Cancel your Source subscription by mail
To end a Source subscription you write to them: Source handles cancellations by post. Source receives written requests in Chantilly, France.
Let Postbye cancel Source 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 Source.
- 4.8 from 2,931 reviews
- 3 Source cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Source 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 Source names the right account the first time.
Prepare the letter
Because Source is dealt with in French, the letter is written in French (template fr). Subject: “Objet : Demande d'annulation – [your name]”. It requests an end to the subscription and to every further charge, plus written confirmation.
Mail the letter with a receipt
Use certified mail for the 60500 Chantilly address in the next section, so the post office records the delivery. Write down the tracking number.
Keep the delivery receipt
Once the letter is delivered, the date on the receipt is the date Source 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 Source cancellation letter goes
The mailing address we hold for Source is TSA 59013, 60500 Chantilly, France.
“TSA 59013” is a post-office box or mail-sorting line, so it takes post and not couriers: certified mail is the right way to reach it.
The letter greets the reader with “À qui de droit,”; your own details sit under the labels Titulaire du compte, Adresse de facturation enregistrée and E-mail enregistré.
Prefer to write it yourself? Use our letter template
Before you cancel Source, 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 Source 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
A subscription ends when the company records your request, not when you stop using it, and a letter is the record you can show later.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Source cancellation at a glance
- How Source accepts cancellations
- By mailed letter
- Mailing address on file
- Source TSA 59013 60500 Chantilly France
- Country
- France
- Letter language
- French (template fr)
- Added to the database
- June 4, 2026
- Data last checked
