Is my list data safe?

Yes. Addresses are processed under our Data Processing Agreement with strict access controls. Routine engineering review is performed on aggregate domain-level signals only, not individual addresses. Customer addresses are never sold, rented, or used for marketing.

Do I have to cancel EmailListVerify before switching?

No. Run a free 100 verifications in parallel against the same list, compare the results, and only cancel ELV when you’re satisfied.

Is the accuracy really better than EmailListVerify?

Yes. Postelist runs native real-time SMTP probes on every request and uses provider-aware oracles for Microsoft 365 federated tenants, iCloud, Yahoo, QQ, NetEase, and Proton. EmailListVerify leans on cached results and labels federated tenants as catch-all.

What file formats do you accept?

CSV with a header row, plain TXT, or paste-in via the dashboard. Up to 1,000,000 addresses per job. Results download as CSV with per-address verdict, reason code, and provider classification.

The EmailListVerify alternative
that’s 3× cheaper.

Same accuracy. No monthly subscription. No card. From one dollar per thousand emails — less the more you send.

Start Free100 Verifications Included

01Price

$1/ 1K

Pay only when you send · less at scale

02Throughput

50,000^*/ min

Native real-time SMTP

03Accuracy

99.99%

Catch-all, resolved per‑mailbox

Postelist vs EmailListVerify

Same list. Two verdicts.

Eight rows of differences. Then the price math.

Postelist (us)

EmailListVerify

Price per 10,000

$10

$30

Accuracy

99.99%

~97%

Catch-all resolution

Resolved per-mailbox

Returned as “catch-all”

Pay-as-you-go

Yes

Throughput

50,000 / min

~8,000 / min

QQ & NetEase support

Native oracles

Native real-time SMTP

Every check

Partial (cached)

Microsoft Enterprise domains

Resolved

Catch-all

volume

10,000

Verifications

You pay

$10

$1.00 per 1,000

Get 10,000 Verifications · $10

Pay once. No subscription. Credits never expire.

At 10,000 verifications, Postelist is

Postelist

$10

our price

ZeroBounce

$129

13×cheaper

NeverBounce

$50

5×cheaper

EmailListVerify

$30

3×cheaper

Cheaper. And more accurate.

Accurate now

Every verdict reflects the mailbox today, not a stale cache from last quarter.

Every major inbox

Gmail, Outlook, Yahoo, Proton, iCloud, and custom domains.

QQ & NetEase

The only validator that accurately verifies Chinese providers.

Why people switch

Three reasons EmailListVerify customers move to us.

01Price
3×cheaper. Same list.
$1 per thousand emails — less at scale.
Side-by-side10,000-email list
EmailListVerify$30 / month
Postelist$10 once
No subscription. Pay only for what you actually send.
02Accuracy
99.99%resolved. Not catch-all.
Per-mailbox resolution on federated tenants.
Side-by-sideMS 365 federated
EmailListVerifyreturns “catch-all”
Postelistresolved per address
Native oracles for Microsoft, Google, iCloud, Yahoo, Proton, QQ, NetEase.
03Coverage
100%coverage. Major providers + business.
Asian inboxes, enterprise tenants, and any business domain.
Side-by-sideQQ, NetEase, business
EmailListVerifyno native / catch-all
Postelistnative + custom MX
Built for global lists and business mailboxes, not just gmail.com.

Live throughput

The fastest verifier on the market.

Native real-time SMTP across an IPv6 pool with provider-aware concurrency control. Fifty thousand verifications per minute. We finish a million-row file before ELV finishes a quarter of it.

Postelistverifications / minute

0^*

Steady-state, sustained

Postelist0/min

EmailListVerify0/min

10,000emails12sec

100,000emails2min

1,000,000emails20min

Switching is fastUnder a minute

Three steps. Under a minute.

Same CSV format ELV expects. You don’t have to cancel ELV first — run a free 100 against the same list and decide.

01
Create your free account
100 verifications on signup. No card required. Same email format as EmailListVerify, ready in 30 seconds.
02
Upload your list or call the API
CSV with an “email” column, plain TXT, or one HTTPS POST. The API is a drop-in for ELV’s shape — rename the host and you’re done.
03
Download or pipe to your ESP
Download the cleaned list as CSV, or pipe verdicts straight into your ESP. Eight native destinations, listed below.

Pipe verdicts into the tools you already run.

Every verdict flows out the moment it lands. Invalids suppressed, deliverable contacts tagged, sending lists kept quietly clean. Eight destinations, zero duct tape.

Webhook
POST every verdict to any signed URL.
HMAC
SendGrid
Sync invalids straight to suppression.
API key
Klaviyo
Suppress invalids from flows and campaigns.
Private key
ActiveCampaign
Tag contacts by deliverability verdict.
API key
Customer.io
Keep the people file free of bounces.
Track API
Zapier
Route verdicts into 7,000+ apps.
REST hook
Mailchimp
Archive and clean your audience automatically.
OAuth
HubSpot
Stamp contacts with verification state.
OAuth

FAQ

Common questions.

Everything we get asked before someone switches from EmailListVerify.

Get your 100 free verifications.

No card required. Takes 30 seconds.

Start Free 100 Verifications Included

Throughput tested without iCloud addresses. iCloud-heavy lists may run slower; Apple’s MX rate-limits on a per-IP-pool basis and we throttle to stay polite.

The EmailListVerify alternative
that’s 3× cheaper.

Same list. Two verdicts.

Three reasons EmailListVerify customers move to us.

$1 per thousand emails — less at scale.

Per-mailbox resolution on federated tenants.

Asian inboxes, enterprise tenants, and any business domain.

The fastest verifier on the market.

Three steps. Under a minute.

Pipe verdicts into the tools you already run.

Common questions.

Get your 100 free verifications.

The EmailListVerify alternative that’s 3× cheaper.

Same list. Two verdicts.

$1 per thousand emails — less at scale.

Per-mailbox resolution on federated tenants.

Asian inboxes, enterprise tenants, and any business domain.

Three steps. Under a minute.

Pipe verdicts into the tools you already run.

Get your 100 free verifications.

The EmailListVerify alternative
that’s 3× cheaper.