Cancel your Synthesia subscription by mail
For Synthesia the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. The cancellation address on file for Synthesia is in Dover, United States.
Let Postbye cancel Synthesia 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 Synthesia.
- 4.8 from 2,931 reviews
- 2 Synthesia cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Synthesia by mail
Start with your account details
Check the account email, the plan or product name and the invoice or order number from your latest receipt before anything else. A request that does not match the account on file at Synthesia is the easiest one to set aside.
Draft the request
The letter asks Synthesia to end the account, stop every future charge and confirm it in writing, under the subject line “Subject: Subscription termination – Synthesia”. Postbye fills it in from our English template.
Mail it with tracking
Send the letter to the Dover mailing address shown below by certified mail. Keep the tracking number safe.
Keep the delivery receipt
Delivery confirmation is your evidence that Synthesia was asked. Watch the next statement or two for any further Synthesia charge.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Synthesia cancellation letter goes
Synthesia lists Walker Road 874, C, Dover 19904 as its mailing address.
ZIP code 19904 places the address in Delaware, 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
Every address we hold for Synthesia, with the envelope wording
Before you cancel Synthesia, check these
- Apps billed by an app store are cancelled in that store. Check which party appears on your statement.
- Team and business plans are billed per seat. Name the plan and the number of seats in the request.
- Export or download your data first. Access often ends on 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 Synthesia 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 software or app subscription
Software plans are billed per plan or per seat, often yearly, and the app store version is billed by the store rather than the developer, so the request has to name the plan and who bills it.
A phone call leaves nothing behind; a letter leaves a copy, a date and a delivery receipt.
Synthesia cancellation at a glance
- How Synthesia accepts cancellations
- By mailed letter
- Mailing address on file
- Synthesia Walker Road 874 C Dover 19904
- Country
- United States
- Letter language
- English (template en)
- Category (from the company name)
- Software & apps
- Added to the database
- May 19, 2026
- Data last checked
