Cancel your Sidekicker AI subscription by mail
To end a Sidekicker AI subscription you write to them: Sidekicker AI handles cancellations by post. Letters to Sidekicker AI go to Melbourne, Australia.
Let Postbye cancel Sidekicker AI 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 Sidekicker AI.
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- 2 Sidekicker AI cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Sidekicker AI by mail
Find your account details
Sidekicker AI will look your account up from what the letter says, so check the account email, the plan or product name and the invoice or order number from your latest receipt first.
Set out the request
State plainly that you want the Sidekicker AI account cancelled, further charges stopped and a written confirmation sent to you. Postbye sets this out in a ready English template (“Subject: Cancellation Request – [your name]”).
Send it by certified mail
Post it by certified mail to Sidekicker AI in Melbourne, Australia, using the exact address below, and note the tracking number.
Keep proof the letter arrived
Once the letter is delivered, the date on the receipt is the date Sidekicker AI 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 Sidekicker AI cancellation letter goes
For a letter to Sidekicker AI, use Bourke Street 696, 3000 Melbourne, Australia.
The postcode 3000 belongs to Victoria, Australia, so this is where the envelope is delivered.
The letter is addressed “To Whom It May Concern,” and its details block uses the labels Account holder, Billing address on file and Email on file.
Prefer to write it yourself? Use our letter template
Every address we hold for Sidekicker AI, with the envelope wording
Before you cancel Sidekicker AI, check these
- Team and business plans are billed per seat. Name the plan and the number of seats in the request.
- Export or download your data first. Access often ends on the cancellation date.
- Annual plans can charge a cancellation fee or continue to the end of the term. Check the term on your invoice.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Sidekicker AI 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 software or app subscription
Software plans are billed per plan or per seat, often yearly, and the app store version is billed by the store rather than the developer, so the request has to name the plan and who bills it.
A letter is the formal route: it states the request in writing, carries a date and, sent by certified mail, comes with proof of delivery.
Sidekicker AI cancellation at a glance
- How Sidekicker AI accepts cancellations
- By mailed letter
- Mailing address on file
- Sidekicker AI Bourke Street 696 3000 Melbourne Australia
- Country
- Australia
- Letter language
- English (template en-generic)
- Category (from the company name)
- Software & apps
- Added to the database
- June 30, 2026
- Data last checked
