Coda email verification with BillionVerify
Coda is a flexible document and database platform where teams build living documents, trackers, and internal tools. When Coda docs collect or store contact information — through forms, API pushes, or manual entry — the email fields are only as useful as the data inside them.
Why verify before the send
Coda tables often serve as the operational backbone for outreach, onboarding, or event management workflows. Invalid email addresses in those tables cause campaign bounces, failed notifications, and wasted effort. BillionVerify validates addresses before they power your automations, keeping every row actionable.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Coda sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Coda + 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 Coda contacts",
"message": "Replace this Gmail send with your Coda 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 Coda
Ready-to-use workflows that verify emails before Coda sends.
How it works
- 1
Link Coda to BillionVerify using the n8n community node, Integrately, or direct REST API calls from a Coda automation.
- 2
Set a row trigger — such as a new row added to a specific table or a status column updated — to initiate verification.
- 3
BillionVerify evaluates the email address against syntax rules, live DNS checks, disposable domain lists, and catch-all detection.
- 4
Write the result back into a dedicated column in the same Coda table, giving every collaborator visibility into data quality.
- 5
Use Coda's native automation or connected workflows to filter, flag, or escalate rows based on verification outcome.
When to use this
Validate form responses captured in Coda tables
When a Coda form or embedded intake flow adds a new row with a contact email, trigger BillionVerify to verify that address. Add a verification status column so your team instantly knows which records are safe to contact.
Prepare email lists for outreach campaigns
Before exporting a Coda table to an email platform, run the entire list through BillionVerify. Remove or quarantine invalid and disposable addresses so your campaign starts with a clean, deliverable audience.
FAQ
Can BillionVerify write results directly back to a Coda table?
Yes. Using n8n or the Coda API alongside BillionVerify's REST API, you can verify an address and update the corresponding row in your Coda table with the verification status in a single automated workflow.
What is the difference between 'invalid' and 'risky' verification results?
Invalid means the address is definitively undeliverable — bad syntax, nonexistent domain, or no mail server. Risky covers addresses that may deliver but carry uncertainty, such as catch-all domains or newly registered addresses.
Is BillionVerify suitable for small Coda-based projects as well as large teams?
Yes. BillionVerify's credit-based model scales from a few hundred verifications for a small event list all the way to millions for enterprise-scale operations, with no minimum commitment required.
Verify emails in Coda
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