Cancel your Sidaction subscription by mail
For Sidaction the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Sidaction receives written requests in Paris, France.
Let Postbye cancel Sidaction 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 Sidaction.
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- 3 Sidaction cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Sidaction by mail
Find your account details
Before writing, collect your donor or supporter number, the name on the donation and the amount and date of the latest payment. Sidaction can only act on a request it can match to an account.
Draft the request
The request is prepared in French (template fr), under the subject line “Objet : Demande d'annulation – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Mail the letter with a receipt
Use certified mail for the 75010 Paris address in the next section, so the post office records the delivery. Write down the tracking number.
Keep the proof of delivery
Once the letter is delivered, the date on the receipt is the date Sidaction 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 Sidaction cancellation letter goes
Sidaction lists Rue du Faubourg Saint-Martin 228, 75010 Paris, France as its mailing address.
Copy the postal code 75010 exactly: it is what routes the letter to Île-de-France, France.
Your name, address and email appear in a short block labelled Titulaire du compte, Adresse de facturation enregistrée and E-mail enregistré, under the greeting “À qui de droit,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Sidaction, with the envelope wording
Before you cancel Sidaction, check these
- Ask the organisation to confirm the end date in writing.
- Quote your donor or supporter number so the right gift is stopped.
- A direct debit can also be ended with your bank. Do both if you want to be sure.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Sidaction 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 regular donation
Regular donations run until the donor ends them, so a written request should give the donor reference and ask the charity to stop the payment and confirm the end date.
A phone call leaves nothing behind; a letter leaves a copy, a date and a delivery receipt.
Sidaction cancellation at a glance
- How Sidaction accepts cancellations
- By mailed letter
- Mailing address on file
- Sidaction Rue du Faubourg Saint-Martin 228 75010 Paris France
- Country
- France
- Letter language
- French (template fr)
- Category (from the company name)
- Charities & donations
- Added to the database
- June 4, 2026
- Data last checked
