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MailerSend pricing and alternatives: email verification API, POST /email-verification/verify-async

MailerSend's sitellms.txtBest email verification API in 2026
33% complete: 2 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 emails
Plan: Free one of MailerSend's 25 plans
Call: POST /email-verification/verify-async one of MailerSend's 3 calls
API: Email verification API MailerSend's only API

About this item

  • Freshness. MailerSend doesn't say how fresh an answer is.
  • 2 of the 6 key fields we check. Address, Deliverability.
  • Nothing to pay. You get 10 credits once, enough for 10 calls.
  • One call. You send email to POST /email-verification/verify-async. The call returns a job. You fetch the answer once the job is done. Or the provider sends the answer to your webhook.
  • Who can get it: with conditions. Keep data: no limit. Use data: with conditions.

MailerSend: email verification API alternatives

We list other providers' plans closest to this plan in price per 1,000 emails.

This planMailerSend, free, Free, POST /email-verification/verify-asyncEnrich.so, free, Free, POST /email-validationGetProspect, free, Free, POST /v2/email-verificationsKaijuVerifier, free, Free, POST /api/v1/jobsNeutrino API, free, Free, GET /email-validate
$ per 1,000$0.00$0.00$0.00$0.00$0.00
Completeness33%50%50%50%50%
Billingfreefreefreefreefree
Pay$0$0$0$0$0
Enough for10 calls, once100 calls, once100 results a month100 results a monthnot published
Freshnessnot publishedlivelivelivenot published
Who can get itanyone using the Services solely for purposes relating to their trade, business, craft, or professionanyone 18 or over, on a new account, for an organization, someone with authority to bind itanyone 16 or overanyoneanyone

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-23.

  1. developers.mailersend.com/api/v1/verification/email
  2. mailersend.com/features/email-address-validation-api
  3. mailersend.com/help/how-to-verify-email-addresses
  4. mailersend.com/help/plan-add-ons
  5. mailersend.com/help/plans-features-and-limits
  6. mailersend.com/help/rate-limits-how-to-reduce-403-422-429-errors
  7. mailersend.com/legal/api-use-policy
  8. mailersend.com/legal/terms-of-use
  9. mailersend.com/pricing
  10. mailersend.com/pricing.md

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Address
  • Deliverability
  • Confidence, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company, not in the answer
Price
$ per 1,000$0.00
Billingfree
Aggregators
Aggregatorsnone
Charges
Percall
Also pays forEmail API (500 emails per month) · from the same budget: Verify an email · Create a list · Verify a list
Not found
$ per 1,000$0.00
In their words
Their pitchKeep your recipient list clean and maintain great deliverability by automatically verifying incoming email addresses with the email address validation API.
Data
Keep datano limit
Use dataa limited, non-exclusive, non-sublicensable, non-transferable, non-assignable license to use the API to develop, test, operate and support your integration, and distribute or allow access to your integration to users of your service. You have no right to distribute or allow access to the API as a stand-alone product. [...] MailerSend does not allow you to use the API for sending spam or taking any other actions that violate our ToU.
Plan
Pay$0
You get10 credits
Enough for10 calls, once
Rate limit
Per day100
Per second1
Batch1
Speed
Answerby polling or webhook
The call
You sendemail
MethodPOST
Path/email-verification/verify-async
About the plan
PlanFree
Who can get itanyone using the Services solely for purposes relating to their trade, business, craft, or profession
The 4 fields the plan's answer can hold

verification ID, email address, job status, result

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