Azure Archive Storage - Low cost, secure cloud storage for rarely accessed data.
Cryoserver - Cryoserver is an all-in-one email archiving solution that empowers you to preserve your email in a tamper-evident archive, making you transform your data into a useful archive for everyday use.
Amazon Glacier - Amazon Glacier is a secure, durable, and extremely low-cost storage service for data archiving and long-term backup.
ZixArchive - ZixArchive is a cloud-based solution to collect, store and search archived emails.
Barracuda Email Protection - Barracuda Essentials offers advanced Office 365 security features including email scanning, archiving, backup & recovery, and real-time phishing defense.
Athena Archiver - Athena Archiver Email Archiving Solutions provide enhanced disaster recovery options by enabling automatic off-site email storage and data replication to a mirror site.