Cancel your 99math subscription by mail
99math 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 99math go to Tallinn, Estonia.
Let Postbye cancel 99math 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.
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Postbye is not affiliated with 99math.
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- 3 99math cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel 99math by mail
Find your account details
Have the email on the account, the name of the plan or course bundle and the date of your last payment to hand. The details in the letter need to match what 99math has on file.
Put the request in writing
Ask 99math to cancel the account, stop all further charges and confirm in writing. Postbye prepares the letter from our English template, with the subject line “Subject: Cancellation Request – [your name]”.
Post it with proof of delivery
Take the letter to the post office and ask for certified delivery to 10155 Tallinn. Keep the tracking number it gives you.
File the delivery record
File the receipt with the letter. A 99math charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your 99math cancellation letter goes
The mailing address we hold for 99math is Filmi tänav 5, 10155 Tallinn, Estonia.
Tallinn is in Harju maakond, Estonia; the postal code to quote is 10155.
The database also lists Filmi tn 5-17, 10155 Tallinn, Estonia for 99math. Use the first address above unless your agreement names this one.
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
Before you cancel 99math, check these
- Family and school accounts are billed to one person. Use the name on the billing record.
- Annual plans are often non-refundable once the term starts. Check the wording.
- Download certificates or progress records first. Access can stop at the cancellation date.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel 99math 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 learning subscription
Learning platforms push annual plans and free trials that turn into paid ones, so the request should name the plan and the date the trial or term ends.
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.
99math cancellation at a glance
- How 99math accepts cancellations
- By mailed letter
- Mailing address on file
- 99math Filmi tänav 5 10155 Tallinn Estonia
- Second address on file
- 99math Filmi tn 5-17 10155 Tallinn Estonia
- Country
- Estonia
- Letter language
- English (template en-generic)
- Category (from the company name)
- Education & learning
- Added to the database
- May 28, 2026
- Data last checked
