Cancel your Soylent subscription by mail
Soylent takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. Letters to Soylent go to Los Angeles, United States.
Let Postbye cancel Soylent 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 Soylent.
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- 3 Soylent cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Soylent by mail
Note your account details
Start with the account email, the plan name and any pending order or prescription reference, so the request to Soylent names the right account the first time.
Set out the request
State plainly that you want the Soylent account cancelled, further charges stopped and a written confirmation sent to you. Postbye sets this out in a ready English template (“Subject: Subscription termination – Soylent”).
Post the letter
Send the letter to the Los Angeles mailing address shown below by certified mail. Keep the tracking number safe.
Keep proof the letter arrived
It shows the date Soylent received your letter. Check your next statement: no Soylent charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Soylent cancellation letter goes
Soylent lists 767 S. Alameda St, Los Angeles, CA 90021 as its mailing address.
ZIP code 90021 is in California, so the letter stays inside the United States postal system.
Inside, the salutation reads “To Whom It May Concern,”, followed by your details under Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Every address we hold for Soylent, with the envelope wording
Before you cancel Soylent, check these
- Ask for written confirmation, and check the next statement for further charges.
- Pending shipments or refills may already be processed. Ask what can still be stopped.
- Prescriptions are separate from the subscription. Check how to transfer or end them.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Soylent 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 health or wellness subscription
Health and wellness plans combine a monthly fee with supplies or consultations, so the request should say what to stop: the plan, pending shipments or both.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Soylent cancellation at a glance
- How Soylent accepts cancellations
- By mailed letter
- Mailing address on file
- Soylent 767 S. Alameda St Los Angeles, CA 90021
- Country
- United States
- Letter language
- English (template en)
- Category (from the company name)
- Health & wellness
- Added to the database
- April 30, 2026
- Data last checked
