Where to send your Aon cancellation letter
Read the addresses on this page next to the full guide to cancelling Aon.
The addresses we hold
The address a cancellation letter to Aon needs, and every other address we hold, starting in Rotterdam: copy the lines exactly and the envelope sorts itself.
Where the letter goesMailing address
AonPostbus 5183000 AM RotterdamNetherlandsThe Netherlands address on file for Aon. Postal code 3000 AM.
How to address the envelope
Write the address as printed
The front of the envelope carries Postbus 518, 3000 AM Rotterdam, Netherlands and nothing else in the address block. Check the 3000 AM digit by digit before it goes in the post.
Add the return address
Top-left, your own name and address. A return address is what the post office needs to send the letter back if Aon has moved.
Ask for certified mail
Certified, not courier: buy it at the counter, keep the postmarked slip, and the letter to Rotterdam is traceable from the article number until it is signed for.
Keep what the post office gives you
Hold on to the letter copy, the receipt and the tracking page.
The cancellation letter
A plain, dated letter to Aon asking for the cancellation, the end of every charge and written confirmation. Have the policy number, the name on the policy and the date you want cover to end to hand; our letter template fills the same shape in on screen.
[Your name] [Your street address] [City, State ZIP] [Your email address]
[Date]
Aon Postbus 518 3000 AM Rotterdam Netherlands
To whom it may concern,
I am cancelling my account with Aon, account or member number [number], with effect from [date or "immediately"]. Please end every add-on and linked plan on this account at the same time.
Please stop all future charges to my payment method, remove my stored payment details, and send written confirmation of the cancellation and its effective date to [your email address].
Sincerely, [Signature] [Your printed name]
Keep reading
The full guide to cancelling this company, our letter template and the postal guides.
Let Postbye cancel Aon 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.