Fastfield Forms email verification with BillionVerify
Fastfield Forms is a mobile forms platform used to capture data in the field — inspections, surveys, work orders, and more. When those forms collect email addresses, BillionVerify validates them at submission time, ensuring every contact record that flows from the field into your back office is accurate and reachable.
Why verify before the send
Field data entry is prone to errors — rushed submissions, typos on mobile keyboards, and placeholder emails are common. An invalid address in a work order or inspection form can mean a client never receives their report. BillionVerify catches these issues at submission, before bad data spreads through your systems.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Fastfield Forms sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Fastfield Forms + 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 Fastfield Forms contacts",
"message": "Replace this Gmail send with your Fastfield Forms 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 Fastfield Forms
Ready-to-use workflows that verify emails before Fastfield Forms sends.
How it works
- 1
Connect Fastfield Forms to BillionVerify using n8n, Integrately, or the REST API.
- 2
Trigger verification when a form is submitted or when new records are synced to your data destination.
- 3
BillionVerify evaluates each email for syntax, domain validity, MX records, and mailbox existence.
- 4
The verification result is attached to the record or used to route the workflow — valid contacts proceed, invalid ones are flagged.
- 5
Clean, verified contact data flows into your downstream tools with confidence.
When to use this
Validate client emails on form submission
When a Fastfield Forms submission includes a client or contact email, BillionVerify verifies it automatically. Catch typos and invalid addresses before the record is synced to your CRM or project management system.
Ensure report delivery contacts are real
Field inspections and surveys often include an email address for sending the final report. BillionVerify confirms that address exists and is deliverable, so your reports always reach the right person.
Audit contact data from historical submissions
Run a batch verification over email addresses collected from past Fastfield Forms submissions. Identify and correct stale or invalid contacts before they cause problems in your outreach or reporting.
FAQ
Why does email verification matter for mobile field forms?
Mobile entry increases typo risk, and field workers may accept placeholder emails from contacts. Verifying addresses at submission prevents these errors from reaching your CRM, billing system, or report delivery queue.
How do I connect Fastfield Forms with BillionVerify?
Use Integrately for a no-code setup, the n8n community node for a visual workflow, or the BillionVerify REST API if you have an existing integration pipeline.
Can I verify emails in bulk from older form submissions?
Yes. Export your historical email data and pass it to BillionVerify's bulk verification endpoint to clean up existing records in one automated run.
What types of problematic addresses does BillionVerify flag?
It flags syntactically invalid addresses, non-existent mailboxes, disposable or temporary providers, role-based accounts like admin@ or noreply@, and catch-all domains that accept any address.
Verify emails in Fastfield Forms
Create a free account, grab your API key, and stop bounces before they happen.
Get started free