One API.
Three validations.
Validate an address, email, and phone number in a single POST request. Sub-150ms. No SFTP. No sales cycle. 100 free validations to start.
Three Validation Problems. Three Different APIs. One Mess.
Building address autocomplete, email SMTP checks, and phone carrier lookups in-house means months of integration work, inconsistent latency, and three separate vendor relationships to maintain.
Weeks of Integration Work
Address autocomplete, SMTP email verification, and carrier phone lookups each require separate vendor contracts, separate SDKs, and separate error handling. It's a project, not a feature.
Inconsistent Latency at Scale
Stitching together multiple third-party services means variable latency, unpredictable timeouts, and no unified SLA. A slow validation check at form submission costs you conversions.
Poor Docs Kill Velocity
Underdocumented APIs waste engineering hours. Inconsistent error formats across vendors mean every edge case becomes a debugging session. Your team ships slower than it should.
One call. Three validations.
Validate an address, email, and phone in a single request. Sub-100ms response. No SFTP required.
curl -X POST https://api.dqverify.com/v1/validate \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"address": "350 5th Ave, New York NY",
"email": "john@company.com",
"phone": "+1 212 555 0101"
}'{
"address": {
"status": "valid",
"standardized": "350 5TH AVE, NEW YORK, NY 10118",
"dpv": "confirmed",
"zip4": "10118-0110"
},
"email": {
"status": "deliverable",
"risk": "low",
"smtp": "passed"
},
"phone": {
"status": "active",
"type": "landline",
"carrier": "Verizon"
},
"response_ms": 74
}Integrate address, email, and phone validation in under 5 minutes.
Two integration paths — REST API or bulk CSV upload — same verified results, no sales call required.
Two paths, same result: accurate addresses, deliverable emails, and verified phone numbers — without a sales call.
Upload your data or connect via API
Drag-and-drop a CSV file or make a single REST API call. No sales call. No setup fee. Your first 100 verifications are completely free.
- No file size limit on CSV batch
- Results back in seconds
- SDKs for Node, Python, PHP, Go
curl -X POST https://api.dqverify.com/v1/validate \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"address": "350 5th Ave, New York NY",
"email": "john@company.com",
"phone": "+1 212 555 0101"
}'DQVerify verifies in real time
Our engine validates every address against 240+ international postal databases (USPS CASS certified for the US), confirms each email inbox actually exists, and looks up every phone number with live carrier data — all in parallel, all in one pass.
- All 3 verifications run in parallel
- USPS CASS certified for addresses
- Risk scoring on every email
{
"address": {
"status": "valid",
"standardized": "350 5TH AVE, NEW YORK, NY 10118",
"dpv": "confirmed",
"zip4": "10118-0110"
},
"email": {
"status": "deliverable",
"risk": "low",
"smtp": "passed"
},
"phone": {
"status": "active",
"type": "landline",
"carrier": "Verizon"
},
"response_ms": 112
}Download results or push to your CRM
Get a clean, enriched file back instantly. Or push verified records directly to Salesforce and Shopify — no manual export steps.
- Enriched CSV with 6 new columns
- Direct CRM sync — no manual export
- Webhook support for custom pipelines
CRM & Connectors Available*
Push verified data to
Ready in under 5 minutes
No credit card · No sales call · 100 free verifications
The Triple-Win
One integration. Compounding returns for your end users, your application, and your engineering team.
The End User
- Real-time address autocomplete — no manual re-entry
- Instant email typo correction before form submission
- Phone validation that prevents downstream delivery failures
- Frictionless forms that feel native and fast
Your Application
- <150ms average response time — imperceptible at any scale
- 10B+ queries processed per year on enterprise infrastructure
- 240+ international postal databases in a single API call
- Compatible with AWS, Azure, GCP, and Heroku out of the box
Your Dev Team
- Typed SDKs for Node.js, Python, PHP, and Go
- Sandbox environment for testing — no production data required
- Unified error schema across all three validation types
- API key in 30 seconds, no sales cycle, no SFTP
Enterprise Scale. Developer Simplicity.
DQVerify's infrastructure handles the load of global enterprises while staying simple enough to integrate in an afternoon.
10B+
Queries per year
<150ms
Avg response time
240+
Postal databases
99.9%
Uptime SLA
DQVerify functions seamlessly across all major cloud providers. Whether you're running on AWS Lambda, Azure Functions, GCP Cloud Run, or a Heroku dyno — the API integrates without infrastructure changes.
See what bad data
has been costing you.
Drop in your data, get results in minutes. No sales call, no contract, no setup headaches.