Trengo email verification with BillionVerify
Trengo is a team inbox and customer communication platform that consolidates messages from email, chat, and social channels into a single workspace. Verifying customer email addresses before storing or contacting them helps teams avoid wasted effort on undeliverable contacts.
Why verify before the send
Customer conversations in Trengo often involve email addresses collected through intake forms, live chat, or manual agent entry. Without verification, your team may spend time on bounced emails or contacts who used throwaway addresses, eroding both productivity and sender reputation.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Trengo sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key.
{
"name": "Verify emails before sending in Trengo + 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 Trengo contacts",
"message": "Replace this Gmail send with your Trengo 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 Trengo
Ready-to-use workflows that verify emails before Trengo sends.
How it works
- 1
Connect BillionVerify to your automation layer using the n8n community node, Integrately, or the REST API.
- 2
Trigger a verification flow whenever a new contact or conversation is created in Trengo.
- 3
Send the contact's email address to BillionVerify and receive a detailed deliverability result.
- 4
Tag or update the contact record in Trengo based on the verification outcome.
- 5
Route unverified or invalid contacts to a review queue rather than active communication threads.
When to use this
New contact deduplication and hygiene
When a new contact is created in Trengo, verify the email address with BillionVerify to catch disposable or malformed entries before they pollute your contact database or trigger outbound campaigns.
Support ticket email validation
For tickets submitted via email forms, run the sender address through BillionVerify to confirm it is real and reachable, ensuring follow-up messages actually land in a valid inbox.
FAQ
Does BillionVerify integrate directly with Trengo?
BillionVerify connects to Trengo through n8n automations, Integrately 1-click workflows, or the REST API, giving you flexibility to plug verification into whichever automation stack you use.
What happens to catch-all addresses?
Catch-all addresses accept any incoming message at the domain level, making deliverability uncertain. BillionVerify flags these separately so you can decide whether to include or exclude them based on your risk tolerance.
Can I verify emails in bulk for existing Trengo contacts?
Yes. Export your contact list, run a bulk verification job through the BillionVerify REST API, and re-import the results to tag contacts by deliverability status.
Verify emails in Trengo
Create a free account, grab your API key, and stop bounces before they happen.
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