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Open Source by Fliphats — Beta

Verify Every Email.
Protect Your
Sender Reputation.

Open-source email verification toolkit — real-time SMTP checks, DNS analysis, and risk scoring. Built for developers, maintained by Fliphats. Beta release.

Start Free — No Credit Card Try Live Demo
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4,200+ developers & marketers trust us

emailverifier.fliphats/verify
hello@company.com
hello@company.com Valid
91
✓
SMTP OK
✓
MX Valid
91
Score
0
Emails Verified
0
Accuracy Rate
0
Active Users
0
Avg Verify Time
0
Uptime SLA
Core Features

Everything you need to
clean your email list

From single lookups to bulk processing — our platform handles it all with enterprise reliability and developer-friendly APIs.

Real-Time SMTP Verification
Directly connects to mail servers to confirm whether a mailbox actually accepts messages — no guessing, no assumptions.
Bulk CSV Processing
Upload thousands of emails via CSV and get back a fully annotated export in minutes with parallel processing queues.
DNS & MX Deep Inspection
Validates MX records, checks SPF and DMARC policies, detects missing configurations, and flags domain hygiene issues.
AI Risk Scoring Engine
Every email gets a 0–100 deliverability confidence score aggregated from SMTP signals, DNS health, and behavioral patterns.
Disposable Email Detection
Blocks 12,000+ known disposable and temporary email providers — keep fake signups out of your funnels permanently.
Developer-First REST API
Integrate email verification into any stack with our RESTful API. JSON responses, rate-limiting, and full webhook support included.
Catch‑All Detection
Dual‑probe technique identifies domains that accept all addresses and caps risk‑scores appropriately.
Role‑Based Detection
Flags shared inboxes like info@, admin@, sales@ to protect engagement and sender reputation.
Human Signal via Gravatar
Optional Gravatar lookup provides a strong positive signal when a real person is behind the address.
Webhooks & Callbacks
Receive POST callbacks when deep SMTP checks finish so your systems stay in sync.
Local‑Only History
App stores your verification history in the browser — quick, privacy‑friendly, and exportable.
Open Source by Fliphats
Transparent, community‑driven tooling. Fork, extend, and contribute — Beta release.
How it Works

From upload to insight
in three steps

Clean, simple, and blazingly fast. No complex setup, no hidden configuration — just results.

1
Input Your Emails
Paste a single address, enter them manually, or upload a CSV file with thousands of addresses in one go.
2
Deep Verification
Our engine runs SMTP handshakes, DNS lookups, blacklist checks, disposable detection, and risk scoring in parallel.
3
Export Clean Results
Get a fully annotated report — filter by status, export to CSV, or pull results directly via API into your platform.
Testimonials

Loved by thousands of teams

From indie hackers to enterprise marketing teams — here's what they say.

"We reduced our bounce rate from 14% down to under 1% within two weeks of integrating emailverifier.fliphats. The bulk processing is incredibly fast and the scoring system is spot on."

JS
James Sullivan
Head of Growth · Launchpad CRM

"The REST API was up and running in under 30 minutes. Clean documentation, consistent responses, and the disposable email detection saved us from a massive spam wave during our product launch."

MK
Maya Krishnan
Backend Engineer · Flowbase

"Best-in-class verification tool. The risk scoring dashboard is brilliant — we now filter out risky signups automatically before they ever hit our CRM. Support team is incredibly responsive too."

RP
Ryan Park
Marketing Director · NovaSend
Get Started Today

Your cleanest email list
starts right now.

Join 4,200+ teams using emailverifier.fliphats to protect their sender reputation. Free to start, no credit card required.

Open Live App

100 free verifications every month · No credit card · Cancel anytime