation address on file for Swisscom is in Ittigen, Switzerland.
Let Postbye cancel Swisscom 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.
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Postbye is not affiliated with Swisscom.
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- 3 Swisscom cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Swisscom by mail
Gather your account details
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 Swisscom has on file.
Draft the request
Because Swisscom is dealt with in German, the letter is written in German (template de). Subject: “Betreff: Kündigungsanfrage – [your name]”. It requests an end to the subscription and to every further charge, plus written confirmation.
Mail the letter with a receipt
Post it by certified mail to Swisscom in Ittigen, Switzerland, using the exact address below, and note the tracking number.
Keep the delivery receipt
File the receipt with the letter. A Swisscom charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Swisscom cancellation letter goes
For a letter to Swisscom, use Alte Tiefenaustrasse 6, 3048 Ittigen, Switzerland.
Copy the postal code 3048 exactly: it is what routes the letter to Bern, Switzerland.
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 Swisscom, with the envelope wording
Before you cancel Swisscom, check these
- 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.
- Ask for a final bill in writing and return any rented equipment by tracked mail.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Swisscom 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.
Swisscom cancellation at a glance
- How Swisscom accepts cancellations
- By mailed letter
- Mailing address on file
- Swisscom Alte Tiefenaustrasse 6 3048 Ittigen Switzerland
- Country
- Switzerland
- Letter language
- German (template de)
- Category (from the company name)
- Phone & internet
- Added to the database
- June 19, 2026
- Data last checked
