What does FirstSales email verification actually check?

It validates each address end to end: syntax, domain, and mailbox existence, then screens for hard bounces, spam traps, role-based addresses, catch-all domains, and duplicates. Every contact is tagged Active, Risky, or Auto-Suspended so you always know which ones are safe to send to.

Is the email verification really free?

Yes. Verification and list cleaning are included with FirstSales and run unlimited, so there are no per-credit fees and no separate verifier subscription to buy. A clean list never becomes an extra line item on your bill.

Do I have to run verification manually?

No. FirstSales verifies your list automatically the moment contacts are imported or synced, and then keeps re-testing them in the background. You don't export CSVs, buy credits, or remember to run anything, it just stays clean on its own.

What do the Active, Risky, and Auto-Suspended statuses mean?

Active means the address verified clean and is safe to send to. Risky means something looks off, like a catch-all or stale inbox, and it's held back from sending. Auto-Suspended means FirstSales pulled the contact entirely because it became likely to bounce or hurt your reputation.

How does verification protect my sender reputation?

Bounces and spam traps are the fastest way to damage your domain. By catching bad addresses before they're ever sent to, and re-testing as your list ages, FirstSales keeps your bounce rate low and your reputation healthy, which is what keeps 87% of your emails in the primary inbox.

Why re-test a list that was already verified?

Because inboxes go stale and people change jobs, a list that was clean last month often isn't clean today. FirstSales re-verifies contacts continuously and auto-suspends any address that turns risky, so you're never sending to addresses that have quietly gone bad.

Can I import my existing list and clean it?

Yes. Upload a CSV, paste your contacts, or sync from your CRM, and FirstSales verifies and de-duplicates everyone on import. Risky and dead addresses are flagged and held back before your first send, so you start with a list that's already clean.

How is this different from a standalone email verifier?

Standalone verifiers check your list once, charge per credit, and leave the rest to you, so you still have to export, re-import, and remember to re-run them. FirstSales builds verification into the same place you send from, runs it free and unlimited, and keeps re-testing automatically, so your list and your reputation stay clean without the busywork.

Email Verification · clean, verify, and re-test, automatically

Free email verification that cleans your list before you send

FirstSales verifies every address and scrubs your list before the first send, removing bounces, duplicates, role-based addresses, catch-alls, and risky contacts. Then it keeps re-testing in the background, so you protect your sender reputation and land 87% in the primary inbox without lifting a finger.

Catches bounces, spam traps, duplicates, and role-based addresses
Verifies before you send and re-tests your list continuously
Clear statuses: Active, Risky, and Auto-Suspended, set for you
Free and unlimited, so a clean list never costs you extra

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$1 for 3 days · Cancel anytime · No separate verifier to pay for

Trusted by founders & sales teams

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FirstSales contacts table with Active, Risky, and Auto-Suspended email verification statuses

The Dirty-List Problem

One bad address can quietly burn your whole domain

Most cold-email tools happily send to whatever you upload. But a list full of bounces, spam traps, and dead inboxes is the fastest way to tank your sender reputation, and once that happens, even your good emails stop reaching real people. Verification is not optional. It is the thing that keeps every other send working.

Bounces and Spam Traps Are Reputation Poison

Every hard bounce and every spam trap tells inbox providers you don't know who you're emailing. A handful is all it takes to get throttled or blocked. Sending to a dirty list doesn't just waste the email, it drags down the deliverability of everything you send after it.

You Can't Eyeball a Bad List

Role-based addresses, catch-all domains, and stale inboxes look completely fine in a spreadsheet. There's no way to spot them by hand. So most people find out the hard way, after the bounce rate spikes and their domain is already in trouble.

We Clean Before You Send, Then Keep Checking

FirstSales verifies every contact before the first send and re-tests your list continuously, marking each one Active, Risky, or Auto-Suspended. Bad addresses never get a chance to hurt you. The result is a list that stays clean on its own and a reputation that keeps earning the inbox.

From Messy List to Clean Sender

Verified and cleaned in minutes, then forever

There's no separate verifier to buy, no CSV to shuttle between tools, and no credits to ration. Import or sync your list, let FirstSales verify and clean it automatically, and it keeps re-testing every contact in the background from then on.

STEP 1 • 2 MINUTES

Import or sync your list

Upload a CSV, paste your contacts, or sync from your CRM. FirstSales pulls everyone in and immediately starts checking each address, so verification begins the moment your list lands, with nothing extra to set up.

CSV, paste, or CRM sync Bring contacts in however you already keep them.

Verification starts instantly Every new contact is checked the moment it's added.

Duplicates merged on import Repeat addresses are caught and collapsed automatically.

Read the docs

Importing a contact list into FirstSales for automatic email verification

STEP 2 • RUNS AUTOMATICALLY

It verifies and cleans the list for you

FirstSales checks each address for validity, bounces, spam traps, role-based and catch-all domains, then tags every contact Active, Risky, or Auto-Suspended. Risky and dead addresses are held back before they ever cost you a send.

Catches what spreadsheets hide Traps, catch-alls, and role addresses flagged for you.

Clear, honest statuses Active, Risky, or Auto-Suspended, set on every contact.

Bad addresses held back Risky contacts are suspended before the first send.

Read the docs

FirstSales email verification dashboard showing Active, Risky, and Auto-Suspended contact statuses

STEP 3 • CONTINUOUS

It re-tests your list continuously

Inboxes go stale and people change jobs, so a list that was clean last month isn't clean today. FirstSales keeps re-verifying your contacts in the background and auto-suspends any address that turns risky, so your list stays healthy without a single manual scrub.

Always re-checking Contacts are re-verified on an ongoing schedule.

Auto-suspend on risk Addresses that go bad are pulled before they bounce.

Reputation protected A clean list keeps 87% landing in the primary inbox.

Read the docs

FirstSales continuously re-testing a contact list and auto-suspending risky addresses

Proof, Not Promises

Senders who stopped burning their lists

Teams use FirstSales to keep their lists clean and their domains healthy, and the deliverability follows.

Loved by founders & SDRs

If you are looking to fix your sales pipeline, you should definitely try. @iuditg is the OG in cold emailing, and the product they have built- is futuristic and screams a deep understanding of email marketing. + My open rate has increased drastically, + The UI and UX are easy to understand, even for a beginner like me.

Pooja Dhole@ThisIsPoojaD

Open rate increased drasticallyCleaner list, fewer bounces

Verification that runs before, during, and after every send.

Standalone verifiers check your list once, charge you per credit, and leave the rest to you. FirstSales verifies before you send, re-tests as you go, and keeps your list clean on its own, all included.

PRE-SEND VERIFICATION

It catches the bad addresses before you send

Before a single email goes out, FirstSales validates every address and screens for bounces, spam traps, role-based inboxes, catch-all domains, and duplicates, so the contacts most likely to hurt you never reach the queue.

Validates every address Syntax, domain, and mailbox checks on each contact.

Flags traps and catch-alls The risky addresses you can't spot are caught for you.

Removes duplicates Repeat contacts collapsed so you never double-send.

Read the docs

FirstSales pre-send email verification screening bounces, traps, and risky addresses

CONTINUOUS RE-TESTING

It re-tests and auto-suspends as your list ages

A clean list doesn't stay clean. FirstSales keeps re-verifying contacts in the background, marks them Active, Risky, or Auto-Suspended, and pulls anything that goes bad, so a stale address never costs you a bounce or a complaint.

Ongoing re-verification Contacts re-checked on a schedule, not just once.

Auto-suspend on risk Addresses that turn risky are held back automatically.

Status you can trust Active, Risky, or Auto-Suspended on every contact.

Read the docs

FirstSales continuously re-testing contacts and tagging them Active, Risky, or Auto-Suspended

FREE & UNLIMITED

It's free, unlimited, and built into every send

No per-credit pricing, no separate verifier subscription, no CSV ping-pong between tools. Verification and list cleaning are included with FirstSales and run unlimited, so keeping a clean list never becomes a line item.

No credits to ration Verify as many contacts as you need, always.

Nothing extra to buy No standalone verifier subscription on top.

Built into sending Cleaning happens where you actually send from.

Read the docs

FirstSales free unlimited email verification included with every plan

Dirty list vs clean sender

Bolt-on verifiers vs built-in cleaning

Same goal, a list that lands in the inbox, reached two very different ways. Here's what changes when verification is built into your sending instead of a separate tool you have to remember to run.

Separate verifier + dirty listPay per credit, run it once, and hope the list stays clean.

Pay per verification credit: A separate subscription that charges by the address, every time.
Verified once, then ignored: Your list rots between checks and bounces creep back in.
CSV shuttled between tools: Export, verify, re-import, and pray nothing got mangled.
Bounces hit your reputation: Bad addresses slip into sends and quietly burn your domain.
Spam traps go undetected: Traps and catch-alls look fine until your sending gets blocked.
Cleaning is your job: You have to remember to run it, every list, every time.

FirstSales built-in verificationFree, unlimited, automatic, and always re-testing.

Free and unlimited: Verify every contact at no extra cost, with no credits to count.
Re-tested continuously: Contacts are re-verified in the background so the list stays clean.
No exporting, ever: Verification lives in the same place you send from.
Reputation protected: Risky addresses are auto-suspended before they can bounce.
Traps caught for you: Spam traps, catch-alls, and role addresses flagged automatically.
Cleaning is automatic: It runs on its own, on every list, without you lifting a finger.

Built-in vs paid add-on

FirstSales vs standalone verifiers & no-check tools

Some tools make you buy a separate verifier; others let you send to anything and skip checking entirely. Real verification has to run before, during, and after every send, and cost you nothing. Here's how the jobs compare.

Email verification capability and pricing comparison between FirstSales and other tools
What verification should do	FirstSales	Other tools
Verifies before the first send	Included	Manual
Catches spam traps and catch-alls	Included	Varies
Removes duplicates and role addresses	Included	You do it
Re-tests the list continuously	Included	One-time
Auto-suspends risky contacts	Included	Manual
Inbox placement rate	87% average	60-70% average
Verification pricing	Free, unlimited	Pay per credit
Separate tool to manage	Built in	Add-on

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Clean your list for $1

Verify every contact, strip the bounces and traps, and keep re-testing automatically. Free, unlimited, and built into every send, no separate verifier required.

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$1 for 3 days · Cancel anytime · 87% inbox placement

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