Abstract Email Validation API
6.6#8 in email verification apisFrom $17 a monthFree planWebAPI
VisitAbstract Email Validation API vs MailboxValidator
MailboxValidator
6.9#2 in email verification apisFree planFree planWebAPI
VisitWhat both publish
| Fact | Abstract Email Validation API | MailboxValidator |
|---|---|---|
| Bulk validation | The API supports bulk email validation and CSV upload is included on paid plans listed on the page. | Users can upload an email list in text or CSV format for bulk validation. |
| Integrations | The maker lists integrations including HubSpot, AWS, Salesforce, Zapier, Snowflake, Shopify, Make, Mailchimp, and Azure. | Listed integrations include Zapier, Make, MailChimp, AWeber, Mailgun, SendGrid, Campaign Monitor, SparkPost, HubSpot, MailerLite, Constant Contact, VerticalResponse, MooSend, Mailjet, iContact, ActiveCampaign, Intercom, Autopilot, ChatGPT, and MCP. |
| Purpose | The API checks whether an email address is real and can receive mail when a user submits it. | MailboxValidator checks email addresses and mailboxes to identify invalid addresses and help reduce email bounces. |
| Support | The product page says questions are usually answered by a real person within a few hours via email or [email protected]. | The privacy policy lists [email protected] and says to allow up to four weeks for a reply to privacy inquiries. |
| Validation checks | One call checks address format, domain MX records, live SMTP without sending a message, and disposable or catch-all addresses. | Checks include syntax, MX records, SMTP response, greylisting, disposable addresses, free providers, role addresses, suppression, DMARC, strict SPF, and website reachability. |
Abstract Email Validation API plans
- Starter$17 a month
- Standard$37 a month
- Professional$39 a month
- EnterprisePriced on request
- Free—
MailboxValidator plans
- API-FREEFree
- API-FREE+Free
- BULK-TRIALFree
- BULK-1$19.95, paid once
- BULK-5$39.95, paid once
- BULK-10$59.95, paid once
Pick Abstract Email Validation API if…
It suits developers and teams checking addresses during signups, cleaning contact lists, or verifying B2B leads. Bulk validation and integrations may also suit organizations managing email data across multiple tools.
Pick MailboxValidator if…
It suits teams that need to check individual email addresses or validate uploaded lists. Developers can also use its API and linked language libraries.