IlohaMail

IlohaMail is a light-weight yet full featured multilingual PHP-based webmail program with IMAP/POP3 support. IlohaMail is easy to install and use, and runs on a default build of PHP and does not require databases (although database support is available) or the c-client IMAP library (a custom pure-PHP library is used). Features include: POP3/IMAP support, full contacts manager, calendar, bookmarks manager, multiple sender identities, Aspell-based spell checker, and experimental GPG support.