Cancel your Brain Iq subscription by mail
Brain Iq takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. Post for Brain Iq is handled in Boise, United States, which is where your letter is headed.
Let Postbye cancel Brain Iq 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 Brain Iq.
- 4.8 from 2,931 reviews
- 2 Brain Iq cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Brain Iq by mail
Collect the details you need
Before writing, collect the name and email on the account and, if you have one, an account or customer number. Brain Iq can only act on a request it can match to an account.
Prepare the letter
The letter asks Brain Iq to end the account, stop every future charge and confirm it in writing, under the subject line “Subject: Subscription termination – Brain Iq”. Postbye fills it in from our English template.
Mail the letter with a receipt
Send the letter to the Boise mailing address shown below by certified mail. Keep the tracking number safe.
Keep proof the letter arrived
File the receipt with the letter. A Brain Iq 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 Brain Iq cancellation letter goes
Written requests to Brain Iq go to 106 N. 6th Street, Boise, ID 83716.
ZIP code 83716 is in Idaho, so the letter stays inside the United States postal system.
Your details go in a block headed by Name, Address and E-mail, and the opening line is “To Whom It May Concern,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Brain Iq, with the envelope wording
Before you cancel Brain Iq, check these
- Use the same name and email as on the account. A mismatch can delay the request.
- Check your next statement: no charge should appear after the cancellation date.
- Look for annual or multi-month plans. A plan paid in advance usually runs to the end of the period you paid for.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Brain Iq 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
Subscriptions renew automatically, and a written request is the clearest record that you asked to stop it before the next billing 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.
Brain Iq cancellation at a glance
- How Brain Iq accepts cancellations
- By mailed letter
- Mailing address on file
- Brain Iq 106 N. 6th Street Boise, ID 83716
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- July 14, 2026
- Data last checked
