There are too many variants, all only vaguely compatible.
The iOS integration requires enrolling one’s phone in the email provider’s MDM, at least to some extent. This is nice if you’re an admin, but it’s not so nice if you’re a user who uses (in accordance with company policy!) a personal device.
The integration with Mail.app is abysmal. It makes my memories of Eudora seem happy.
Signing in is a real PITA.
The spam classifier is comically poor. I’m honestly surprised that (hundreds of) millions of dollars aren’t lost every year when a (paying, enterprise) customer emails someone at a different business (from the native app!), they reply with an utterly non-spammy reply, and the reply is classified as spam. Seriously, the open source spam classifiers from the early 2000s understand threading — how can Microsoft fail to classify individual replies as not-spam? Google is far better. Fastmail is far better. Everything is far better.
I will give MS some credit: the iOS Outlook app is actually pretty nice.
There are too many variants, all only vaguely compatible.
The iOS integration requires enrolling one’s phone in the email provider’s MDM, at least to some extent. This is nice if you’re an admin, but it’s not so nice if you’re a user who uses (in accordance with company policy!) a personal device.
The integration with Mail.app is abysmal. It makes my memories of Eudora seem happy.
Signing in is a real PITA.
The spam classifier is comically poor. I’m honestly surprised that (hundreds of) millions of dollars aren’t lost every year when a (paying, enterprise) customer emails someone at a different business (from the native app!), they reply with an utterly non-spammy reply, and the reply is classified as spam. Seriously, the open source spam classifiers from the early 2000s understand threading — how can Microsoft fail to classify individual replies as not-spam? Google is far better. Fastmail is far better. Everything is far better.
I will give MS some credit: the iOS Outlook app is actually pretty nice.