Advbox email verification with BillionVerify
Advbox is a CRM and legal practice management platform designed for law firms and legal professionals. Connecting BillionVerify to Advbox ensures that every client or prospect email added to your CRM is valid and reachable — keeping client communications reliable and your contact database accurate from day one.
Why verify before the send
In a legal CRM, an incorrect email address can mean a missed court deadline notification, an undelivered invoice, or a failed client onboarding. BillionVerify validates addresses before they are stored in Advbox, catching invalid mailboxes, disposable addresses, and role emails so that every entry in your client database is genuinely reachable.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Advbox sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Advbox + 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 Advbox contacts",
"message": "Replace this Gmail send with your Advbox 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 Advbox
Ready-to-use workflows that verify emails before Advbox sends.
How it works
- 1
Integrate BillionVerify with Advbox via the n8n community node, Integrately, or the REST API.
- 2
Trigger a verification request each time a new contact email is entered or imported into Advbox.
- 3
BillionVerify returns a verdict: valid, invalid, disposable, role address, or catch-all.
- 4
Automatically mark or quarantine invalid contacts within Advbox to prevent them from receiving communications.
- 5
Schedule periodic re-verification of your Advbox contact list to keep the database clean over time.
When to use this
Validate client emails at the point of intake
When a new client or lead is added to Advbox — whether through a web form or manual entry — BillionVerify confirms the address is valid before it is saved. This prevents data-entry errors and ensures critical legal communications reach the right person.
Audit existing CRM contacts before bulk outreach
Before sending newsletters, invoices, or case update emails to your Advbox contact list, run the list through BillionVerify. Remove or flag undeliverable addresses to protect your domain reputation and ensure key messages are not lost.
FAQ
Why is email verification especially important for a legal CRM?
Law firms send time-sensitive documents and notifications by email. An undeliverable address can mean a client misses a critical update. Verifying emails at intake ensures every contact in Advbox is reliably reachable.
Does BillionVerify integrate directly with Advbox?
BillionVerify connects to Advbox through the n8n community node or Integrately, both of which support workflow automation without custom code. Direct REST API integration is also available for bespoke setups.
Can I verify addresses already stored in Advbox?
Yes. Export your existing contact list, run a batch verification through BillionVerify, and reimport the results to flag or remove invalid addresses from your Advbox database.
What is a role address and why should I filter it out?
Role addresses like info@, support@, or admin@ are not tied to an individual and often route to shared inboxes or are unmonitored. BillionVerify detects these so you can decide whether they are appropriate contacts for your legal CRM.
Verify emails in Advbox
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