Cancel your Unadev subscription by mail
To end a Unadev subscription you write to them: Unadev handles cancellations by post. Letters to Unadev go to Bordeaux, France.
Let Postbye cancel Unadev 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 Unadev.
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- 2 Unadev cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Unadev by mail
Start with your account details
Put your donor or supporter number, the name on the donation and the amount and date of the latest payment in front of you before you write: the request to Unadev is only as good as the details it quotes.
Put the request in writing
Unadev is based in France, so the letter goes out in French, built from our French template. Subject line: “Objet : Demande d'annulation – [your name]”. It asks for the subscription to end, for further charges to stop and for written confirmation.
Post the letter
Address the envelope to Unadev, Bordeaux, exactly as printed in the next section. Certified mail gives you a tracking number and a delivery record.
Save the tracking record
It shows the date Unadev received your letter. Check your next statement: no Unadev charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Unadev cancellation letter goes
Unadev takes its post at Rue de Cursol 12, 33000 Bordeaux, France, which is where a cancellation letter belongs.
Postal code 33000 places the address in Nouvelle-Aquitaine, France.
Inside, the salutation reads “À qui de droit,”, followed by your details under Titulaire du compte, Adresse de facturation enregistrée and E-mail enregistré.
Prefer to write it yourself? Use our letter template
Before you cancel Unadev, check these
- A direct debit can also be ended with your bank. Do both if you want to be sure.
- Say whether the request covers every regular gift or only one of them.
- Ask the organisation to confirm the end date in writing.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Unadev 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.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Unadev cancellation at a glance
- How Unadev accepts cancellations
- By mailed letter
- Mailing address on file
- Unadev Rue de Cursol 12 33000 Bordeaux 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
