Cancel your Sonne International subscription by mail
Sonne International takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. Our database has Sonne International's mailing address in Vienna, Austria.
Let Postbye cancel Sonne International 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 Sonne International.
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- 2 Sonne International cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Sonne International by mail
Find your account details
Start with the name and email on the account and, if you have one, an account or customer number, so the request to Sonne International names the right account the first time.
Put the request in writing
Postbye drafts the request in German, the language of Austria, with “Betreff: Kündigungsanfrage – [your name]” as the subject line. It asks Sonne International to close the subscription, stop billing and confirm in writing.
Send it by certified mail
Send it certified to Vienna, Austria, copying the address from the next section letter for letter, and keep the receipt slip.
File the delivery record
It shows the date Sonne International received your letter. Check your next statement: no Sonne International charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Sonne International cancellation letter goes
The mailing address we hold for Sonne International is Franzosengraben 2/EG/04, SONNE – International, 1030 Vienna, Austria.
The postcode 1030 belongs to Vienna, Austria, so this is where the envelope is delivered.
The letter greets the reader with “Sehr geehrte Damen und Herren,”; your own details sit under the labels Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse.
Prefer to write it yourself? Use our letter template
Every address we hold for Sonne International, with the envelope wording
Before you cancel Sonne International, check these
- Cancelling usually ends access at the end of the period you paid for, so you keep what you paid for until then.
- Use the same name and email as on the account. A mismatch can delay the request.
- Check your next statement: no charge should appear after the cancellation date.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Sonne International 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 mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Sonne International cancellation at a glance
- How Sonne International accepts cancellations
- By mailed letter
- Mailing address on file
- Sonne International Franzosengraben 2/EG/04 SONNE – International 1030 Vienna Austria
- Country
- Austria
- Letter language
- German (template de)
- Added to the database
- June 19, 2026
- Data last checked
