Cancel your Celside subscription by mail
To end a Celside subscription you write to them: Celside handles cancellations by post. Post for Celside is handled in Paris, France, which is where your letter is headed.
Let Postbye cancel Celside 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 Celside.
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- 2 Celside cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Celside by mail
Get your account details together
Check the name and email on the account and, if you have one, an account or customer number before anything else. A request that does not match the account on file at Celside is the easiest one to set aside.
Put the request in writing
Because Celside 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.
Post the letter
Send the letter to the Paris mailing address shown below by certified mail. Keep the tracking number safe.
File the delivery record
Keep the tracking record with your copy of the letter. If Celside bills you after the date it received the request, you have the dates to point to.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Celside cancellation letter goes
Written requests to Celside go to Avenue de la Grande Armée 69, 69 81, 75116 Paris, France.
Postal code 75116 places the address in Île-de-France, France.
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
Every address we hold for Celside, with the envelope wording
Before you cancel Celside, check these
- 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.
- Use the same name and email as on the account. A mismatch can delay the request.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Celside 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.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Celside cancellation at a glance
- How Celside accepts cancellations
- By mailed letter
- Mailing address on file
- Celside Avenue de la Grande Armée 69 69 81 75116 Paris France
- Country
- France
- Letter language
- French (template fr)
- Added to the database
- June 4, 2026
- Data last checked
