Yes, both SendSafely and Dropvault offer a Free Trial.
SendSafely is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Dropvault is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SendSafely Starts at $10/Month whereas for Dropvault Starts at $15/User/Month.
Some top alternatives to SendSafely includes Securely Send, ZixEncrypt, Encyro, Proofpoint Email Encryption, SenditCertified, DropSend, DataMotion Secure Email, Encrypted Work, Sealit and SendSecure.io.
Some top alternatives to Dropvault includes Tresorit, SmartVault, MyDocsOnline, Output Messenger, Crypho, Dialog, Confide, Microsoft Kaizala and Sealit.
