Cancel your OSDE subscription by mail
For OSDE the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Post for OSDE is handled in Buenos Aires, Argentina, which is where your letter is headed.
Let Postbye cancel OSDE 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 OSDE.
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- 3 OSDE cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel OSDE by mail
Gather your account details
Start with the member or policy number, the full name of the policyholder and the date you want the plan to end, so the request to OSDE names the right account the first time.
Write the cancellation request
Postbye drafts the request in Latin American Spanish, the language of Argentina, with “Asunto: Solicitud de cancelación – [your name]” as the subject line. It asks OSDE to close the subscription, stop billing and confirm in writing.
Post the letter
Address the envelope to OSDE, Buenos Aires, exactly as printed in the next section. Certified mail gives you a tracking number and a delivery record.
Keep the delivery receipt
Once the letter is delivered, the date on the receipt is the date OSDE 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 OSDE cancellation letter goes
The mailing address we hold for OSDE is Av. Leandro N. Alem 1067, Piso 9, C1001AAF Buenos Aires, Argentina.
Buenos Aires is the delivery town, Argentina; the postal code to quote is C1001AAF.
The letter greets the reader with “A quien corresponda:”; your own details sit under 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 OSDE, check these
- Claims for care received before the end date can still be processed. Ask how to submit them after you cancel.
- Do not cancel until your next plan is active. A gap in cover can mean you pay for care yourself.
- Plans often end on the last day of the month. Ask which end date applies to a request sent today.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel OSDE 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 health insurance plan
Health plans end on set dates and often cover a whole household, so the request has to name the plan, every person on it and the date cover should stop, with new cover lined up first.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
OSDE cancellation at a glance
- How OSDE accepts cancellations
- By mailed letter
- Mailing address on file
- OSDE Av. Leandro N. Alem 1067 Piso 9 C1001AAF Buenos Aires Argentina
- Country
- Argentina
- Letter language
- Latin American Spanish (template es-419)
- Category (from the company name)
- Health insurance
- Added to the database
- October 13, 2026
- Data last checked
