← All Productivity
Clickup email verification with BillionVerify
ClickUp is an all-in-one productivity platform where teams manage tasks, projects, docs, and goals. When contacts or leads flow into ClickUp from forms, integrations, or automations, unverified email addresses silently undermine every follow-up you plan to send.
Why verify before the send
Invalid, disposable, or catch-all email addresses attached to ClickUp tasks mean your outreach bounces before it starts. BillionVerify checks every address for deliverability issues — including role-based inboxes and temporary domains — so the contact data living in your tasks is accurate and actionable from the moment it arrives.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Clickup 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-clickup.json
{
"name": "Automate release notes from ClickUp to Notion & Slack with GPT-4o + BillionVerify",
"nodes": [
{
"id": "0a9f291a-fb5e-48d2-aef0-8b4cb3471228",
"name": "Configure GPT-4o Model",
"type": "@n8n/n8n-nodes-langchain.lmChatAzureOpenAi",
"position": [
160,
128
],
"parameters": {
"model": "gpt-4o",
"options": {}
},
"credentials": {
"azureOpenAiApi": {
"id": "credential-id",
"name": "azureOpenAiApi Credential"
}
},
"typeVersion": 1
},
{
"id": "296c2339-d34b-45b4-8c79-05a1ab1bb5e1",
"name": "Log Errors in Google Sheets",
"type": "n8n-nodes-base.googleSheets",
"position": [
-288,
544
],
"parameters": {
"columns": {
"value": {},
"schema": [
{
"id": "error_id",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "error_id",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "error",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "error",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [
"error_id"
],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "append",
"sheetName": {
"__rl": true,
"mode": "list",
"value": 1338537721,
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1Uldk_4BxWbdZTDZxFUeohIfeBmGHHqVEl9Ogb0l6R8Y/edit#gid=1338537721",
"cachedResultName": "error log sheet"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1Uldk_4BxWbdZTDZxFUeohIfeBmGHHqVEl9Ogb0l6R8Y",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1Uldk_4BxWbdZTDZxFUeohIfeBmGHHqVEl9Ogb0l6R8Y/edit?usp=drivesdk",
"cachedResultName": "Interviewer Brief Pack "
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "credential-id",
"name": "googleSheetsOAuth2Api Credential"
}
},
"typeVersion": 4.6
},
{
"id": "a754bf62-8af5-43d5-8210-a9d451828bfa",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1008,
-240
],
"parameters": {
"color": 7,
"width": 528,
"height": 368,
"content": "## ClickUp Trigger & Validation\nListens for ClickUp task status changes and validates the webhook payload. \nPrevents invalid or empty task events from being processed.\n"
},
"typeVersion": 1
},
{
"id": "ae6259ca-a0d7-49c5-b33f-c122d087c856",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1664,
-944
],
"parameters": {
"width": 576,
"height": 576,
"content": "## How it works\nThis automation turns ClickUp task updates into complete release-note workflows. \nWhen a task’s status changes in ClickUp (e.g., “In Review” → “Complete”), the workflow fetches full task details, cleans them, and uses Azure OpenAI GPT-4o to generate structured, Markdown-style release notes. \nThe notes are saved automatically in Notion under the “Release Notes” database, then shared in Slack as a formatted announcement. \nFinally, an HTML email acknowledgment is sent to the task owner confirming that the release is documented and live. \nAny validation or API errors are logged in Google Sheets for traceability.\n\n## Setup steps\n1. Connect your credentials: \n - ClickUp (webhook + API) \n - Azure OpenAI API \n - Notion (database) \n - Slack \n - Gmail \n - Google Sheets (for error logging)\n2. Replace Notion DB ID, Slack user/channel, and Google Sheet ID with yours. \n3. Confirm ClickUp team ID and event trigger (`taskStatusUpdated`). \n4. Adjust the Gmail HTML message if desired. \n5. Run a test task update to verify flow end-to-end.\n"
},
"typeVersion": 1
},
{
"id": "652ed9cf-0a37-4772-8b59-232706351ce2",
"name": "ClickUp Task Status Trigger",
"type": "n8n-nodes-base.clickUpTrigger",
"position": [
-944,
-64
],
"webhookId": "5e28e69f-9b57-48b6-a5b0-9150c156e111",
"parameters": {
"team": "9014872066",
"events": [
"taskStatusUpdated"
],
"filters": {}
},
"credentials": {
"clickUpApi": {
"id": "credential-id",
"name": "clickUpApi Credential"
}
},
"typeVersion": 1
},
{
"id": "f803efdb-39a1-44ad-bf1b-f93dbe68a29a",
"name": "Validate ClickUp Payload",
"type": "n8n-nodes-base.if",
"position": [
-688,
-64
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "e2adb005-2b3c-4d1e-8445-442df1fe925a",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
},
"leftValue": "={{ $json.task_id }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "386b65fa-bf70-40ef-9a3b-00ca7e84d49d",
"name": " Fetch Task Details from ClickUp",
"type": "n8n-nodes-base.clickUp",
"position": [
-352,
-80
],
"parameters": {
"id": "={{ $json.task_id }}",
"operation": "get"
},
"credentials": {
"clickUpApi": {
"id": "credential-id",
"name": "clickUpApi Credential"
}
},
"typeVersion": 1
},
{
"id": "9df1d658-7d5b-4ad9-a8c5-921cd84f0d7e",
"name": "Parse Task Details in JavaScript",
"type": "n8n-nodes-base.code",
"position": [
-112,
-80
],
"parameters": {
"jsCode": "// Extract ClickUp task details safely\nconst task = $json;\n\n// Handle cases where arrays or fields might be empty\nconst assignee = (task.assignees && task.assignees.length > 0) ? task.assignees[0] : {};\nconst customFields = task.custom_fields || [];\n\n// Try to find the first field with a value (like a GitHub or docs link)\nconst linkField = customFields.find(f => f.value) || {};\n\nreturn [\n {\n json: {\n title: task.name || \"Untitled Task\",\n description: task.description || \"No description available.\",\n status: task.status?.status || \"No status\",\n priority: task.priority?.priority || \"Not set\",\n due_date: task.due_date || \"No due date\",\n assignee: assignee.username || \"Unassigned\",\n email: assignee.email || \"No email\",\n link: linkField.value || \"No link provided\",\n url: task.url || \"No URL\",\n },\n },\n];\n"
},
"typeVersion": 2
},
{
"id": "0cea2e62-14b1-4b94-82f9-fad9d1039e42",
"name": "Generate Release Notes FAQ (AI)",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
144,
-80
],
"parameters": {
"text": "=Task Title: {{$json.title}}\nDescription: {{$json.description}}\nStatus: {{$json.status}}\nPriority: {{$json.priority}}\nDue Date: {{$json.due_date}}\nAssignee: {{$json.assignee}} ({{$json.email}})\nTask URL: {{$json.url}}\nReference Link: {{$json.link}}\n\nPlease create a brief FAQ in Markdown format using the 4 sections:\n1) What changed\n2) Why\n3) How to use\n4) Known issues\n",
"options": {
"systemMessage": "=You are a release notes editor. \nYour job is to turn technical task information into a clear, simple FAQ for users and internal teams. \nBe concise, non-marketing, and structured under these exact 4 sections:\n1) What changed\n2) Why\n3) How to use\n4) Known issues\n\nEach section should be 2–4 short bullet points.\n"
},
"promptType": "define"
},
"typeVersion": 2.1
},
{
"id": "8928882c-2c88-43f3-9797-f6179f2bb841",
"name": "Save Release Notes to Notion",
"type": "n8n-nodes-base.notion",
"position": [
544,
-80
],
"parameters": {
"title": "={{ $('Parse Task Details in JavaScript').item.json.title }}",
"simple": false,
"options": {},
"resource": "databasePage",
"databaseId": {
"__rl": true,
"mode": "list",
"value": "29a802b9-1fa0-804a-b406-e078961e0659",
"cachedResultUrl": "https://www.notion.so/29a802b91fa0804ab406e078961e0659",
"cachedResultName": "Release Notes"
},
"propertiesUi": {
"propertyValues": [
{
"key": "Task URL|rich_text",
"textContent": "={{ $('Parse Task Details in JavaScript').item.json.url }}"
},
{
"key": "Status|rich_text",
"textContent": "={{ $('Parse Task Details in JavaScript').item.json.status }}"
},
{
"key": "Priority|rich_text",
"textContent": "={{ $('Parse Task Details in JavaScript').item.json.priority }}"
},
{
"key": "Owner|rich_text",
"textContent": "={{ $('Parse Task Details in JavaScript').item.json.assignee }}"
},
{
"key": "FAQ Content|rich_text",
"textContent": "={{ $json.output }}"
}
]
}
},
"credentials": {
"notionApi": {
"id": "credential-id",
"name": "notionApi Credential"
}
},
"typeVersion": 2.2
},
{
"id": "63000865-c681-490a-8ce0-f8faf3c89e01",
"name": "Announce Release in Slack",
"type": "n8n-nodes-base.slack",
"position": [
1184,
-80
],
"webhookId": "ddaa7632-9e35-4bd3-82d6-572d5cae84cc",
"parameters": {
"text": "={{ $json.output }}",
"user": {
"__rl": true,
"mode": "list",
"value": "U09HMPVD466",
"cachedResultName": "newscctv22"
},
"select": "user",
"otherOptions": {}
},
"credentials": {
"slackApi": {
"id": "credential-id",
"name": "slackApi Credential"
}
},
"typeVersion": 2.3
},
{
"id": "add680c8-a40a-489c-bc5f-34cac0a078a0",
"name": "Configure GPT-4o Model1",
"type": "@n8n/n8n-nodes-langchain.lmChatAzureOpenAi",
"position": [
816,
128
],
"parameters": {
"model": "gpt-4o",
"options": {}
},
"credentials": {
"azureOpenAiApi": {
"id": "credential-id",
"name": "azureOpenAiApi Credential"
}
},
"typeVersion": 1
},
{
"id": "1d91b3cc-e61d-419d-a15e-8dfe2a9a4dd5",
"name": "Generate Slack Release Announcement (AI)",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
800,
-80
],
"parameters": {
"text": "=Create a Slack release announcement message using this task information:\n\nTask Title:{{ $(' Fetch Task Details from ClickUp').item.json.name }}\nDescription: {{ $(' Fetch Task Details from ClickUp').item.json.description }}\nStatus: {{ $(' Fetch Task Details from ClickUp').item.json.status }}\nPriority:{{ $json.properties }}\nAssignee: {{ $(' Fetch Task Details from ClickUp').item.json.assignees[0].email }}\nTask URL: {{$json.url}}\n\nFormat it as a professional Slack message with emojis, proper formatting, and a clickable task link.",
"options": {
"systemMessage": "=You are a Slack message formatter for release announcements.\n\nYour job is to take ClickUp task information and create a visually appealing, professional Slack message.\n\nRequirements:\n1. Use Slack markdown formatting (bold with *, italics with _, code blocks with ```)\n2. Include appropriate emojis for visual appeal\n3. Keep it concise and scannable\n4. Structure: Header → Key Details → Task Link → Release Date → Footer\n5. Use bullet points or clean formatting for readability\n6. Add a clickable link to the ClickUp task\n7. Include automation signature at the bottom\n\nReturn ONLY the formatted Slack message text, no JSON, no explanations"
},
"promptType": "define"
},
"typeVersion": 2.1
},
{
"id": "be95e9d0-6750-477a-b4a2-d1a097aac9fd",
"name": " Send Acknowledgment Email to Assignee",
"type": "n8n-nodes-base.gmail",
"position": [
1536,
-80
],
"webhookId": "0c82c299-6938-42ed-bda6-5007d79af34f",
"parameters": {
"sendTo": "={{ $('Parse Task Details in JavaScript').item.json.email }}",
"message": "=<!DOCTYPE html>\n<html>\n<head>\n <style>\n body {\n font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;\n line-height: 1.6;\n color: #333;\n max-width: 600px;\n margin: 0 auto;\n padding: 20px;\n }\n .header {\n background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);\n color: white;\n padding: 30px;\n border-radius: 10px 10px 0 0;\n text-align: center;\n }\n .header h1 {\n margin: 0;\n font-size: 24px;\n }\n .content {\n background: #f8f9fa;\n padding: 30px;\n border-radius: 0 0 10px 10px;\n }\n .info-box {\n background: white;\n padding: 20px;\n border-radius: 8px;\n margin: 20px 0;\n border-left: 4px solid #667eea;\n }\n .info-row {\n margin: 12px 0;\n display: flex;\n align-items: center;\n }\n .label {\n font-weight: 600;\n color: #667eea;\n min-width: 120px;\n }\n .value {\n color: #333;\n }\n .priority-urgent { color: #dc3545; font-weight: bold; }\n .priority-high { color: #fd7e14; font-weight: bold; }\n .priority-normal { color: #ffc107; }\n .priority-low { color: #28a745; }\n .status-ready { color: #28a745; font-weight: bold; }\n .cta-button {\n display: inline-block;\n background: #667eea;\n color: white !important;\n padding: 14px 30px;\n text-decoration: none;\n border-radius: 6px;\n margin: 20px 0;\n font-weight: 600;\n text-align: center;\n }\n .cta-button:hover {\n background: #5568d3;\n }\n .faq-section {\n background: white;\n padding: 20px;\n border-radius: 8px;\n margin: 20px 0;\n }\n .faq-section h3 {\n color: #667eea;\n margin-top: 0;\n }\n .footer {\n text-align: center;\n padding: 20px;\n color: #6c757d;\n font-size: 12px;\n border-top: 1px solid #dee2e6;\n margin-top: 30px;\n }\n .emoji {\n font-size: 18px;\n margin-right: 8px;\n }\n </style>\n</head>\n<body>\n <div class=\"header\">\n <h1>🚀 Your Release is Ready!</h1>\n </div>\n \n <div class=\"content\">\n <p>Hi <strong>{{ $('Parse Task Details in JavaScript').item.json.assignee }}</strong>,</p>\n \n <p>Great news! Your feature release has been processed and documented. Here are the details:</p>\n \n <div class=\"info-box\">\n <div class=\"info-row\">\n <span class=\"label\">📋 Feature:</span>\n <span class=\"value\">{{ $('Parse Task Details in JavaScript').item.json.title }}</span>\n </div>\n <div class=\"info-row\">\n <span class=\"label\">⚡ Priority:</span>\n <span class=\"value priority-{{ $('Parse Task Details in JavaScript').item.json.priority.toLowerCase() }}\">\n {{ $('Parse Task Details in JavaScript').item.json.priority }}\n </span>\n </div>\n <div class=\"info-row\">\n <span class=\"label\">✅ Status:</span>\n <span class=\"value status-ready\">{{ $('Parse Task Details in JavaScript').item.json.status }}</span>\n </div>\n <div class=\"info-row\">\n <span class=\"label\">📅 Release Date:</span>\n <span class=\"value\">{{ $now.toFormat('MMMM dd, yyyy') }}</span>\n </div>\n </div>\n\n <center>\n <a href=\"{{ $('Save Release Notes to Notion').item.json.url }}\" class=\"cta-button\">\n 📖 View Full Release Notes in Notion\n </a>\n </center>\n\n <div class=\"faq-section\">\n <h3>📝 Release Notes Preview</h3>\n <p style=\"white-space: pre-line; color: #495057; line-height: 1.8;\">{{ $('Generate Release Notes FAQ (AI)').item.json.output.substring(0, 500) }}...</p>\n </div>\n\n <div class=\"info-box\" style=\"border-left-color: #28a745;\">\n <p style=\"margin: 0;\"><strong>🔗 Quick Links:</strong></p>\n <ul style=\"margin: 10px 0;\">\n <li><a href=\"{{ $('Parse Task Details in JavaScript').item.json.url }}\" style=\"color: #667eea;\">View ClickUp Task</a></li>\n <li><a href=\"{{ $('Save Release Notes to Notion').item.json.url }}\" style=\"color: #667eea;\">View Notion Documentation</a></li>\n {{ $('Parse Task Details in JavaScript').item.json.link !== 'No link provided' ? '<li><a href=\"' + $('Parse Task Details in JavaScript').item.json.link + '\" style=\"color: #667eea;\">Reference Link</a></li>' : '' }}\n </ul>\n </div>\n\n <p style=\"margin-top: 30px;\">The team has been notified via Slack, and this release is now live in our knowledge base.</p>\n \n <p>If you have any questions or need to update the documentation, please reach out to the team.</p>\n \n <p style=\"margin-top: 30px;\">\n Best regards,<br>\n <strong>Release Automation Team</strong>\n </p>\n </div>\n\n <div class=\"footer\">\n <p>🤖 This is an automated message generated by our n8n workflow.</p>\n <p>If you believe you received this in error, please contact your system administrator.</p>\n </div>\n</body>\n</html>",
"options": {},
"subject": "=✅ Release Ready: {{ $('Parse Task Details in JavaScript').item.json.title }}"
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 2.1
},
{
"id": "56486d5f-7142-4092-8808-d95961f28ac8",
"name": "Sticky Note12",
"type": "n8n-nodes-base.stickyNote",
"position": [
-416,
-304
],
"parameters": {
"color": 7,
"width": 464,
"height": 464,
"content": "## Task Data Fetching & Parsing\nRetrieves detailed ClickUp task info and converts it into clean JSON fields. \nEnsures consistent input for AI-based release-note generation.\n"
},
"typeVersion": 1
},
{
"id": "26dd72fa-2822-41ad-8eee-f8b8fb4a1cda",
"name": "Sticky Note13",
"type": "n8n-nodes-base.stickyNote",
"position": [
96,
-288
],
"parameters": {
"color": 7,
"width": 352,
"height": 576,
"content": "## AI Release-Note Generation\nUses GPT-4o to summarize task details into a four-section FAQ format. \nEach section highlights what changed, why, how to use it, and any known issues.\n"
},
"typeVersion": 1
},
{
"id": "e7920945-1bac-4cdc-b0bf-8aaa731e271f",
"name": "Sticky Note14",
"type": "n8n-nodes-base.stickyNote",
"position": [
464,
-352
],
"parameters": {
"color": 7,
"height": 640,
"content": "## Notion Documentation & Record Keeping\nAutomatically creates a new Notion entry under “Release Notes.” \nCaptures all key fields: title, owner, priority, status, and generated FAQ.\n"
},
"typeVersion": 1
},
{
"id": "4a84e45d-17b4-4ec9-96bf-4c6ec252e393",
"name": "Sticky Note15",
"type": "n8n-nodes-base.stickyNote",
"position": [
736,
-304
],
"parameters": {
"color": 7,
"width": 640,
"height": 592,
"content": "## Slack Announcement & AI Formatting\nFormats a professional, emoji-enhanced Slack message using GPT-4o. \nPosts it to the team channel to announce the new release instantly.\n"
},
"typeVersion": 1
},
{
"id": "0f1b231a-9a08-4e5b-8344-01aa0f8ae8c8",
"name": "Sticky Note16",
"type": "n8n-nodes-base.stickyNote",
"position": [
1408,
-256
],
"parameters": {
"color": 7,
"width": 400,
"height": 400,
"content": "## Email Acknowledgment & Closure\nSends a confirmation email to the task assignee. \nIncludes release details, links to Notion & ClickUp, and a preview of the AI-generated notes.\n"
},
"typeVersion": 1
},
{
"id": "ad64298d-dcf6-45e5-86a0-dadef7539b6c",
"name": "Sticky Note17",
"type": "n8n-nodes-base.stickyNote",
"position": [
-368,
320
],
"parameters": {
"color": 7,
"width": 304,
"height": 464,
"content": "## Error Handling & Logging\nLogs any missing payloads or API failures to Google Sheets. \nProvides visibility into workflow issues for easy debugging.\n"
},
"typeVersion": 1
},
{
"parameters": {
"operation": "verify",
"email": "={{ $('Parse Task Details in JavaScript').item.json.email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
1176,
-80
],
"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": [
1356,
-80
],
"name": "IF deliverable"
}
],
"connections": {
"Configure GPT-4o Model": {
"ai_languageModel": [
[
{
"node": "Generate Release Notes FAQ (AI)",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Configure GPT-4o Model1": {
"ai_languageModel": [
[
{
"node": "Generate Slack Release Announcement (AI)",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Validate ClickUp Payload": {
"main": [
[
{
"node": " Fetch Task Details from ClickUp",
"type": "main",
"index": 0
}
],
[
{
"node": "Log Errors in Google Sheets",
"type": "main",
"index": 0
}
]
]
},
"Announce Release in Slack": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"ClickUp Task Status Trigger": {
"main": [
[
{
"node": "Validate ClickUp Payload",
"type": "main",
"index": 0
}
]
]
},
"Save Release Notes to Notion": {
"main": [
[
{
"node": "Generate Slack Release Announcement (AI)",
"type": "main",
"index": 0
}
]
]
},
"Generate Release Notes FAQ (AI)": {
"main": [
[
{
"node": "Save Release Notes to Notion",
"type": "main",
"index": 0
}
]
]
},
" Fetch Task Details from ClickUp": {
"main": [
[
{
"node": "Parse Task Details in JavaScript",
"type": "main",
"index": 0
}
]
]
},
"Parse Task Details in JavaScript": {
"main": [
[
{
"node": "Generate Release Notes FAQ (AI)",
"type": "main",
"index": 0
}
]
]
},
"Generate Slack Release Announcement (AI)": {
"main": [
[
{
"node": "Announce Release in Slack",
"type": "main",
"index": 0
}
]
]
},
"Verify Email (BillionVerify)": {
"main": [
[
{
"node": "IF deliverable",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable": {
"main": [
[
{
"node": " Send Acknowledgment Email to Assignee",
"type": "main",
"index": 0
}
],
[]
]
}
},
"settings": {
"executionOrder": "v1"
}
}Workflow templates with Clickup
Ready-to-use workflows that verify emails before Clickup sends.
How it works
- 1
Connect ClickUp and BillionVerify through the n8n community node, Integrately (1-click setup), or the BillionVerify REST API.
- 2
Set a trigger — such as a new task created, a custom field updated, or a form submission received — in your ClickUp workspace.
- 3
BillionVerify checks the email address for syntax errors, DNS validity, disposable domains, role-based patterns, and catch-all status.
- 4
The verification result (valid, invalid, risky, catch-all) is written back to the ClickUp task as a custom field or comment.
- 5
Downstream automations route, tag, or discard tasks based on verification status, keeping only deliverable contacts in your active workflows.
When to use this
Clean incoming lead data automatically
When a new task is created in ClickUp from a lead form or CRM sync, trigger BillionVerify to validate the contact's email. Flag or remove invalid addresses before they pollute your list and inflate your bounce rate.
Protect project communication workflows
Teams often store client and stakeholder emails directly in ClickUp tasks. Verify those addresses on entry so automated status updates, invoices, and notifications actually reach the people who need them.
Maintain data hygiene across recurring automations
Run periodic verification passes on email fields stored in ClickUp custom fields, surfacing stale or risky addresses before campaign launches or scheduled outreach sequences.
FAQ
Does BillionVerify work with ClickUp custom fields?
Yes. Using n8n or the REST API you can read email values from any ClickUp custom field, verify them, and write the result back — all without leaving your existing workflow structure.
Can I verify emails in bulk from a ClickUp list?
Absolutely. Export your list or iterate over tasks via the API, send addresses to BillionVerify in batch, and update each task with its verification status in a single automated run.
What does 'catch-all' mean and should I send to those addresses?
A catch-all domain accepts any email without confirming the mailbox exists. BillionVerify flags these so you can decide whether to send cautiously or exclude them from high-stakes campaigns.
Is there a limit on how many emails I can verify?
BillionVerify offers flexible credit-based pricing that scales from hundreds to billions of verifications, making it suitable for small ClickUp teams and large enterprise deployments alike.
Verify emails in Clickup
Create a free account, grab your API key, and stop bounces before they happen.
Get started free