Lifetime deal355 of 1000 seats left. Pay once, use MailOptimal forever. InfraOptimal from $1/mailbox.Claim your seat
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Product / Email Finder

Find and verify any work email

Look up a verified work email from a name and company, or clean a whole list in bulk. Real-time SMTP checks catch invalids and spam traps before they touch your sending reputation.

14-day free trialNo credit cardCancel any time
app.mailoptimal.comLive demo
VerifiedBefore it enters a campaign
Find + verifyIn one search
Real time
SMTP checks, never a stale cache
0–100
Confidence score on every result
Bulk
Clean a whole list in one upload
API
REST endpoints and webhooks
Email FinderFindBulk cleaningSMTP checksConfidenceCredits and APIFAQStart free
Find

A name and a company is enough

Enter a person and their company. MailOptimal checks the company’s domain, known email patterns and multiple data sources, then returns the best match with a confidence score.

  • Company website and DNS
  • Verified email patterns
  • Best match plus ranked alternatives
Name
Sarah Chen
Company
acme.com
sarah.chen@acme.com
Pattern match · verified at lookup
98
Recent lookups
m.rossi@lattice.io
Marco Rossi · Lattice
Found
d.lee@northbeam.com
David Lee · Northbeam
Found
Found from
Company websiteDNSVerified patternsRanked alternatives
leads.csv
2,000 rows uploaded
98% deliverable
Valid 1,842Risky 120Invalid 38
Keep 1,842 valid
Exported as a clean list
Export
!
Flag 120 risky and catch-all
Review before sending
Flagged
×
Remove 38 invalid
Never reach a campaign
Removed

Example: a 2,000-row list after cleaning.

Bulk cleaning

Upload a list, get back only what is safe

Drop in a CSV and every address is checked. Invalids are removed, risky and catch-all addresses are flagged, and you export a list you can send to.

Verification

Checked live at lookup

Every address runs through syntax, domain, MX and mailbox checks at the moment you look it up, with greylisting handled, so results never come from a stale cache.

sarah.chen@acme.com
Checked live, just now
Valid
Syntax and formatPass
Domain and MX resolvedPass
Mailbox accepts mailPass
Greylisting handledPass
Checked live, every lookup
SyntaxDomainMXMailboxGreylisting handled
Confidence scores
0 to 100 on every result
sarah.chen@acme.com98
Safe to send
m.rossi@lattice.io71
Catch-all, send with care
j.doe@startup.xyz38
Likely invalid, skip
Confidence scoring

Know what is safe before you send

Every result is scored from 0 to 100, so you can send to the sure ones, treat catch-alls with care and skip the rest.

Credits and API

One credit pool, and an API when you need it

Finding and verifying draw on the same credits. Verify inside your own tools with the REST API and webhooks.

POST /v1/verify
{ "email": "sarah.chen@acme.com" }
→ { "status": "valid", "score": 98 }
Credits left
24,180
Used today
1,920
Minimum spend
None
Use it from
The web appCSV uploadREST APIWebhooks
Works with

Part of one platform.

See the whole platform
Lead Finder
700M+ verified B2B contacts
Phone Finder
Verified mobiles and direct dials
Email Outreach
AI sequences across unlimited mailboxes
Deliverability Center
One health score for every sender
FAQ

Questions, answered.

Still unsure? Book a demo and we will walk you through it.

Book a demo
How accurate is verification?
Real-time SMTP and MX checks deliver high accuracy and flag catch-all or risky addresses so you only send to safe inboxes.
Do credits expire?
No. Email Finder credits are one-time packs that never expire, use them whenever you need.
Can I verify a list I already have?
Yes. Upload any list for bulk verification, and invalids are removed before you export.
Is there an API?
Yes. Verify emails programmatically inside your own tools with the MailOptimal API.
InfraOptimal

Send it from an IP that is only yours.

InfraOptimal mailboxes from $1.00 with a dedicated IP, DNS and warmup included. A quarter of the Google and Microsoft price.

See InfraOptimal
Lifetime deal · limited seatsPay once. Use MailOptimal forever.Lifetime plans from $79, one payment. Sold out when this batch of 1000 seats is gone.355 seats left645 of 1000 claimedClaim your seat InfraOptimalMailboxes from $1 / monthDedicated IP, DNS and warmup included. 500 mailboxes for $500 a month, against $2,000 on Google or Microsoft.$1per mailbox / monthSee InfraOptimal

Send to addresses that actually exist

Find and verify work emails, free for 14 days.