We're a 365 shop, and there's only been one customer that we didn't go through with transitioning them completely away from Google Workspace to M365. While I personally think Google Workspace is the right choice for a lot of small business, our partnerships demand we sell them on the Microsoft stack.
Curious about eM client -- I'm going to give it a try and see if it can integrate with 365 as well as you say it does Google, because I personally have my own 365 tenant and hosted email, and if it works out I might well prefer it.
Interesting to note so far that it will still run -- without complaint, even -- on Windows 7, I like trying things on it first to see if they're good interim solutions for people who aren't ready to move on just yet. Also, I like using my Dimension 9200 with the QX6700 for some things still, and it runs Windows 7 primarily. Thunderbird I had to use an old version of (115.x, spring '24, still supported in esr branch right this second afaict) and an exchange online connector plugin to work with. eM Client worked off the bat with it, albeit clunkily -- I couldn't set it up as part of initial client setup, I had to click through and go through the accounts wizard once it was already set up and then it'd let me log in.
Merc, I'm relying on your experience with it -- I know you said you refused to transfer 300GB of PSTs to a customer's copy of it, but is that because of the volume or because there's no good way to use PST/OSTs with it? I'm trying to gauge it as something to potentially recommend to friends and family. Especially if they can remain within the bounds of its free license -- I'm a little intimidated by the $149.99 price tag of the personal edition with lifetime upgrades, myself, but I know for a fact I don't want to pay a subscription for it.