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Artem Kirsov2021-04-15 15:46:06
Viber
Artem Kirsov, 2021-04-15 15:46:06

Determine whether a client has Viber or Telegram by phone number?

Good day!
There is a base of clients with phones. What methods are there to determine if there is a user with such a number in Viber or Telegram?
To send further announcements and offers?

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DevMan, 2021-04-15
@Artur3194

ask the client. also obtain his consent to the mailing list.

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