Thanks for the replies

I have actually tried all of the email clients mentioned above. All of them fall down in some way or another.

This has been discussed many times in the past, but i haven't found a suitable solution.

I am looking (again) for a single email client that will replace outlook (not finding one is the main reason that I am still stuck on a MS platform after many years).

The problem is that a solution must be comprehensive. It must include the ability to connect to exchange server (in my case office 365) and thus the sharing of mails, contacts, calendars, notes etc.

[It seems as though this is the missing component of open/libre office]

Thanks for any suggestions