[nickfromseattle]

I use O365 for email, and have Gsuite for Google Docs / Sheets / etc.

Here's why we use O365 for email:

1. Gmail tabs get lost in your sea of tabs, while Outlook being a desktop app means it's easy to alt / tab over at any time.

2. It's really easy to manage multiple mailboxes with O365 (via Outlook), while Google doesn't work super well for multiple profiles.

3. O365 has better support through their reseller partners (we use AppRiver) while dealing with things we don't know a lot about (SPF / DKIM / distribution lists / shared mailboxes / etc).

4. (I believe) O365 is much less likely to shutdown our account for unknown reasons than Google.

5. Lastly, I was exposed to O365 while working at a SaaS in the Microsoft ecosystem. For the first few weeks I hated it, and missed Gsuite, but overtime I came to love O365 and hate Gmail.