MFA Multi-factor authentication (Voice call and Email) with ClickSend and SMTP

This workflow automates the process of sending voice calls for verification purposes and combines it with email verification . It uses the ClickSend API for voice calls and integrates with SMTP for email verification.

This workflow is a powerful tool for automating phone and email verification, ensuring a seamless and secure user verification process.

Below is a breakdown of the workflow:

1. How It Works

The workflow is designed to verify a user's phone number and email address through a combination of voice calls and email verification. Here's how it works:

1. Submission Form :

   • The workflow starts with a Form Trigger node, where users submit a form with the following fields:
     • To : The recipient's phone number (including the international prefix, eg, +1xxxx).
     • Voice : The voice type (male or female).
     • Lang : The language for the voice call (eg, en-us, it-it, fr-fr, etc.).
     • Email : The recipient's email address.
     • Name : The recipient's name.

2. Set Voice Code :

   • The Set Voice Code node defines the verification code that will be spoken during the voice call.

3. Format Code for Voice :

   • The Code for Voice node formats the verification code by adding spaces between characters for better clarity during the voice call.

4. Send Voice Call :

   • The call includes the verification code, which is read aloud to the recipient.

5. Verify Voice Code :

   • The Verify Voice Code node prompts the user to enter the code they received via the voice call.
   • The Is Voice Code Correct? node checks if the entered code matches the predefined code.
     • If correct, the workflow proceeds to email verification.
     • If incorrect, the user is notified of the failure.

6. Set Email Code :

   • The Set Email Code node defines the verification code that will be sent via email.

7. Send Email :

   • The Send Email node sends an email to the recipient with the verification code using SMTP .

8. Verify Email Code :

   • The Verify Email Code node prompts the user to enter the code they received via email.
   • The Is Email Code Correct? node checks if the entered code matches the predefined code.
     • If correct, the user is notified of successful verification.
     • If incorrect, the user is notified of the failure.

2. Setup Steps

To set up and use this workflow in n8n, follow these steps:

1. ClickSend API Key :

   • Create an account on ClickSend and obtain your API Key .
   • In the Send Voice node, set up HTTP Basic Authentication :
     • Username : Use the username you registered with on ClickSend.
     • Password : Use the API Key provided by ClickSend.

2. SMTP Configuration :

   • Set up SMTP credentials in n8n for the Send Email node.
   • Ensure the SMTP server is configured to send emails from the specified email address.

3. Form Configuration :

   • The Form Trigger node is pre-configured with fields for:
     • To : The recipient's phone number.
     • Voice : Choose between male or female voice.
     • Lang : Select the language for the voice call.
     • Email : The recipient's email address.
     • Name : The recipient's name.
   • Customize the form fields if needed.

4. Set Verification Codes :

   • In the Set Voice Code node, define the verification code that will be spoken during the voice call.
   • In the Set Email Code node, define the verification code that will be sent via email.

5. Test the Workflow :

   • Submit the form with the required details (phone number, voice, language, email, and name).
   • The workflow will:
     • Send a voice call with the verification code.
     • Prompt the user to verify the code.
     • Send an email with the verification code.
     • Prompt the user to verify the email code.
     • Notify the user of success or failure.

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