: For business email cleaning, services like Hunter.io or ZeroBounce are the industry standards for accuracy and legal compliance.
| Tool | HMC Mail Checker 2.2 | PopTray | ePrompter | |------|----------------------|---------|-----------| | Platform | Windows only | Windows | Windows | | Freeware | Yes | Yes | Freemium | | Max accounts | 5 | Unlimited | 16 | | IMAP support | Partial | Full | Partial | | HTML preview | No | Yes (optional) | Yes | | Resource usage | Very low | Low | Medium | hmc mail checker 2.2