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Quickbooks Online email verification with BillionVerify
QuickBooks Online is the go-to accounting platform for small and mid-sized businesses, handling invoices, expenses, and client records. BillionVerify validates client and vendor email addresses stored in QuickBooks before invoices or payment reminders are sent, preventing bounces and ensuring financial communications always land.
Why verify before the send
A bounced invoice or payment reminder means delayed revenue and a frustrated client relationship. Invalid email addresses in your accounting system accumulate silently until they cause real business problems. BillionVerify catches bad addresses — including catch-all domains that accept mail but never deliver it — before they disrupt your billing cycle.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Quickbooks Online 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-quickbooks-online.json
{
"name": "Gmail and QuickBooks Online workflow + BillionVerify",
"nodes": [
{
"id": "030584dd-ad50-49e3-a12e-49ccd867ae8c",
"name": "Every Day at 8 AM",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
-80,
0
],
"parameters": {
"rule": {
"interval": [
{
"triggerAtHour": 8
}
]
}
},
"typeVersion": 1.2
},
{
"id": "6b5f5472-b602-4775-b010-5b5a0fe77be5",
"name": "New Email Receipt Received",
"type": "n8n-nodes-base.gmailTrigger",
"position": [
-80,
-192
],
"parameters": {
"filters": {
"labelIds": [
"Label_1709246557347095595"
]
},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
}
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 1.3
},
{
"id": "bbd5cdaf-905a-4f5d-abb8-ff736e4b5aa9",
"name": "Get New Receipt from Email",
"type": "n8n-nodes-base.gmail",
"position": [
176,
-96
],
"webhookId": "449f7eea-0be5-4d86-a254-ef047b9f8d67",
"parameters": {
"simple": false,
"filters": {
"labelIds": [
"Label_1709246557347095595"
]
},
"options": {},
"operation": "getAll",
"returnAll": true
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 2.1
},
{
"id": "6f5e3ebf-fef1-4508-be4e-0e7d9f106c01",
"name": "Forward the Receipt to QBO",
"type": "n8n-nodes-base.gmail",
"position": [
416,
-96
],
"webhookId": "0a979bd8-edd5-468e-8eab-4a914e2f80c3",
"parameters": {
"sendTo": "user@example.com",
"message": "={{ $json.html }}",
"options": {
"appendAttribution": false
},
"subject": "Email Receipt"
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 2.1
},
{
"id": "2c05914d-8b61-4449-b55f-fe280939446c",
"name": "Remove the Old Label",
"type": "n8n-nodes-base.gmail",
"position": [
656,
-96
],
"webhookId": "722818d7-391e-428b-b173-fe5bb744f54c",
"parameters": {
"labelIds": [
"Label_1709246557347095595"
],
"messageId": "={{ $('Get New Receipt from Email').item.json.id }}",
"operation": "removeLabels"
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 2.1
},
{
"id": "1cab2ebf-4f27-401c-a65e-d98486d367e7",
"name": "Add the \"Processed\" Label",
"type": "n8n-nodes-base.gmail",
"position": [
864,
-96
],
"webhookId": "0bf6f5ce-90be-4789-9e1f-415988c600c3",
"parameters": {
"labelIds": [
"Label_3375203355533515697"
],
"messageId": "={{ $('Get New Receipt from Email').item.json.id }}",
"operation": "addLabels"
},
"credentials": {
"gmailOAuth2": {
"id": "credential-id",
"name": "gmailOAuth2 Credential"
}
},
"typeVersion": 2.1
},
{
"id": "5645be8e-7cfc-47be-b492-9901877fb0d5",
"name": "Sticky Note7",
"type": "n8n-nodes-base.stickyNote",
"position": [
-928,
-752
],
"parameters": {
"width": 736,
"height": 1328,
"content": "## Automatically Forward Email Receipts to QuickBooks Online\n\n## What It Does \nAre you tired of manually uploading email receipts to QuickBooks Online (QBO)? Are your email forwarding rules difficult to set up or unreliable? This n8n workflow automatically forwards your email receipts to QuickBooks Online with minimal configuration.\n\n## Example Use Cases \n- Online purchase and subscription receipts \n- E-transfer confirmations \n- Bills and invoices received from suppliers \n- Expense reports sent by vendors \n- Payment confirmation emails\n- Send other people's emails to QBO, bypassing the forwarding restrictions\n\n## Prerequisites \nTo use this workflow, you'll need: \n- A Gmail account with credentials configured in n8n \n- QuickBooks Online account with receipt forwarding enabled \n\n## How to Set Up Gmail \n1. Search for emails that contain receipts (e.g., subject contains \"Interac E-transfer\") \n2. Create a Gmail filter that automatically applies a specific label to those emails (e.g., \"New E-Transfer\") \n3. Create another label for processed emails to prevent duplicate processing (e.g., \"Processed\") \n\n## How It Works \n1. **Trigger:** The workflow runs when a new receipt is received; a scheduled trigger acts as a failsafe to catch missed emails. \n2. The first Gmail node retrieves emails with the \"new receipt\" label. \n3. The second Gmail node forwards the exact email contents to QuickBooks Online, mimicking a forwarded email. \n4. The workflow removes the original \"new receipt\" label and applies the \"processed\" label to avoid duplicate forwarding. \n\n## How to Use \n- Configure each Gmail node with your Gmail credentials in n8n. \n- Enter your QuickBooks Online receipt forwarding email address in the second Gmail node (e.g., example@qbdocs.com). \n- Set up the appropriate labels in each Gmail node to match your Gmail filter and workflow logic. \n\n## Customization Options \n- Modify the Gmail nodes to download and forward attachments if necessary. \n- Create separate workflows for different types of emails; for example, include vendor information in the subject line (e.g., \"Your Instacart Order Receipt\") to help QuickBooks categorize expenses. \n- Add error handling and notifications to monitor workflow execution. \n\n## Why It's Useful \n- Saves time by automating manual forwarding of receipts to QuickBooks Online. \n- Reduces errors and missed receipts that can occur with manual processing. \n- Keeps your QuickBooks records up-to-date automatically. \n- Provides a scalable solution for handling various receipt types and vendors. \n- Easily customizable to fit your specific email and accounting workflows.\n"
},
"typeVersion": 1
},
{
"id": "214f3e76-bad5-485e-a093-e302642c7adf",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
112,
-192
],
"parameters": {
"color": 7,
"width": 224,
"height": 288,
"content": "This node will look for emails with the label you've selected"
},
"typeVersion": 1
},
{
"id": "813e7187-18e0-4d52-b39c-142de6041603",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
352,
-192
],
"parameters": {
"color": 7,
"width": 224,
"height": 288,
"content": "Please setup your QBO forwarding address here"
},
"typeVersion": 1
},
{
"id": "a50aac4a-8fb7-457b-a3dc-55879f50c547",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
592,
-192
],
"parameters": {
"color": 7,
"width": 448,
"height": 288,
"content": "This process prevents duplicate emails from being sent to QBO"
},
"typeVersion": 1
},
{
"id": "3d24c1e3-e40d-4f05-baff-7b5e34bec23b",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-160,
-352
],
"parameters": {
"color": 7,
"width": 256,
"height": 512,
"content": "The workflow executes when a new email with the matching label is received.\n\nA failsafe checks for emails that may have been missed"
},
"typeVersion": 1
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email || $json.Email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
-184,
-96
],
"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": [
-4,
-96
],
"name": "IF deliverable"
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email || $json.Email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
56,
-96
],
"name": "Verify Email (BillionVerify) 2",
"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": [
236,
-96
],
"name": "IF deliverable 2"
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email || $json.Email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
296,
-96
],
"name": "Verify Email (BillionVerify) 3",
"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": [
476,
-96
],
"name": "IF deliverable 3"
},
{
"parameters": {
"operation": "verify",
"email": "={{ $json.email || $json.Email }}",
"additionalOptions": {}
},
"type": "n8n-nodes-billionverify.billionVerify",
"typeVersion": 1,
"position": [
504,
-96
],
"name": "Verify Email (BillionVerify) 4",
"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": [
684,
-96
],
"name": "IF deliverable 4"
}
],
"connections": {
"Every Day at 8 AM": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"Remove the Old Label": {
"main": [
[
{
"node": "Verify Email (BillionVerify) 4",
"type": "main",
"index": 0
}
]
]
},
"Forward the Receipt to QBO": {
"main": [
[
{
"node": "Verify Email (BillionVerify) 3",
"type": "main",
"index": 0
}
]
]
},
"Get New Receipt from Email": {
"main": [
[
{
"node": "Verify Email (BillionVerify) 2",
"type": "main",
"index": 0
}
]
]
},
"New Email Receipt Received": {
"main": [
[
{
"node": "Verify Email (BillionVerify)",
"type": "main",
"index": 0
}
]
]
},
"Verify Email (BillionVerify)": {
"main": [
[
{
"node": "IF deliverable",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable": {
"main": [
[
{
"node": "Get New Receipt from Email",
"type": "main",
"index": 0
}
],
[]
]
},
"Verify Email (BillionVerify) 2": {
"main": [
[
{
"node": "IF deliverable 2",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable 2": {
"main": [
[
{
"node": "Forward the Receipt to QBO",
"type": "main",
"index": 0
}
],
[]
]
},
"Verify Email (BillionVerify) 3": {
"main": [
[
{
"node": "IF deliverable 3",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable 3": {
"main": [
[
{
"node": "Remove the Old Label",
"type": "main",
"index": 0
}
],
[]
]
},
"Verify Email (BillionVerify) 4": {
"main": [
[
{
"node": "IF deliverable 4",
"type": "main",
"index": 0
}
]
]
},
"IF deliverable 4": {
"main": [
[
{
"node": "Add the \"Processed\" Label",
"type": "main",
"index": 0
}
],
[]
]
}
},
"settings": {}
}Workflow templates with Quickbooks Online
Ready-to-use workflows that verify emails before Quickbooks Online sends.
How it works
- 1
Connect BillionVerify to QuickBooks Online via n8n, Integrately, or a custom REST API integration.
- 2
Trigger a verification check whenever a new customer or vendor record is created or updated in QuickBooks.
- 3
BillionVerify validates the email for syntax, domain health, SMTP deliverability, and disposable or catch-all status.
- 4
Records with undeliverable addresses are flagged in your workflow so your team can follow up before sending financial documents.
- 5
Proceed with invoice and payment reminder delivery knowing every address in your system is reachable.
When to use this
Verify client emails before invoice delivery
Before QuickBooks Online sends an invoice, run the recipient's email through BillionVerify. Catch invalid or catch-all addresses that would silently fail, ensuring your billing communications always reach the right inbox.
Clean imported contact lists
When migrating clients or vendors into QuickBooks Online from a spreadsheet or another system, bulk-verify all email addresses first. Remove dead addresses before they become failed reminders and overdue receivables.
FAQ
Why does email validity matter for accounting software?
Invoices and payment reminders sent to bad addresses result in late payments and awkward client conversations. BillionVerify prevents those failures by confirming deliverability before QuickBooks Online sends anything.
Can BillionVerify detect catch-all addresses?
Yes. Catch-all domains accept any email at the SMTP level but may never deliver it to a real mailbox. BillionVerify identifies these and flags them so you can decide whether to send or verify by another means.
Is this integration difficult to set up?
Not at all. Using Integrately you can connect BillionVerify to QuickBooks Online in a single click. The n8n community node and REST API are available for teams that prefer code-driven automation.
Does BillionVerify store the email addresses it checks?
BillionVerify processes addresses to return a verification result and does not permanently store your client data, keeping your financial records private.
Verify emails in Quickbooks Online
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