Cancel your Ono subscription by mail
To end a Ono subscription you write to them: Ono handles cancellations by post. The cancellation address on file for Ono is in Madrid, Spain.
Let Postbye cancel Ono 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 Ono.
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- 2 Ono cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Ono by mail
Start with your account details
Ono will look your account up from what the letter says, so check the account number, the phone number or service address being cancelled and the name on the account first.
Write the cancellation request
Postbye drafts the request in Spanish, the language of Spain, with “Asunto: Solicitud de cancelación – [your name]” as the subject line. It asks Ono to close the subscription, stop billing and confirm in writing.
Mail it with tracking
Post it by certified mail to Ono in Madrid, Spain, using the exact address below, and note the tracking number.
File the delivery record
Keep the tracking record with your copy of the letter. If Ono bills you after the date it received the request, you have the dates to point to.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Ono cancellation letter goes
Ono can be reached by post at Avenida de América 115, 28042 Madrid, Spain.
The postcode 28042 belongs to Madrid, Spain, so this is where the envelope is delivered.
Inside, the salutation reads “A quien corresponda,”, followed by your details under Titular de la cuenta, Dirección de facturación registrada and Correo electrónico registrado.
Prefer to write it yourself? Use our letter template
Before you cancel Ono, check these
- Check for an early-termination fee or a remaining equipment balance before the cancellation date.
- If you are moving to another provider, keep the line active until the new service works, then cancel.
- Name the exact line or service address. Accounts with several lines can leave one of them running.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Ono 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 phone or internet plan
Phone and internet providers tie cancellation to contracts, equipment balances and notice periods, so the request should name the exact line or service and ask for a final bill in writing.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Ono cancellation at a glance
- How Ono accepts cancellations
- By mailed letter
- Mailing address on file
- Ono Avenida de América 115 28042 Madrid Spain
- Country
- Spain
- Letter language
- Spanish (template es)
- Category (from the company name)
- Phone & internet
- Added to the database
- May 6, 2026
- Data last checked
