start for free
start for free
email validation · coming soon

Validate any email list. Before you send.

Send up to 1,000 addresses in one call. MoltSets checks each against its validation data and returns a verdict: valid, invalid, catch-all, spam trap, abuse, do not mail or unknown.

coming soon read the docs
what comes back

One list in, a verdict per address out

send

The address checks out against MoltSets’ validation data.

  • valid

suppress

Take these off the list before you send.

  • invalid
  • spamtrap
  • abuse, with spam_complainer for recent complainers
  • do_not_mail

your call

The mail server accepts everything, so the address can’t be confirmed either way.

  • catch-all

no signal

No spam sighting in the last 6 months and no validation in the last 60 days.

  • unknown
  • Free: no token charged
the call

Up to 1,000 addresses. One call.

validate_emails takes a plain list of addresses and returns one verdict for each unique address. No regular tokens are charged, only validation tokens.

read the docs
  1. 01emails: [ ... ]Pass 1 to 1,000 plaintext addresses per call.
  2. 02case + spacesIgnored, so Sam@Acme.com and sam@acme.com are the same address.
  3. 03duplicatesCollapsed. You get one result per unique address.
  4. 041 verdict1 validation token.
  5. 05unknownFree, as are malformed addresses.
pay for results

No signal? Not charged.

You spend one validation token per verdict. When MoltSets has nothing to tell you about an address, you don’t pay for it.

  • Unknown results cost nothing.
  • Malformed addresses cost nothing.
  • Duplicates are collapsed, so you never pay twice for one address in a call.
  • Validation tokens are a separate balance from your regular and phone tokens.
use cases

When teams validate

01 / Clean before you send

Run a list through before a campaign goes out and send only to addresses that check out.

02 / Suppress the risky ones

Pull spam traps, complainers and invalid addresses out of your list before they hurt your sender reputation.

03 / Check outside lists

Validate addresses that didn’t come from MoltSets: form fills, event lists, old CRM records or another vendor’s data.

04 / Validate in your agent

Have your AI agent check a batch of up to 1,000 addresses in one call before it writes to your CRM or sequencer.

add-on

An add-on to a paid Standard Subscription

Validation tokens sit on top of a paid Standard Subscription. They aren’t available on the Free plan. Pick your plan first, then add validation tokens.

see standard subscriptions
  • Free: validation tokens not available
  • Solo, $27/month: add validation tokens
  • Pro, $97/month: add validation tokens
  • Team, $397/month: add validation tokens
  • Max, $997/month: add validation tokens
pricing

Validation tokens from $0.25 per 1k

One token per verdict, up to 1,000 addresses per call. The more you subscribe to, the less each 1k costs.

  • Charged per verdict, not per address sent
  • Unknown and malformed addresses are free
  • Requires a paid Standard Subscription
tokens / monthvolumeprice
75,000~2,500 / day $19/moHobby · $0.253 / 1k
195,000~6,500 / day $49/moDeveloper · $0.251 / 1k
395,000~13,167 / day $99/moGrowth · $0.251 / 1k
595,000~19,833 / day $149/moBusiness · $0.250 / 1k
1,000,000~33,333 / day $250/moScale · $0.250 / 1k

Verdicts and costs are in the Validate Emails docs.

compare

Validate 1M emails for $250 a month

What the same monthly volume costs with the main email verification providers. Unknown results are never charged.

$0.25per 1,000 validations, on every plan
8x to 23xcheaper than ZeroBounce, Kickbox and Bouncer
$0for unknown and malformed results
emails / month MoltSets ZeroBounce NeverBounce Kickbox Bouncer MillionVerifier
75,000Hobby $19 $449 $159 $425 $400 $178
195,000Developer $49 $999 $249 $1,000 $750 $356
395,000Growth $99 $1,699 $499 $1,800 $1,250 $449
595,000Business $149 $2,499 $999 $2,300 $1,650 $449
1,000,000Scale $250 $2,499 $999 $2,999 $2,000 $449
per 1k at 1M $0.25 $2.50 $1.00 $3.00 $2.00 $0.45
billing Monthly Monthly Monthly One-off packs One-off packs One-off packs
unknowns free Yes Yes Not stated Yes Yes Yes

Competitor prices are published list prices as of [DATE CHECKED]. Subscription providers are shown at the smallest plan covering the volume; pack-based providers at the cheapest combination of published packs. Prices exclude tax and annual discounts.

see plans
help

Email validation questions

Every parameter, verdict and error code is in the Validate Emails docs.

Each verdict costs 1 validation token. unknown results and malformed addresses are free, and no regular token is charged. Validation tokens are a separate balance from your regular and phone tokens; get_billing shows them all.

Up to 1,000 per call. Case and surrounding whitespace are ignored and duplicates are collapsed, so you get one result per unique address.

valid, invalid, catch-all, spamtrap, abuse, do_not_mail and unknown. An abuse verdict carries the sub-status spam_complainer when the address was recently seen complaining about mail.

MoltSets holds no signal for the address: no spam sighting in the last 6 months and no validation in the last 60 days. Unknown results cost nothing.

No. Validation tokens are an add-on to a paid Standard Subscription, from Solo upwards. Upgrade from Free first, then add validation tokens. See pricing.

Email validation is coming soon. The endpoint is documented ahead of launch, and calls to it won’t work until it’s released. You can read the Validate Emails docs now.

MoltSets Console - COMING SOON
SYS: COMING SOON

Send to addresses that check out

Email validation is coming soon. When it launches, add validation tokens to any paid Standard Subscription.

coming soon see pricing