Modern webmail client

[Alex]

Hi, we have fedora25 set up with apache and dovecot and have been
using squirrelmail. We're looking to replace squirrelmail with
something more modern and "responsive" on mobile.

Before I start installing and testing roundcube, rainloop, and the
others, I thought I would ask this list if they have a preference for
users on mobile?

I've searched for an updated review of all the main players these
days, but the most recent appears to be from 2015.

Thanks,
Alex