Deepgram email verification with BillionVerify
Deepgram is an AI-powered speech recognition and audio intelligence platform used to transcribe, analyze, and extract insights from audio and voice data. When Deepgram workflows surface contact emails from transcripts or voice interactions, BillionVerify validates those addresses before they enter CRM systems or trigger follow-up communications.
Why verify before the send
Voice data processed by Deepgram often contains customer emails spoken aloud or extracted via NLP — formats prone to transcription errors and typos. Verifying these addresses with BillionVerify before storing or using them ensures your follow-up emails actually arrive, and prevents garbage data from accumulating in your contact records.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Deepgram sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Deepgram + BillionVerify",
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
240,
300
],
"name": "When clicking ‘Test workflow’"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "email-field",
"name": "email",
"value": "jane@example.com",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
460,
300
],
"name": "Get contacts"
},
{
"parameters": {
"sendTo": "={{ $json.email }}",
"subject": "Message for Deepgram contacts",
"message": "Replace this Gmail send with your Deepgram node — only deliverable, verified contacts reach it.",
"options": {}
},
"type": "n8n-nodes-base.gmail",
"typeVersion": 2.1,
"position": [
900,
300
],
"name": "Send email",
"webhookId": "",
"credentials": {
"gmailOAuth2": {
"id": "",
"name": "Gmail account"
}
}
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
540,
300
],
"name": "Verify Email (BillionVerify)",
"credentials": {
"billionVerifyApi": {
"id": "",
"name": "BillionVerify account"
}
}
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "is-deliverable",
"leftValue": "={{ $json.is_deliverable }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
]
}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
720,
300
],
"name": "IF deliverable"
}
],
"connections": {
"When clicking ‘Test workflow’": {
"main": [
[
{
"node": "Get contacts",
"type": "main",
"index": 0
}
]
]
},
"Get contacts": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"Verify Email (BillionVerify)": {
"main": [
[
{
"node": "IF deliverable",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable": {
"main": [
[
{
"node": "Send email",
"type": "main",
"index": 0
}
],
[]
]
}
},
"settings": {
"executionOrder": "v1"
}
}Workflow templates with Deepgram
Ready-to-use workflows that verify emails before Deepgram sends.
How it works
- 1
Set up an n8n workflow or Integrately automation triggered by a Deepgram transcription completion event.
- 2
Extract the email address field from the transcript or AI-enriched output.
- 3
Send the address to BillionVerify via the n8n community node or REST API.
- 4
Receive a verdict covering syntax validity, SMTP reachability, disposable status, and catch-all risk.
- 5
Store only validated addresses in your CRM or contact system, and flag uncertain ones for human review.
When to use this
Validate emails extracted from call transcripts
When Deepgram transcribes a sales or support call and your pipeline extracts a customer email from the text, pass it to BillionVerify before saving it to your CRM. Catch transcription errors and invalid formats before they become bad data.
Screen contacts from voice-driven lead capture
If customers provide their email address verbally and Deepgram converts it to text, verify the result with BillionVerify before enrolling the contact in any email sequence. Spoken emails are especially prone to errors that BillionVerify can catch.
FAQ
Why is email verification especially important for voice-transcribed contact data?
Speech-to-text systems can mishear or misformat email addresses. BillionVerify catches these errors at the syntax and SMTP level before they produce undeliverable contacts.
How does BillionVerify integrate with Deepgram workflows?
Via the BillionVerify n8n community node, Integrately's 1-click setup, or direct REST API calls you can insert anywhere in a Deepgram-triggered automation.
What is SMTP verification and why does it matter?
SMTP verification checks with the recipient's mail server to confirm a mailbox exists, going beyond simple format checks to catch addresses that look valid but will bounce.
Can I verify emails in real time as Deepgram processes audio?
Yes. BillionVerify's single-address API responds in under a second, making it practical to verify extracted emails immediately after a transcription job completes.
Verify emails in Deepgram
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