Cancel your Kerfit subscription by mail
For Kerfit the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Post for Kerfit is handled in Rennes, France, which is where your letter is headed.
Let Postbye cancel Kerfit 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 Kerfit.
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- 2 Kerfit cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Kerfit by mail
Start with your account details
Start with your membership number, the home club you joined at and the name on the membership agreement, so the request to Kerfit names the right account the first time.
Write your request
Postbye drafts the request in French, the language of France, with “Objet : Demande d'annulation – [your name]” as the subject line. It asks Kerfit to close the subscription, stop billing and confirm in writing.
Mail the letter with a receipt
Send it certified to Rennes, France, copying the address from the next section letter for letter, and keep the receipt slip.
Keep the delivery receipt
Once the letter is delivered, the date on the receipt is the date Kerfit 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 Kerfit cancellation letter goes
Kerfit lists Mail François Mitterrand 4, 35000 Rennes, France as its mailing address.
Copy the postal code 35000 exactly: it is what routes the letter to Bretagne, 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
Before you cancel Kerfit, check these
- Annual fees and monthly dues are sometimes billed separately. Ask for both to be ended.
- A home club can have its own rules. Name the club in the letter so the request is not bounced between locations.
- Freezing or pausing a membership is not cancelling it. Say clearly that you want the membership ended.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Kerfit 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 gym or fitness membership
Gyms often require written notice, set a notice window before the next billing date and can tie the cancellation to the home club, so a dated letter is the record that counts.
A letter is the formal route: it states the request in writing, carries a date and, sent by certified mail, comes with proof of delivery.
Kerfit cancellation at a glance
- How Kerfit accepts cancellations
- By mailed letter
- Mailing address on file
- Kerfit Mail François Mitterrand 4 35000 Rennes France
- Country
- France
- Letter language
- French (template fr)
- Category (from the company name)
- Gyms & fitness
- Added to the database
- June 4, 2026
- Data last checked
