@vladimir-upirov @sergey.kuk Thank you guys.
It works fine, but there is a problem that in my user table, the identity is the phone number I posted a topic for it:
So the verification email not received, code:
const appId = 'YOUR_API_KEY'
const apiKey = 'YOUR_API_KEY'
const baseUrl = `http://api.backendless.com/${appId}/${apiKey}`
const emailConfirmationUrl = await
Backendless.Request.post(`${baseUrl}/users/createEmailConfirmationURL/${ phone }`)
const resendEmailConfirmation = await
Backendless.Request.post(`${baseUrl}/users/resendconfirmation/${ phone }`)
Result: when editing email, the user status become EMAIL_CONFIRMATION_PENDING, the email confirmation not sent to the specific user