Customers generally ask us for the best WebMail recommendations
Well, the answer is that it depends on the client's needs. These 3 webmails offer basic email features such as: Compose Email, Forwarding, Junk Mail, Address Book, Trash, Folders, Marked as Read/Unread and many more.
SquirrelMail
Squirrel Mail has all the basic functions you need from an email client, calendar, spell check, including MIME support, address books, and folder manipulation. It has a simple view for all your email lists. Recommended for those looking to read and reply to emails.
RoundCube
Roundcube offers a better, user-friendly and more dynamic interface for your email compared to squirellmail. Roundcube offers markings, calendars, folders, address features complete with groups and LDAP connectors, find-as-you-type address book integration and MIME support.
Horde
Horde, is the most feature-packed email compared to the previous two Squirrelmail & Roundcube, Horde has the same functionality as Outlook. Horde webmail comes with features such as task list, notebook, address book, and many more. The e-mail management system and support advanced filters, attachments, spell checking, and good HTML e-mail.
In conclusion, the choice of webmail you will use depends on your convenience, needs and what features or usability you are looking for. If you want something simple, you should choose SquirrelMail. If you are looking for an attractive look coupled with easy-to-use features, you should choose Roundcube. And if you're looking for a more full-featured email, you should choose Horde.