Although I think that I’ve researched a lot, something might missed my research. So I would like the below:

1. Be able to provide and admin various domains for email services.
2. Each domain will have each own users and be independent and each user should have their own mailbox. Don’t want 1 user with different email addresses.
3. Modern UI. So I guess no Migadu.
4. Apps for iOS and Android or be able to use Foss apps like K9.
5. Provide white label option for each domain to have their own logos etc.

As far as I looked, Zoho is close to what I’m looking for but now sure. Also looked infomaniak which might offer those too.

So, please provide your feedback 😀

Edit: Don’t want Google and I’m talking about a paid plan. I’m aware that what I ask cannot be provided for free.