Cancel your Sickkids subscription by mail
To end a Sickkids subscription you write to them: Sickkids handles cancellations by post. Sickkids receives written requests in Toronto, Canada.
Let Postbye cancel Sickkids 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 Sickkids.
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- 3 Sickkids cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Sickkids by mail
Note your account details
You will need your donor or supporter number, the name on the donation and the amount and date of the latest payment. Use exactly the details Sickkids holds, so the request can be matched to your account.
Put the request in writing
The letter asks Sickkids to end the account, stop every future charge and confirm it in writing, under the subject line “Subject: Cancellation Request – [your name]”. Postbye fills it in from our English template.
Send the letter by certified mail
Address the envelope to Sickkids, Toronto, exactly as printed in the next section. Certified mail gives you a tracking number and a delivery record.
Save the tracking record
Keep the tracking record with your copy of the letter. If Sickkids 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 Sickkids cancellation letter goes
The mailing address we hold for Sickkids is University Avenue 555, M5G 1X8 Toronto, Canada.
Postal code M5G 1X8 places the address in Ontario, Canada.
Your details go in a block headed by Account holder, Billing address on file and Email on file, and the opening line is “To Whom It May Concern,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Sickkids, with the envelope wording
Before you cancel Sickkids, check these
- Say whether the request covers every regular gift or only one of them.
- Ask the organisation to confirm the end date in writing.
- Quote your donor or supporter number so the right gift is stopped.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Sickkids 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 regular donation
Regular donations run until the donor ends them, so a written request should give the donor reference and ask the charity to stop the payment and confirm the end date.
If a charge shows up after you cancelled, the letter and its receipt are what you put in front of the company or your bank.
Sickkids cancellation at a glance
- How Sickkids accepts cancellations
- By mailed letter
- Mailing address on file
- Sickkids University Avenue 555 M5G 1X8 Toronto Canada
- Country
- Canada
- Letter language
- English (template en-generic)
- Category (from the company name)
- Charities & donations
- Added to the database
- May 19, 2026
- Data last checked
