[vel0city]

Several months ago I moved my family's email hosting to Zoho. Its been pretty solid. The web client is really nice, its got pretty good mobile apps, it provides IMAP/Exchange Sync on their cheapest paid tier so you don't need their apps. Zoho has a 5 user free tier of just email, but you're then limited to their apps. I'm using the Mail Lite tier with the larger 10GB storage which is $1.25/mo/user billed annually.

They have some tools to migrate email. I was migrating from an IMAP source, the migration was pretty quick and painless.