Yes, both Paubox Encrypted Email and Dropvault offer a Free Trial.
Paubox Encrypted Email is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Dropvault is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Paubox Encrypted Email Starts at $10/User/Month whereas for Dropvault Starts at $15/User/Month.
Some top alternatives to Paubox Encrypted Email includes ZixEncrypt, Virtru, Proofpoint Email Encryption, SendSafely, SenditCertified, NeoCertified, Sfax, WestFax, Encrypted Work and Medsender.
Some top alternatives to Dropvault includes Tresorit, SmartVault, MyDocsOnline, Output Messenger, Crypho, Dialog, Confide, Microsoft Kaizala and Sealit.