Omnisend email verification with BillionVerify
Omnisend is an email and SMS marketing platform built for e-commerce brands, offering automation, segmentation, and omnichannel campaigns. Integrating BillionVerify with Omnisend keeps your contact lists free of invalid, disposable, and undeliverable addresses so every campaign performs at its best.
Why verify before the send
E-commerce subscriber lists grow fast through pop-ups, checkout forms, and promotional campaigns — but so does the proportion of fake and low-quality signups. Sending to unverified lists inflates bounce rates, triggers spam filters, and can get your Omnisend account flagged. BillionVerify catches these addresses before they cause damage.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Omnisend sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Omnisend + 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 Omnisend contacts",
"message": "Replace this Gmail send with your Omnisend 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 Omnisend
Ready-to-use workflows that verify emails before Omnisend sends.
How it works
- 1
Connect BillionVerify to Omnisend using the n8n community node, Integrately's 1-click integration, or the REST API.
- 2
Trigger verification when new contacts are added to Omnisend — via signup forms, import, or API.
- 3
BillionVerify checks each address against its verification engine, flagging invalid, disposable, role, and catch-all addresses.
- 4
Automatically tag or suppress addresses that fail verification so Omnisend only sends to confirmed, deliverable contacts.
- 5
Monitor list quality over time and re-verify older segments periodically to remove addresses that have since become invalid.
When to use this
Verify new subscribers at the point of signup
Connect BillionVerify to your Omnisend signup forms so each address is checked for validity the moment a shopper subscribes. Invalid and disposable entries are caught before they ever enter your list.
Scrub existing contact lists before major campaigns
Before launching a sale, product launch, or seasonal campaign in Omnisend, run your contact segments through BillionVerify to identify and suppress undeliverable addresses and protect your sender reputation.
Keep automation flows free of bad contacts
Omnisend automation sequences — welcome series, abandoned cart, win-back — should only target real inboxes. Verifying contacts before they enter these flows improves open rates and prevents automation-triggered bounces.
FAQ
Will verifying contacts improve my Omnisend campaign metrics?
Yes. Removing invalid and undeliverable addresses directly lowers bounce rates, improves open and click rates, and signals to email providers that you maintain a healthy, engaged list.
How does BillionVerify handle role-based email addresses?
Addresses like info@, admin@, or sales@ are flagged as role accounts. These are rarely monitored by a single individual and often lead to spam complaints, so filtering them improves campaign quality.
Can I verify in bulk before an Omnisend list import?
Yes. Upload your contact file to BillionVerify's bulk verification endpoint, download the results, and import only the verified contacts into Omnisend — keeping your list clean from the start.
Is real-time verification possible for Omnisend signup forms?
Yes. Using the REST API, you can validate addresses synchronously when a user submits a signup form, blocking disposable or clearly invalid addresses before they enter your Omnisend list.
Verify emails in Omnisend
Create a free account, grab your API key, and stop bounces before they happen.
Get started free