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ChatGPT email verification with BillionVerify
ChatGPT is an AI assistant used by teams to draft content, build internal tools, and automate knowledge workflows. When ChatGPT-powered automations collect or process email addresses, connecting BillionVerify via n8n or the REST API ensures those addresses are real and deliverable before any outreach or storage happens.
Why verify before the send
AI workflows that generate or collect email addresses have no built-in mechanism to confirm those addresses actually exist. Sending to unverified AI-sourced or user-submitted emails risks bounces, spam complaints, and domain reputation damage. BillionVerify adds a verification step so your AI pipelines only act on addresses that are safe to contact.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before ChatGPT sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key. Adapted from this n8n template
verify-emails-in-chatgpt.json
{
"name": "Automate lead nurturing with ChatGPT-4o & Gemini for personalized email drafting + BillionVerify",
"nodes": [
{
"id": "4bc99fef-d397-4a39-9133-527133487d3f",
"name": "Get row(s) in sheet",
"type": "n8n-nodes-base.googleSheets",
"position": [
1440,
-16
],
"parameters": {
"options": {},
"filtersUI": {
"values": [
{
"lookupValue": "=To send",
"lookupColumn": "Status"
},
{
"lookupValue": "To Send",
"lookupColumn": "Status"
}
]
},
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit#gid=0",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit?usp=drivesdk",
"cachedResultName": "Course 2 - S4Lec1-Lead generation and nurturing"
},
"combineFilters": "OR"
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "credential-id",
"name": "googleSheetsOAuth2Api Credential"
}
},
"typeVersion": 4.7
},
{
"id": "aeb0cb22-8dc5-4acf-b879-98280066e068",
"name": "Introductory email ",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
1616,
-16
],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "chatgpt-4o-latest",
"cachedResultName": "CHATGPT-4O-LATEST"
},
"options": {},
"messages": {
"values": [
{
"role": "assistant",
"content": "You are a helpful B2B marketing assistant who will write introductory email to potential leads."
},
{
"role": "system",
"content": "=Write an introductory email using below template. Use the information provided below.\n\nFirst name - {{ $json[\"First Name\"] }}\nCompany name - {{ $json[\"Company Name\"] }}\nCompany information - {{ $json[\"Company Information\"] }}\nMessage - {{ $json.Message }}\nEmail Id - {{ $json[\"Email ID\"] }}\nRead the message and understand pain points in painPoints\nGive response in two variables\nEmailSubject = email subject\nEmailContent = email content\n\nbelow is the template.\n\nSubject: Following up on your interest in <your company name> for [ shorter version of pain point]\nHi [ first name ]\nThanks for reaching out to us. I saw you were interested in improving [ pain points from message], and as a business leader, I know how critical that is. \n\nOur work with companies of a similar size to yours, like [company name], shows that BuildMyAIFlow can provide solutions specifically for your challenges. \n\nLet me know if you'd be open to a 15-minute chat next week to discuss how we can specifically help you improve your team's efficiency.\n\nps - [ write one line about something relevant that Ai automation did for a similar company in this domain]\n\nBest,\nAashish Bhatnagar\n"
},
{
"content": "Write an introductory email using below template. Use the information provided below.\n\nFirst name - {{ $json[\"First Name\"] }}\nCompany name - {{ $json[\"Company Name\"] }}\nCompany information - {{ $json[\"Company Information\"] }}\nMessage - {{ $json.Message }}\nEmail Id - {{ $json[\"Email ID\"] }}\nRead the message and understand pain points in painPoints\n\nGive response in two variables\nEmailSubject = email subject\nEmailContent = email content\nEmailid = Email id\nbelow is the template.\n\nSubject: Following up on your interest in BuildMyAiFlow for [ shorter version of pain point]\nHi [ first name ]\nThanks for reaching out to us. I saw you were interested in improving [ pain points from message], and as a business leader, I know how critical that is. \n\nOur work with companies of a similar size to yours, like [company name], shows that BuildMyAIFlow can provide solutions specifically for your challenges. \n\nLet me know if you'd be open to a 15-minute chat next week to discuss how we can specifically help you improve your team's efficiency.\n\nps - [ write one line about something relevant that Ai automation did for a similar company in this domain]\n\nBest,\n<your sales team>"
}
]
},
"jsonOutput": true
},
"credentials": {
"openAiApi": {
"id": "credential-id",
"name": "openAiApi Credential"
}
},
"typeVersion": 1.8
},
{
"id": "63d74ffa-7991-444f-8f41-4bca79f13bd3",
"name": "Create a draft",
"type": "n8n-nodes-base.gmail",
"position": [
1968,
-16
],
"webhookId": "473664ef-5a8f-4de7-b37a-a9502a365a9f",
"parameters": {
"message": "={{ $json.message.content.EmailContent }}",
"options": {
"sendTo": "={{ $json.message.content.Emailid }}"
},
"subject": "={{ $json.message.content.EmailSubject }}",
"resource": "draft"
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 2.1
},
{
"id": "67b166bf-90da-4d11-a351-458e2a913022",
"name": "Append or update row in sheet",
"type": "n8n-nodes-base.googleSheets",
"position": [
2176,
-16
],
"parameters": {
"columns": {
"value": {
"Status": "Drafted",
"Email ID": "={{ $('Introductory email ').item.json.message.content.Emailid }}",
"Intro email Date": "={{ $now }}"
},
"schema": [
{
"id": "First Name",
"type": "string",
"display": true,
"required": false,
"displayName": "First Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Last Name",
"type": "string",
"display": true,
"required": false,
"displayName": "Last Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Email ID",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Email ID",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Company Name",
"type": "string",
"display": true,
"required": false,
"displayName": "Company Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Company Information",
"type": "string",
"display": true,
"required": false,
"displayName": "Company Information",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Designation",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Designation",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Message",
"type": "string",
"display": true,
"required": false,
"displayName": "Message",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Location",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Location",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Status",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Status",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Intro email Date",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Intro email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 1 needed?",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Reminder 1 needed?",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 1 Email Date",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Reminder 1 Email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 2 needed? ",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Reminder 2 needed? ",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 2 Email Date",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Reminder 2 Email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [
"Email ID"
],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "appendOrUpdate",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit#gid=0",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit?usp=drivesdk",
"cachedResultName": "Course 2 - S4Lec1-Lead generation and nurturing"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "credential-id",
"name": "googleSheetsOAuth2Api Credential"
}
},
"typeVersion": 4.7
},
{
"id": "2506d795-0769-44c3-aae4-73dac74c2524",
"name": "On form submission",
"type": "n8n-nodes-base.formTrigger",
"position": [
-112,
-160
],
"webhookId": "2fc4b8f4-3ecc-4d68-b12b-29ecae66b3c1",
"parameters": {
"options": {
"buttonLabel": "Let's talk"
},
"formTitle": "Let's Talk AI marketing automation",
"formFields": {
"values": [
{
"fieldLabel": "First name",
"placeholder": "John",
"requiredField": true
},
{
"fieldLabel": "Last Name",
"placeholder": "Wick",
"requiredField": true
},
{
"fieldLabel": "Company name",
"placeholder": "Acme Corporation",
"requiredField": true
},
{
"fieldLabel": "Designation",
"placeholder": "Manager"
},
{
"fieldType": "email",
"fieldLabel": "Email Id",
"placeholder": "user@example.com",
"requiredField": true
},
{
"fieldType": "textarea",
"fieldLabel": "Message",
"placeholder": "Leave your message here",
"requiredField": true
}
]
},
"formDescription": "Lead Capture Form"
},
"typeVersion": 2.2
},
{
"id": "1fedbddc-0fe2-4c98-a5d4-8d2f058f7072",
"name": "Append row in sheet",
"type": "n8n-nodes-base.googleSheets",
"position": [
96,
-160
],
"parameters": {
"columns": {
"value": {
"Status": "To Send",
"Message": "={{ $json.Message }}",
"Email ID": "={{ $json[\"Email Id\"] }}",
"Last Name": "={{ $json[\"Last Name\"] }}",
"First Name": "={{ $json[\"First name\"] }}",
"Designation": "={{ $json.Designation }}",
"Company Name": "={{ $json['Company name'] }}"
},
"schema": [
{
"id": "First Name",
"type": "string",
"display": true,
"required": false,
"displayName": "First Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Last Name",
"type": "string",
"display": true,
"required": false,
"displayName": "Last Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Email ID",
"type": "string",
"display": true,
"required": false,
"displayName": "Email ID",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Company Name",
"type": "string",
"display": true,
"required": false,
"displayName": "Company Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Company Information",
"type": "string",
"display": true,
"required": false,
"displayName": "Company Information",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Designation",
"type": "string",
"display": true,
"required": false,
"displayName": "Designation",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Message",
"type": "string",
"display": true,
"required": false,
"displayName": "Message",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Location",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Location",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Status",
"type": "string",
"display": true,
"required": false,
"displayName": "Status",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Intro email Date",
"type": "string",
"display": true,
"required": false,
"displayName": "Intro email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 1 needed?",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 1 needed?",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 1 Email Date",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 1 Email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 2 needed? ",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 2 needed? ",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 2 Email Date",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 2 Email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "append",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit#gid=0",
"cachedResultName": "Form Filled"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit?usp=drivesdk",
"cachedResultName": "Course 2 - S4Lec1-Lead generation and nurturing"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "credential-id",
"name": "googleSheetsOAuth2Api Credential"
}
},
"typeVersion": 4.7
},
{
"id": "6752c1fd-613e-4ccc-873d-9c7eaa2383b2",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
304,
-160
],
"parameters": {
"text": "=Search online and write 2-3 sentences about the company - {{ $json['Company Name'] }}\nCapture as to what they do.\nCapture the location of closes office.\nGive output in below format\n\nCompanyDescription - 1-2 sentences\nCompanyLocation - Should be either of these - Delhi/NCR, bangalore, Mumbai, Other",
"options": {},
"promptType": "define"
},
"typeVersion": 2.2
},
{
"id": "6985895b-6d39-4bc2-b60f-0dc28f7680db",
"name": "Google Gemini Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
272,
144
],
"parameters": {
"options": {}
},
"credentials": {
"googlePalmApi": {
"id": "credential-id",
"name": "googlePalmApi Credential"
}
},
"typeVersion": 1
},
{
"id": "aaae2203-4c85-426f-9a96-beea3d6caa7a",
"name": "HTTP Request",
"type": "n8n-nodes-base.httpRequestTool",
"position": [
464,
48
],
"parameters": {
"url": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('URL', ``, 'string') }}",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "b4355e6a-8119-4e6f-b8a9-3617d220872b",
"name": "Code",
"type": "n8n-nodes-base.code",
"position": [
656,
-160
],
"parameters": {
"jsCode": "const inputText = $input.first().json.output\n\n// Split by \"Company Location\"\nconst parts = inputText.split(\"Company Location\");\n\n// Extract description (remove \"Company Description -\" prefix)\nconst companyDescription = parts[0]\n .replace('Company Description -', '')\n .replace(/\\\\n/g, ' ')\n .trim();\n\n// Extract location (remove \"-\" prefix)\nconst companyLocation = parts[1]\n ? parts[1].replace('-', '').replace(/\\\\n/g, ' ').trim()\n : '';\n\nreturn {\n ...($json),\n companyDescription: companyDescription,\n companyLocation: companyLocation\n};"
},
"typeVersion": 2
},
{
"id": "a1de561e-c54f-4bc0-8216-d251e3def12e",
"name": "Update row in sheet",
"type": "n8n-nodes-base.googleSheets",
"position": [
864,
-160
],
"parameters": {
"columns": {
"value": {
"Email ID": "={{ $('On form submission').item.json['Email Id'] }}",
"Location": "={{ $json.companyLocation }}",
"Company Information": "={{ $json.companyDescription }}"
},
"schema": [
{
"id": "First Name",
"type": "string",
"display": true,
"removed": true,
"required": false,
"displayName": "First Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Last Name",
"type": "string",
"display": true,
"removed": true,
"required": false,
"displayName": "Last Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Email ID",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Email ID",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Company Name",
"type": "string",
"display": true,
"removed": true,
"required": false,
"displayName": "Company Name",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Company Information",
"type": "string",
"display": true,
"required": false,
"displayName": "Company Information",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Designation",
"type": "string",
"display": true,
"required": false,
"displayName": "Designation",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Message",
"type": "string",
"display": true,
"required": false,
"displayName": "Message",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Location",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Location",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Status",
"type": "string",
"display": true,
"required": false,
"displayName": "Status",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Intro email Date",
"type": "string",
"display": true,
"required": false,
"displayName": "Intro email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 1 needed?",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 1 needed?",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 1 Email Date",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 1 Email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 2 needed? ",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 2 needed? ",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Reminder 2 Email Date",
"type": "string",
"display": true,
"required": false,
"displayName": "Reminder 2 Email Date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "row_number",
"type": "number",
"display": true,
"removed": true,
"readOnly": true,
"required": false,
"displayName": "row_number",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [
"Email ID"
],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "update",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit#gid=0",
"cachedResultName": "Form Filled"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1ZG7J29NF134RxUKbTTmTi3A0uBD0gIi7qccrr3sdHWQ/edit?usp=drivesdk",
"cachedResultName": "Course 2 - S4Lec1-Lead generation and nurturing"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "credential-id",
"name": "googleSheetsOAuth2Api Credential"
}
},
"typeVersion": 4.7
},
{
"id": "95d73f08-5917-4bf4-88de-401815f470ba",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-224,
-256
],
"parameters": {
"width": 1392,
"height": 544,
"content": "## Lead Collection form\n**The step is optional.** The AI agent searches details and location about the lead for assistance. "
},
"typeVersion": 1
},
{
"id": "f4021014-9e6d-4f1e-8c01-1695a2284a57",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
1200,
-256
],
"parameters": {
"color": 4,
"width": 1392,
"height": 544,
"content": "## Introductory Email Drafting and sheet updation\n**Must know below details.** \n1- Email would be kept in draft and not sent\n2- Best practice to add auto-signature in email account used for gmail\n3- Update agent prompt to teach about your company for best result."
},
"typeVersion": 1
},
{
"id": "05ebace2-b7b3-4c10-b694-95e023eabd0a",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-224,
-720
],
"parameters": {
"width": 432,
"height": 448,
"content": "## Main Sticky\n**How it works** \nPhase 1\nThe flow collects user enquiry to a sheet. This is optional. user leads can be captured from anywhere and entered in a sheet. From the sheet, \nAgent searches about the company and add more details from the web.\n\nPhase 2\nBased on collected details from the form and research, agent writes a personalized email to the client and saves it in the draft of sales team email id.\n\n**How to setup**\nDefine the research prompt if needed basis your company requirement.\nAdjust the email writing structure.\nAdd the email id through which email should be sent."
},
"typeVersion": 1
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email || $json.Email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
1608,
-16
],
"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": [
1788,
-16
],
"name": "IF deliverable"
}
],
"connections": {
"Code": {
"main": [
[
{
"node": "Update row in sheet",
"type": "main",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Code",
"type": "main",
"index": 0
}
]
]
},
"HTTP Request": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Create a draft": {
"main": [
[
{
"node": "Append or update row in sheet",
"type": "main",
"index": 0
}
]
]
},
"On form submission": {
"main": [
[
{
"node": "Append row in sheet",
"type": "main",
"index": 0
}
]
]
},
"Append row in sheet": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Get row(s) in sheet": {
"main": [
[
{
"node": "Introductory email ",
"type": "main",
"index": 0
}
]
]
},
"Introductory email ": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"Update row in sheet": {
"main": [
[
{
"node": "Get row(s) in sheet",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Append or update row in sheet": {
"main": [
[]
]
},
"Verify Email (BillionVerify)": {
"main": [
[
{
"node": "IF deliverable",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable": {
"main": [
[
{
"node": "Create a draft",
"type": "main",
"index": 0
}
],
[]
]
}
},
"settings": {
"executionOrder": "v1"
}
}Workflow templates with ChatGPT
Ready-to-use workflows that verify emails before ChatGPT sends.
How it works
- 1
A ChatGPT-based workflow or agent captures or generates an email address.
- 2
An n8n node or Integrately step passes the address to BillionVerify's API.
- 3
BillionVerify runs SMTP checks, disposable-domain detection, and role-address filtering.
- 4
The verification result is returned and the workflow routes the contact accordingly — valid ones proceed, invalid ones are flagged.
- 5
Only clean, verified addresses reach your email platform, CRM, or database.
When to use this
Validate emails in AI-driven lead pipelines
When a ChatGPT-powered assistant collects contact details from users, route each email through BillionVerify before passing it to your CRM or outreach tool. This prevents invalid addresses from polluting your pipeline.
Screen AI-researched prospect lists
If you use ChatGPT to research and compile prospect email lists, verify each address with BillionVerify's bulk API before importing. Catch non-existent mailboxes and disposable addresses before they cause bounces.
FAQ
How do I connect BillionVerify to a ChatGPT workflow in n8n?
Add the BillionVerify community node in your n8n workflow after any step that outputs an email address. Configure it with your API key and map the email field — no coding required.
Can BillionVerify check addresses that ChatGPT generates or suggests?
Yes. Any email string passed to BillionVerify's API will be verified regardless of its source, including addresses surfaced by AI tools like ChatGPT.
What happens if an address is marked as catch-all?
Catch-all domains accept mail for any address, making it impossible to confirm delivery. BillionVerify flags these separately so you can decide whether to include or exclude them from your sends.
Verify emails in ChatGPT
Create a free account, grab your API key, and stop bounces before they happen.
Get started free