Cancel your Ztest subscription by mail
For Ztest the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Letters to Ztest go to Barcelona, Spain.
Let Postbye cancel Ztest 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 Ztest.
- 4.8 from 2,931 reviews
- 3 Ztest cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Ztest by mail
Collect the details you need
You will need the name and email on the account and, if you have one, an account or customer number. Use exactly the details Ztest holds, so the request can be matched to your account.
Write the cancellation request
The request is prepared in Spanish (template es), under the subject line “Asunto: Solicitud de cancelación – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Post it with proof of delivery
Take the letter to the post office and ask for certified delivery to 08007 Barcelona. Keep the tracking number it gives you.
Keep proof the letter arrived
It shows the date Ztest received your letter. Check your next statement: no Ztest charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Ztest cancellation letter goes
Written requests to Ztest go to Passeig de Gràcia 59, Entresuelo 4ª, 08007 Barcelona, Spain.
The postcode 08007 belongs to Barcelona, Spain, so this is where the envelope is delivered.
The letter is addressed “A quien corresponda,” and its details block uses the labels Titular de la cuenta, Dirección de facturación registrada and Correo electrónico registrado.
Prefer to write it yourself? Use our letter template
Before you cancel Ztest, 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 Ztest 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
Subscriptions renew automatically, and a written request is the clearest record that you asked to stop it before the next billing date.
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.
Ztest cancellation at a glance
- How Ztest accepts cancellations
- By mailed letter
- Mailing address on file
- Ztest Passeig de Gràcia 59 Entresuelo 4ª 08007 Barcelona Spain
- Country
- Spain
- Letter language
- Spanish (template es)
- Added to the database
- May 6, 2026
- Data last checked
