NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Data Ladder - Data Ladder is a data quality software helping business users get the most out of their data through data matching, profiling, deduplication
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
Email Verifier - Email verifier app lets you verify email.
DeBounce - Email Validation, Email Checker, Data Enrichment and Appending Tool. Using DeBounce remove invalid, disposable, spam-trap, syntax and deactivated emails.
RingLead - RingLead offers a complete end-to-end suite of products to clean, protect, and enhance company and contact information.