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Two-Factor Authentication with ClickSend Voice Calls and Email Verification

by Amit Mehtaadapted from n8n official workflow galleryUpdated Aug 2026
RequiresCCodeHTTP RequestHTTP RequestSend EmailSend Email
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HRSend VoiceFoOn form submissionOn form submiss…ESSend EmailCoCode for voiceSeSet voice codeFoVerify voice codeVerify voice co…FoFail voice codeSeSet email codeFoVerify email codeVerify email co…IfIs email code correct?Is email code c…IfIs voice code correct?Is voice code c…FoSuccessFoFail email code123456789101112
1/5
STEPS · 12
Starts on an incoming request

N8N Workflow: Send and Check TTS (Text-to-speech) Voice Calls with Email Verification This workflow automates a two-factor verification process using a voice call and an email. It is designed to send a text-to-speech (TTS) voice call with a verification code and, upon successful voice verification, to send an email with a second verification code. How it Works This workflow automates the process of sending voice calls for verification and combines it with email verification. It uses the ClickSend API for the voice call and an SMTP integration for sending the email. Use Cases Two-factor authentication (2FA) for user registration or login. Automated verification for phone numbers and email addresses. Building a custom verification system for web applications. Setup Instructions ClickSend API: Register on ClickSend and obtain your API Key. In the Send Voice node, create a Basic Auth credential using your ClickSend username and API Key as the password. SMTP Credentials: In the Send Email node, you must set up your SMTP credentials for the sender's email. Workflow Logic Trigger: The workflow is started by submitting a form.

Tags

n8nreference-onlyemail-send
Connects
CCodeWHTTP RequestsendemailSend Email
CategoryEmail Send
Triggermanual
Complexitycomplex
Nodes13
AddedSep 18, 2025

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