Paubox Encrypted Email offers Free Trial, but Appriver does not.
Appriver is designed for Large Enterprises and Medium Business.
Paubox Encrypted Email is designed for Individuals, Large Enterprises, Medium Business and Small Business.
The starting price of Paubox Encrypted Email begins at $10/User/Month, while pricing details for Appriver are unavailable.
Some top alternatives to Appriver includes ZixEncrypt, Paubox Encrypted Email, Proofpoint Email Encryption, Echoworx, Zimbra Cloud, Censornet Email, Sealit, Proofpoint Digital Compliance, Trellix Email Security and MimeCast Email Security.
Some top alternatives to Paubox Encrypted Email includes ZixEncrypt, Virtru, Proofpoint Email Encryption, SendSafely, SenditCertified, NeoCertified, Sfax, WestFax, Encrypted Work and Medsender.