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Canvas email verification with BillionVerify
Canvas is a productivity and collaboration platform used for managing projects, content, and workflows. Adding BillionVerify to your Canvas automations ensures that any email address collected or processed through the platform belongs to a real, reachable inbox before it enters downstream systems.
Why verify before the send
Whether Canvas is capturing contact information from forms or feeding addresses into notification workflows, unverified emails create hard bounces, clog contact records, and waste outreach effort. BillionVerify validates addresses in real time so only deliverable contacts flow through your Canvas-connected pipelines.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Canvas 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-canvas.json
{
"name": "Mark outdated workflow nodes on canvas and send a summary with Gmail (add-on) + BillionVerify",
"nodes": [
{
"id": "e8068a93-5474-474e-a48e-947269b7ca5f",
"name": "Execute Workflow Trigger",
"type": "n8n-nodes-base.executeWorkflowTrigger",
"position": [
860,
1140
],
"parameters": {},
"typeVersion": 1
},
{
"id": "9b4524d8-6ded-489b-bf45-6810f5306652",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
800,
120
],
"parameters": {
"color": 5,
"width": 1316.8621045610755,
"height": 887.980239951363,
"content": "## Download the main workflow and connect it's output to this workflow\n- Download this workflow and follow the belonging instructions: [https://n8n.io/workflows/2301-check-if-workflows-contain-build-in-nodes-that-are-not-of-the-latest-version/](https://n8n.io/workflows/2301-check-if-workflows-contain-build-in-nodes-that-are-not-of-the-latest-version/)\n- Add an \"Execute Workflow\" node and configure it, so it calls this workflow.\n \n"
},
"typeVersion": 1
},
{
"id": "cb0cacc1-34d0-4e4d-a7db-e44ece1a155f",
"name": "Prepare Output",
"type": "n8n-nodes-base.set",
"position": [
2180,
1140
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "26c2bf59-2051-47e3-a6bf-3896ad427404",
"name": "name",
"type": "string",
"value": "=<a href={{ $('Settings').item.json.instanceBaseUrl }}/workflow/{{ $json.id }}>{{ $json.name }}</a>"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "4b914937-1cff-4fc2-886b-64ec6818daf3",
"name": "Send Summary",
"type": "n8n-nodes-base.gmail",
"position": [
2400,
1140
],
"webhookId": "1ad759b3-f1cd-49dd-b288-e3344fa94c8a",
"parameters": {
"message": "=These workflows contain outdated nodes:<br>\n<ul>\n{{ $('Prepare Output').all().pluck('json').pluck('name').map(item => \"<li>\"+item+\"</li>\").join('') }}\n</ul>",
"options": {
"appendAttribution": false
},
"subject": "Outdated n8n Workflow Nodes"
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"executeOnce": true,
"typeVersion": 2.1
},
{
"id": "2f259d45-cb31-4007-beb0-93123cc619c3",
"name": "Get Workflow",
"type": "n8n-nodes-base.n8n",
"position": [
1520,
1140
],
"parameters": {
"operation": "get",
"workflowId": {
"__rl": true,
"mode": "id",
"value": "={{ $('Start Reference').item.json.Id }}"
},
"requestOptions": {}
},
"credentials": {
"n8nApi": {
"id": "credential-id",
"name": "n8nApi Credential"
}
},
"typeVersion": 1
},
{
"id": "e2bbfc5b-1af6-43b1-9d03-f35b5837d3cc",
"name": "Update Workflow",
"type": "n8n-nodes-base.n8n",
"position": [
1960,
1140
],
"parameters": {
"operation": "update",
"workflowId": {
"__rl": true,
"mode": "id",
"value": "={{ $json.id }}"
},
"requestOptions": {},
"workflowObject": "={{ JSON.stringify($json) }}"
},
"credentials": {
"n8nApi": {
"id": "credential-id",
"name": "n8nApi Credential"
}
},
"typeVersion": 1
},
{
"id": "f2bb0529-6e38-46c6-93e8-de76e9ecc31e",
"name": "Modify Workflow (if required)",
"type": "n8n-nodes-base.code",
"position": [
1740,
1140
],
"parameters": {
"mode": "runOnceForEachItem",
"jsCode": "let symbol = $('Settings').item.json.symbol;\nlet onlyMajorChanges = $('Settings').item.json.onlyMajorChanges;\nlet addNodesToCanvas = $('Settings').item.json.addNodesToCanvas;\n\n// create shallow copy including nested objects\nlet data = JSON.parse(JSON.stringify($json));\n\nchangeCount = 0;\n// Loop through nodes and update the names\nfor (let outdatedNode of $('Start Reference').item.json.outdated_nodes) {\n // skip minor changes, if settings require it\n if (onlyMajorChanges && outdatedNode.version.toString().substring(0, 1) == outdatedNode.latestVersion.toString().substring(0, 1)) {\n continue;\n }\n // update nodes, it they are not already renamed with symbol\n for (let existingNode of data.nodes) {\n if (outdatedNode.name == existingNode.name && !existingNode.name.startsWith(symbol) && existingNode.id) {\n // prepend new nodes, so they appear below outdated nodes on the canvas\n if (addNodesToCanvas) {\n let newNode = JSON.parse(JSON.stringify(existingNode));\n delete newNode.id;\n newNode.typeVersion = outdatedNode.latestVersion;\n newNode.position = [newNode.position[0] + 40, newNode.position[1] - 40];\n data.nodes.unshift(newNode);\n }\n // rename outdated nodes (prepend symbol)\n existingNode.name = symbol + \" \" + existingNode.name;\n \n // update connections\n for (let connectionKey in data.connections) {\n let connection = data.connections[connectionKey];\n \n // rename keys\n if (connectionKey == outdatedNode.name) {\n let newKey = symbol + \" \" + connectionKey;\n data.connections[newKey] = connection;\n delete data.connections[connectionKey];\n }\n \n // check the nested \"main\" array\n if (connection.main) {\n for (let mainArray of connection.main) {\n for (let nodeObj of mainArray) {\n if (nodeObj.node == outdatedNode.name) {\n nodeObj.node = symbol + \" \" + nodeObj.node;\n }\n }\n }\n }\n }\n changeCount++;\n }\n }\n}\n\nif (changeCount == 0) {\n return null;\n}\n\nreturn {\n id: data.id,\n name: data.name,\n nodes: data.nodes,\n connections: data.connections,\n settings: data.settings\n}"
},
"typeVersion": 2
},
{
"id": "b4b7d328-8128-4f07-841a-1efa26c3fdd5",
"name": "Start Reference",
"type": "n8n-nodes-base.noOp",
"position": [
1080,
1140
],
"parameters": {},
"typeVersion": 1
},
{
"id": "7d80b557-15ac-479e-a219-dd254580a063",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
800,
1020
],
"parameters": {
"color": 7,
"width": 216.6228464570463,
"height": 282.1449413577448,
"content": "This workflow is called by another workflow which provides a list of all workflows with major and minor node updates"
},
"typeVersion": 1
},
{
"id": "1becaab6-fe2a-44e9-bc7e-ce87665f25bd",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
2120,
680
],
"parameters": {
"color": 7,
"width": 435.46822963832705,
"height": 327.68691689762716,
"content": "## Example input data\n\n```\n[\n {\n \"workflow\": \"Workflow Nodes Update\",\n \"Id\": \"dFJpQTFg3QPH6Ol9\",\n \"outdated_nodes\": [\n {\n \"name\": \"If\",\n \"type\": \"n8n-nodes-base.if\",\n \"version\": 2,\n \"latestVersion\": 2.2\n }\n ]\n }\n]\n```"
},
"typeVersion": 1
},
{
"id": "9ce81677-4dd4-4a9a-a7a3-66b113c69de6",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
1020,
1020
],
"parameters": {
"color": 7,
"width": 216.6228464570463,
"height": 282.1449413577448,
"content": "The following nodes start referencing from here, so it is easily possible to change the logic prior to this node."
},
"typeVersion": 1
},
{
"id": "f6e7e7ce-1282-4292-8675-ca8bbe215d5f",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
1240,
1020
],
"parameters": {
"width": 216.6228464570463,
"height": 282.1449413577448,
"content": "## Update settings\nMinimum requirement:\n- Set your instanceBaseUrl"
},
"typeVersion": 1
},
{
"id": "46b168d5-c866-497b-8664-92722a356feb",
"name": "Settings",
"type": "n8n-nodes-base.set",
"position": [
1300,
1140
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "99947a54-e9f9-4d04-b273-9d7eeed62775",
"name": "instanceBaseUrl",
"type": "string",
"value": "http://localhost:5432"
},
{
"id": "35a63bda-fcbb-4885-a8d6-4b52c6579206",
"name": "symbol",
"type": "string",
"value": "⚠️"
},
{
"id": "3481286b-359f-4e86-8f56-bdb267ebd6a2",
"name": "onlyMajorChanges",
"type": "boolean",
"value": true
},
{
"id": "2377c274-5501-494f-813e-0d3ebe47e375",
"name": "addNodesToCanvas",
"type": "boolean",
"value": true
}
]
}
},
"typeVersion": 3.4
},
{
"id": "d28ac933-7dbc-4039-821b-7cd4c4c5ec94",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
2120,
1020
],
"parameters": {
"color": 7,
"width": 216.6228464570463,
"height": 282.1449413577448,
"content": "URL's are generated for each affected workflow"
},
"typeVersion": 1
},
{
"id": "0fef2be5-92d5-4d4f-8afc-b958ee616787",
"name": "Sticky Note7",
"type": "n8n-nodes-base.stickyNote",
"position": [
2340,
1020
],
"parameters": {
"width": 216.6228464570463,
"height": 282.1449413577448,
"content": "## Setup Gmail\nMinimum requirement:\n- Update mail recipient"
},
"typeVersion": 1
},
{
"id": "dc940f78-1eff-4393-9d9a-f4afefe24d45",
"name": "Sticky Note8",
"type": "n8n-nodes-base.stickyNote",
"position": [
1460,
1020
],
"parameters": {
"color": 7,
"width": 657.2496253932529,
"height": 282.1449413577448,
"content": "Each workflow is being processed and modified if needed. Depending on the settings an icon is being prepended to the name of outdated nodes. In addition a newer version is being added close by, so it can be replaced quicker by the user."
},
"typeVersion": 1
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email || $json.Email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
2040,
1140
],
"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": [
2220,
1140
],
"name": "IF deliverable"
}
],
"connections": {
"Settings": {
"main": [
[
{
"node": "Get Workflow",
"type": "main",
"index": 0
}
]
]
},
"Get Workflow": {
"main": [
[
{
"node": "Modify Workflow (if required)",
"type": "main",
"index": 0
}
]
]
},
"Prepare Output": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"Start Reference": {
"main": [
[
{
"node": "Settings",
"type": "main",
"index": 0
}
]
]
},
"Update Workflow": {
"main": [
[
{
"node": "Prepare Output",
"type": "main",
"index": 0
}
]
]
},
"Execute Workflow Trigger": {
"main": [
[
{
"node": "Start Reference",
"type": "main",
"index": 0
}
]
]
},
"Modify Workflow (if required)": {
"main": [
[
{
"node": "Update Workflow",
"type": "main",
"index": 0
}
]
]
},
"Verify Email (BillionVerify)": {
"main": [
[
{
"node": "IF deliverable",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable": {
"main": [
[
{
"node": "Send Summary",
"type": "main",
"index": 0
}
],
[]
]
}
},
"settings": {
"executionOrder": "v1"
}
}Workflow templates with Canvas
Ready-to-use workflows that verify emails before Canvas sends.
How it works
- 1
Connect BillionVerify via the n8n community node, Integrately, or the REST API to your Canvas automation.
- 2
Identify the workflow step where email addresses enter your Canvas-connected pipeline.
- 3
Insert a BillionVerify verification node to check each address for validity, disposability, and SMTP reachability.
- 4
Route valid addresses forward; quarantine or discard flagged ones based on your risk tolerance.
- 5
Review BillionVerify's verification logs to monitor address quality trends across your workflows.
When to use this
Verify contacts added through Canvas forms
When someone submits a form integrated with Canvas, validate their email instantly. Reject disposable or invalid addresses before they reach your CRM or email marketing tool downstream.
Protect notification pipelines
If Canvas triggers automated email notifications to collaborators or customers, pre-check those addresses with BillionVerify to avoid bounces that could harm your sending domain.
FAQ
Which connection method works best for Canvas integrations?
Integrately is the easiest option — it offers a 1-click setup with no code. For more complex logic, the n8n community node or REST API give you full control over routing decisions.
What does BillionVerify check beyond basic syntax validation?
Beyond format checks, it verifies domain existence, tests SMTP reachability, detects disposable providers, and identifies catch-all and role-based addresses that are likely to bounce or go unread.
Can I use BillionVerify to clean an existing list of Canvas contacts?
Yes. Export the addresses, run them through BillionVerify's bulk API, and reimport only the valid ones. This is a good practice before launching any large outreach campaign.
Does verification work in real time during form submissions?
Yes. The BillionVerify API responds in milliseconds, making real-time validation at the point of form submission seamless for end users.
Verify emails in Canvas
Create a free account, grab your API key, and stop bounces before they happen.
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