Cancel your Base subscription by mail
Base deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Letters to Base go to Strasbourg, France.
Let Postbye cancel Base 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 Base.
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- 2 Base cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Base by mail
Find your account details
Before writing, collect the name and email on the account and, if you have one, an account or customer number. Base can only act on a request it can match to an account.
Set out the request
Postbye writes the letter in French from our French template, because Base's address is in France. It opens with the subject line “Objet : Demande d'annulation – [your name]” and asks Base to end the subscription, stop all further charges and confirm in writing.
Mail the letter with a receipt
Post it by certified mail to Base in Strasbourg, France, using the exact address below, and note the tracking number.
Hold on to the receipt
The receipt dates your request. Look at your next statement for any Base charge after that date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Base cancellation letter goes
Base takes its post at Rue Jacobi-Netter 13, 67200 Strasbourg, France, which is where a cancellation letter belongs.
The postcode 67200 belongs to Grand Est, France, so this is where the envelope is delivered.
The letter is addressed “À qui de droit,” and its details block uses 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 Base, 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 Base 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.
If a charge shows up after you cancelled, the letter and its receipt are what you put in front of the company or your bank.
Base cancellation at a glance
- How Base accepts cancellations
- By mailed letter
- Mailing address on file
- Base Rue Jacobi-Netter 13 67200 Strasbourg France
- Country
- France
- Letter language
- French (template fr)
- Added to the database
- May 19, 2026
- Data last checked
