NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Salesflare - Simply powerful CRM. Automates your data to build better relationships and make more sales.
Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI
17hats - The all-in-one business system for entrepreneurs.
DeBounce - Email Validation, Email Checker, Data Enrichment and Appending Tool. Using DeBounce remove invalid, disposable, spam-trap, syntax and deactivated emails.
LinkPoint Connect - LinkPoint Connect: Desktop Edition for Salesforce links the work you do in your email to the records you need to update in the CRM.