Where to send your Stackup cancellation letter
Read the addresses on this page next to the full guide to cancelling Stackup.
The addresses we hold
If you are writing to Stackup, this is the page with the address on it: Toronto, M6K 1X9, plus what to write on the envelope and how to prove it arrived.
Where the letter goesMailing address
StackupAtlantic Avenue 60M6K 1X9 TorontoCanadaThe Canada address on file for Stackup. Postal code M6K 1X9.
How to address the envelope
Use the address letter for letter
The front of the envelope carries Atlantic Avenue 60, M6K 1X9 Toronto, Canada and nothing else in the address block. Check the M6K 1X9 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 Stackup has moved.
Send it certified
Take the letter to a post office counter and ask for certified mail: you get a postmarked receipt and a delivery record. Keep the tracking number and check it until it shows delivered.
File the receipt with your copy
Keep your copy of the letter, the receipt and the delivery record in one place. The delivery date is the one to quote if the account is billed again.
The cancellation letter
The request itself is short: Stackup is asked to end the account, stop the charges and confirm in writing, with the name and email on the account and, if you have one, an account or customer number where the brackets are.
[Your name] [Your street address] [City, State ZIP] [Your email address]
[Date]
Stackup Atlantic Avenue 60 M6K 1X9 Toronto Canada
To whom it may concern,
I am cancelling my account with Stackup, 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 Stackup 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.