Accelo email verification with BillionVerify
Accelo is a CRM and service operations platform built for professional service businesses. Integrating BillionVerify with Accelo keeps your client and prospect email data accurate — so automated communications, invoices, and project updates reliably reach the right people without bouncing.
Why verify before the send
In a professional services CRM, a single bad email address can mean a missed proposal, a lost client communication, or an unpaid invoice. BillionVerify validates every contact email before it's saved or used in outreach, catching invalid mailboxes, role addresses, and disposable domains that would otherwise silently fail your delivery attempts and erode your sender reputation.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Accelo sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Accelo + 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 Accelo contacts",
"message": "Replace this Gmail send with your Accelo 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 Accelo
Ready-to-use workflows that verify emails before Accelo sends.
How it works
- 1
Connect BillionVerify to Accelo using the n8n community node, Integrately, or the REST API.
- 2
Trigger email verification whenever a new contact is created or an email address is updated in Accelo.
- 3
BillionVerify checks deliverability, domain validity, SMTP response, and flags disposable or role-based addresses.
- 4
Contacts with unverified or invalid addresses are flagged in Accelo for review before communications are sent.
- 5
Maintain a clean, reliable CRM that supports confident client outreach and automated follow-ups.
When to use this
Validate client contacts on entry
Verify email addresses when new clients or prospects are added to Accelo. BillionVerify confirms each address is real and deliverable before it's stored, preventing bad data from accumulating in your CRM.
Protect automated project and invoice communications
Accelo sends automated emails for project updates, time approvals, and invoices. Pre-verifying recipient addresses with BillionVerify ensures these critical communications don't bounce, keeping client relationships and cash flow on track.
FAQ
Why is email verification important for a professional services CRM?
Professional services rely on timely, accurate email communication for proposals, project updates, and invoicing. Bad addresses cause bounces that damage sender reputation and can mean missed business-critical messages.
Can BillionVerify run in real time as contacts are added to Accelo?
Yes. Using the n8n community node or REST API, you can trigger verification immediately when a new contact record is created, ensuring bad addresses are caught before they're used.
What does BillionVerify check beyond basic format validation?
Beyond syntax, BillionVerify checks DNS records, MX configuration, SMTP mailbox existence, and screens for disposable providers and role-based prefixes like info@ or noreply@.
Does BillionVerify support bulk verification for existing Accelo contacts?
Yes. You can export your existing contact list and run it through BillionVerify's bulk verification to clean historical data alongside real-time validation for new entries.
Verify emails in Accelo
Create a free account, grab your API key, and stop bounces before they happen.
Get started free