Cancel your Caiway subscription by mail
Caiway takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. The cancellation address on file for Caiway is in Schiedam, Netherlands.
Let Postbye cancel Caiway 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 Caiway.
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- 3 Caiway cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Caiway by mail
Find your account details
Have the account number, the phone number or service address being cancelled and the name on the account to hand. The details in the letter need to match what Caiway has on file.
Put the request in writing
Postbye drafts the request in Dutch, the language of Netherlands, with “Onderwerp: annuleringsverzoek – [your name]” as the subject line. It asks Caiway to close the subscription, stop billing and confirm in writing.
Send the letter by certified mail
Address the envelope to Caiway, Schiedam, exactly as printed in the next section. Certified mail gives you a tracking number and a delivery record.
Hold on to the receipt
Once the letter is delivered, the date on the receipt is the date Caiway 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 Caiway cancellation letter goes
Caiway can be reached by post at Postbus 4033, 3102 GA Schiedam, Netherlands.
“Postbus 4033” is a post-office box or mail-sorting line, so it takes post and not couriers: certified mail is the right way to reach it.
Your details go in a block headed by Accounthouder, Factuuradres in dossier and E-mailadres in dossier, and the opening line is “Geachte heer/mevrouw,”.
Prefer to write it yourself? Use our letter template
Before you cancel Caiway, 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 Caiway 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.
Caiway cancellation at a glance
- How Caiway accepts cancellations
- By mailed letter
- Mailing address on file
- Caiway Postbus 4033 3102 GA Schiedam Netherlands
- Country
- Netherlands
- Letter language
- Dutch (template nl)
- Category (from the company name)
- Phone & internet
- Added to the database
- June 3, 2026
- Data last checked
