Gaggle's archiving and backup services are compatible with G Suite for Education, Office 365 and other platforms. Save money with a fixed annual fee, tiered pricing and no minimum requirements.
If your server goes down, all of your users can still access their email through a fully-functional, web-based email system via POP3, SMTP and IMAP clients. Any data loss can be pushed back to you while always maintaining message integrity for every user.