Yes, Abstract Email Validation API has a permanent free tier alongside its paid plans. The free plan includes 100 requests per month included on the free plan and 3 requests per second rate limit on the free plan. FreeTier.co estimates the free tier at about $5.00/mo, and no credit card is required to sign up.
About
Abstract API’s Email Validation and Verification API provides real-time email verification designed to help teams reduce bounce rates, clean signup forms, and improve the quality of inbound leads. It validates email addresses through a single REST API and returns structured JSON responses that support fast, automated decision-making.
The service checks core deliverability signals such as syntax, MX records, SMTP validity, disposable domains, catch-all behavior, and typo detection. It also offers deeper enrichment and risk insights on higher plans, including sender details, domain intelligence, quality scoring, and breach-related signals.
- Real-time email validation via REST API
- Syntax, MX, SMTP, and deliverability checks
- Disposable, free email, role email, and catch-all detection
- Quality scoring and risk signals on advanced plans
- Bulk validation support and integration-friendly workflows
- Compliance-focused infrastructure with SOC 2 and GDPR positioning
Free Tier Value
This free tier includes the core email validation workflow plus a small monthly allowance of 100 requests, while the cheapest paid plan starts at $17/month for 60,000 requests. That makes the free plan roughly 0.17% of the Starter plan’s volume, but it still exposes most of the same practical checks, so it’s worth about $5/month to a buyer comparing options.
What's included in the free tier
Verified
- Email deliverability checks for assessing whether an address can receive mail.
- Email sender details for identifying the person or organization behind an address.
- Email domain details for reviewing domain-related information.
- Email quality scoring for evaluating overall email quality.
- Email risk assessment for spotting risky addresses and domains.
- Email breaches data for checking whether an email appears in breach records.
- 100 requests per month included on the free plan.
- 3 requests per second rate limit on the free plan.
See Abstract Email Validation API pricing for current limits.
Paid plans
Starter
- requests per month
- 60,000
- requests per second
- 3
- Email deliverability
- Email sender
- Email domain
- Email quality
- Email risk
- Email breaches
- Full API response
Standard
- requests per month
- 60,000
- requests per second
- 3
- Email deliverability
- Email sender
- Email domain
- Domain whitelisting
- Bulk CSV upload
- Full API response
Professional
- requests per month
- 60,000
- requests per second
- 3
- Email deliverability
- Email sender
- Email domain
- Email quality
- Email risk
- Email breaches
- Domain whitelisting
- Bulk CSV upload
Enterprise
- requests per month
- Flexible
- requests per second
- Flexible
- Email deliverability
- Email sender
- Email domain
- Email quality
- Email risk
- Email breaches
- Commercial license
- SOC 2 & GDPR
Pricing extracted from Abstract Email Validation API's pricing page. Always verify current pricing before committing.
Common questions
Is Abstract Email Validation API free forever?
Yes. Abstract Email Validation API has a permanent free tier alongside its paid plans, though the allowance typically resets each month.
Does Abstract Email Validation API require a credit card?
No. You can start on Abstract Email Validation API's free tier without entering card details.
What happens when you exceed Abstract Email Validation API's free tier?
You move to a paid plan. Abstract Email Validation API's cheapest paid plan is Starter at $17 / month.
What is Abstract Email Validation API's free tier worth?
Abstract Email Validation API's free tier is worth about $5.00 per month. That maps to an FTV score of 56/100. The FTV score is explained at freetier.co/ftv.
