Cancel your Nine9 subscription by mail
Nine9 deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. The cancellation address on file for Nine9 is in Birmingham, United States.
Let Postbye cancel Nine9 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 Nine9.
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- 2 Nine9 cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Nine9 by mail
Find your account details
You will need the name and email on the account and, if you have one, an account or customer number. Use exactly the details Nine9 holds, so the request can be matched to your account.
Put the request in writing
State plainly that you want the Nine9 account cancelled, further charges stopped and a written confirmation sent to you. Postbye sets this out in a ready English template (“Subject: Subscription termination – Nine9”).
Mail the letter with a receipt
Use certified mail for the 48009 Birmingham address in the next section, so the post office records the delivery. Write down the tracking number.
Hold on to the receipt
Keep the tracking record with your copy of the letter. If Nine9 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 Nine9 cancellation letter goes
Nine9 takes its post at North Old Woodward Avenue 640, Suite 301, Birmingham 48009, which is where a cancellation letter belongs.
ZIP code 48009 places the address in Michigan, in the United States.
The letter is addressed “To Whom It May Concern,” and its details block uses the labels Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Before you cancel Nine9, check these
- Look for annual or multi-month plans. A plan paid in advance usually runs to the end of the period you paid for.
- Write well before the next billing date. A request that arrives after it can leave one more charge on your statement.
- If an app store or phone carrier bills you, the company cannot cancel it. Cancel with that partner as well.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Nine9 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.
How cancelling by mail works
A subscription ends when the company records your request, not when you stop using it, and a letter is the record you can show later.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Nine9 cancellation at a glance
- How Nine9 accepts cancellations
- By mailed letter
- Mailing address on file
- Nine9 North Old Woodward Avenue 640 Suite 301 Birmingham 48009
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- May 19, 2026
- Data last checked
