Cancel your 18birdies subscription by mail
18birdies deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Letters to 18birdies go to Oakland, United States.
Let Postbye cancel 18birdies 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 18birdies.
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- 2 18birdies cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel 18birdies by mail
Gather your account details
Before writing, collect the account email, the plan or product name and the invoice or order number from your latest receipt. 18birdies can only act on a request it can match to an account.
Set out the request
Postbye turns the request into a finished English letter headed “Subject: Subscription termination – 18birdies”: close the 18birdies account, stop every charge and reply in writing.
Mail it with tracking
Address the envelope to 18birdies, Oakland, exactly as printed in the next section. Certified mail gives you a tracking number and a delivery record.
Keep proof the letter arrived
It shows the date 18birdies received your letter. Check your next statement: no 18birdies charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your 18birdies cancellation letter goes
18birdies takes its post at 14th Street 505, UNIT 330, Oakland 94612, which is where a cancellation letter belongs.
ZIP code 94612 places the address in California, in the United States.
The database also lists Howard Street 301, San Francisco 94105 for 18birdies. Use the first address above unless your agreement names this one.
The letter greets the reader with “To Whom It May Concern,”; your own details sit under the labels Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Every address we hold for 18birdies, with the envelope wording
Before you cancel 18birdies, check these
- Annual plans can charge a cancellation fee or continue to the end of the term. Check the term on your invoice.
- Apps billed by an app store are cancelled in that store. Check which party appears on your statement.
- Team and business plans are billed per seat. Name the plan and the number of seats in the request.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel 18birdies 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 mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
18birdies cancellation at a glance
- How 18birdies accepts cancellations
- By mailed letter
- Mailing address on file
- 18birdies 14th Street 505 UNIT 330 Oakland 94612
- Second address on file
- 18birdies Howard Street 301 San Francisco 94105
- Country
- United States
- Letter language
- English (template en)
- Category (from the company name)
- Software & apps
- Added to the database
- May 28, 2026
- Data last checked
