FlashCall authorization

Send passwords to your clients via incoming calls.

ImLink offers FlashCall — a service for delivery one-time passwords in a phone number. It is an affordable alternative to SMS messaging. FlashCall is 5 times more profitable than SMS.

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A modern and profitable two-factor authorization method with a number of significant advantages. It allows sending a confirmation code to the subscriber via incoming call.

Benefits of FlashCall


Instant authorization


A subscriber easily gets the code


One price for all operators


Delivery guarantee


Simple API integration

Activate FlashCall
in 5 minutes

ImLink manager will contact you to get the details and create an account in the platform.

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    High cost efficiency and safety in one service

    Flashcall — one-time password given in the last four digits of an incoming call number. It may be applied for user authentication. Sending a password via incoming call is much more profitable than using messengers. A large amount of calls guarantees reliable protection of subscribers' personal data.

    Unique advantages

    Real cost optimization

    FlashCall integration reduces the cost of password sending by 5 times as compared to SMS. The price does not depend on a subscriber's operator.

    Fast implementation

    If you use SMS, we will provide an instant migration to FlashCall.


    We provide a large number of calls and guarantee the service protection from code selection.

    Minimum requirements

    For successful call authorization you need nothing but a subscriber's mobile phone operating on the GSM.

    Simple API

    We keep popular Protocols and provide detailed documentation. Service implementation and testing do not require time.

    cascade cascade

    Cascade messaging

    Set up messaging cascading via all provided channels (such as FlashCall, WhatsApp, Viber, SMS)

    Benefits of Cascade messaging:

    • Cost optimization. You can save up to 70%
    • Use of all multimedia possibilities in one bulking session

    The system analyzes the contact base and send messages via the most profitable channel. Single API to reach your goals.

    Communication channels

    ImLink offers a messaging platform via various communication channels. Interact with your customers in a convenient format. Reliability, flexibility and benefits are our top priorities.

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    Get a quote

    Please leave your contact details. Our manager will contact you and provide with a detailed description of the features and prices of our platform