SourceOne and Office 365 Compatibility:

• SourceOne is primarily designed for on-premises email archiving. While it may not be directly integrated with Office 365, you can still use it alongside by archiving on-premises Exchange mailboxes before migrating to Office 365.

SourceOne's Status:

• As of my last knowledge update in January 2022, SourceOne was an existing product, but specifics may have changed. I recommend checking with the latest EMC (Dell EMC) documentation or contacting their support to confirm the current status, as products can undergo updates or changes over time.

Sales/Whitepapers:

• To find sales information or whitepapers comparing SourceOne and Office 365, check the official Dell EMC website or contact their sales representatives. They often provide detailed materials to help users make informed decisions.