Cancel your STO Express subscription by mail
STO Express takes cancellation requests by mailed letter, so a dated certified-mail letter is the record that counts. Letters to STO Express go to Yuhuan, China.
Let Postbye cancel STO Express 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 STO Express.
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- 3 STO Express cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel STO Express by mail
Start with your account details
Have the name and email on the account and, if you have one, an account or customer number to hand. The details in the letter need to match what STO Express has on file.
Write your request
Because STO Express is dealt with in Chinese, the letter is written in Chinese (template zh). Subject: “主题：取消请求 – [your name]”. It requests an end to the subscription and to every further charge, plus written confirmation.
Post the letter
Send it certified to Yuhuan, China, copying the address from the next section letter for letter, and keep the receipt slip.
Hold on to the receipt
File the receipt with the letter. A STO Express 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 STO Express cancellation letter goes
STO Express takes its post at 浙江省玉环市机电工业园区, 317600 Yuhuan, China, which is where a cancellation letter belongs.
The envelope is going to Yuhuan in Zhejiang, China, so the postcode 317600 must be on the front.
The letter is addressed “相关负责人：” and its details block uses the labels 账户持有人, 存档的账单地址 and 存档的电子邮件地址.
Prefer to write it yourself? Use our letter template
Every address we hold for STO Express, with the envelope wording
Before you cancel STO Express, 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 STO Express 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 mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
STO Express cancellation at a glance
- How STO Express accepts cancellations
- By mailed letter
- Mailing address on file
- STO Express 浙江省玉环市机电工业园区 317600 Yuhuan China
- Country
- China
- Letter language
- Chinese (template zh)
- Added to the database
- September 29, 2026
- Data last checked
