Datacircle

MailSlurp pricing: phone validation API

MailSlurp's siteThis page as plain textPhone validation API: the best of 40+ providers comparedMailSlurp: phone validation API alternatives

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33% complete: 3 of the 9 key fields we checkSee the 9 fields
$0.00per 1,000 phonesWe haven't run MailSlurp through our phone validation API benchmark yet.This plan is free. We rank 1,097 plans for phone validation APIs by price. Half the plans cost $2.998 per 1,000 phones or less.GuGuData's CNY 124 monthly plan is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows.Data247, Abstract API and Foxentry are the best phone validation API providers in the Datacircle benchmark.
Type a number to see the cheapest MailSlurp plan for that many phones. The table below then sorts the other plans by what each costs.
Plan: Free one of MailSlurp's 5 plans
Call: POST /phone/validate MailSlurp's only call for this API
API: Phone validation API one of MailSlurp's 2 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 9 key fields we check. Number, Validity, Place.
  • Nothing to pay.
  • One call. You send phoneNumber to POST /phone/validate. The call returns whether the number is valid.
  • Who can get it: anyone, 1 user, no card needed. Keep data: no limit. Use data: with conditions.

MailSlurp: phone validation API alternatives

MailSlurp alternatives: other phone validation API providers by price

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

This planMailSlurp, freeAbstract API, freeFoxentry, free trial, POST /phone/validate, Validate phone number (basic)HLR Lookups, free, 100 free lookups, POST /nt-lookupsseven.io, free test credit, GET /api/lookup/hlrIdeal Postcodes, free
$ per 1,000 phones$0.00$0.00$0.00$0.00$0.00$0.00
Completeness33%89%56%67%78%44%
Billingfreefreefreefreefreefree
Pay$0$0$0$0$0£0
Enough fornot published100 calls a monthnot published100 results, oncenot published50 calls, once
Freshnessunknown1 daystoredstoredliveunknown
Who can get itanyone, 1 user, no card neededanyone 18 or olderanyone who signs up and creates an API projectnew accountsnew accounts of traders: the customer assures that he is a trader and that the short messages are sent as part of his businessorganisations only: the terms' Client "means the organisation named as the 'Client' or 'Business' or 'Company' in the registration form [...]"

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

  1. api.mailslurp.com/v2/api-docs/
  2. app.mailslurp.com/pricing
  3. docs.mailslurp.com/api/
  4. mailslurp.com/guides/avoiding-api-rate-limits
  5. mailslurp.com/terms-and-conditions/

Product details

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

  • Number
  • Formats, not in the answer
  • Validity
  • Type, not in the answer
  • Carrier, not in the answer
  • Porting and roaming, not in the answer
  • Place
  • Risk, not in the answer
  • Owner, not in the answer
Price
$ per 1,000 phones$0.00
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays forCreate an inbox email address: 100 inboxes a month
Not found
$ per 1,000$0.00
In their words
Their pitchVerify validity of a phone number
Data
Keep datano limit
Use dataYou must not, directly or indirectly: use the Services for unsolicited communications, spam, or mass messaging in violation of applicable law [...] resell, sublicense, or make the Services available to third parties except as expressly permitted [...] use the Services or any data obtained from the Services to train, retrain, or improve any machine learning models or artificial intelligence systems (including large language models) without MailSlurp's express prior written consent.
Plan
Pay$0
Rate limit
Per second150
Batch1
Speed
Answerin the call
The call
You sendphoneNumber
MethodPOST
Path/phone/validate
About the plan
PlanFree
Who can get itanyone, 1 user, no card needed
The 5 fields the plan's answer can hold

country code, country prefix, phone number, valid, validation errors

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