Cancel your Kind Science subscription by mail
Kind Science accepts written cancellation requests by post, which makes certified mail the strongest proof that you asked. Kind Science receives written requests in El Segundo, United States.
Let Postbye cancel Kind Science 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 Kind Science.
- 4.8 from 2,931 reviews
- 2 Kind Science cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Kind Science by mail
Get your account details together
Check the name and email on the account and, if you have one, an account or customer number before anything else. A request that does not match the account on file at Kind Science is the easiest one to set aside.
Draft the request
Your Postbye letter to Kind Science asks for three things: the account closed, no further charges and a written confirmation, all under “Subject: Subscription termination – Kind Science”. It comes from our English template.
Mail it with tracking
Send it certified to El Segundo, United States, copying the address from the next section letter for letter, and keep the receipt slip.
Keep the proof of delivery
File the receipt with the letter. A Kind Science 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 Kind Science cancellation letter goes
Written requests to Kind Science go to 100 N. Pacific Coast Hwy, Suite 1600, El Segundo 90245.
ZIP code 90245 places the address in California, in the United States.
Your name, address and email appear in a short block labelled Name, Address and E-mail, under the greeting “To Whom It May Concern,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Kind Science, with the envelope wording
Before you cancel Kind Science, 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 Kind Science 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
Most subscriptions keep billing until someone tells the company to stop, and a dated letter is proof that somebody did.
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.
Kind Science's own site is kindscience.com. Check its account and billing area first to see whether the plan is billed by Kind Science itself or by a partner.
Kind Science cancellation at a glance
- How Kind Science accepts cancellations
- By mailed letter
- Mailing address on file
- Kind Science 100 N. Pacific Coast Hwy Suite 1600 El Segundo 90245
- Country
- United States
- Letter language
- English (template en)
- Website
- kindscience.com
- Added to the database
- August 21, 2026
- Data last checked
