mailboxlayer vs Qualifier.ai
A factual comparison of features, pricing, and capabilities.
mailboxlayer
mailboxlayer is an email verification API (an apilayer product) with syntax and typo checks, real-time SMTP and MX-record verification, catch-all detection, free and disposable provider databases and a quality score. Plans are monthly API request allowances.
Qualifier.ai
Automated outbound sales platform built around an AI assistant called Qai that finds prospects, verifies contacts and runs multi-channel sequences combining email, phone and LinkedIn steps. Replies are detected and categorized automatically, and prospect data and verification are included rather than metered.
Pricing comparison.
Monthly rates shown. Annual billing may offer discounts. Visit official sites for current pricing.
Feature comparison.
| Feature | mailboxlayer | Qualifier.ai |
|---|---|---|
| Syntax and typo check | ||
| Free and disposable provider databases | ||
| Real-time SMTP verification | ||
| MX-records check | ||
| Catch-all detection | ||
| Quality score | ||
| Bulk endpoint | ||
| 256-bit HTTPS encryption | ||
| Qai, your AI sales assistant | ||
| Multi-channel sequences | ||
| Email verification and deduplication | ||
| Deliverability protection with smart pacing | ||
| Smart follow-ups that stop on reply | ||
| Reply detection and categorization | ||
| All inbox and CRM integrations | ||
| GDPR compliant, data stored in the EU |
Native integrations.
mailboxlayer
Qualifier.ai
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Information gathered from official sources and may change. Pricing and features last verified 9/4/2026. Please visit the official websites for the most current information.