From Hiroyuki Yamamoto
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client.
Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users.
Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems.
Sylpheed uses GTK+ GUI toolkit. The newest version of Sylpheed works with GTK+ 2.4 or later (2.6 or later is recommended).
Sylpheed is a free software distributed under the GNU GPL (the library part is GNU LGPL). You can freely use, modify and redistribute it under the license.
# Simple, beautiful, and well-polished user interface
Sylpheed adopts 3-paned display similar to the popular e-mail clients for Windows such as Outlook Express and Becky. So it is easier to use it on the first time.
# Comfortable operationality
The user-interface is constantly improved, and Sylpheed achieves attentive, comfortable operationality.
Especially the operationality of keyboard is taken count of, so you can sequentially read mails efficiently. Of course, you can use easy mouse-only operation.
You can also customize the behavior of mail display in detail.
# Well-organized, easy-to-understand configuration
Each configuration item is well-organized, so you can easily configure Sylpheed when you start using it.
The default settings are also cared for, so you only have to configure required e-mail account settings to use it immediately (other settings can be kept as default).
# Lightweight operation
The performance is always cared when implementing Sylpheed because it exerts a strong influence on the usability. For example, you can read messages in a folder which has 20-30 thousands without stress.
The every portion of Sylpheed is implemented by C language (no interpreter or virtual machine), so there is no sluggishness.
# High reliability
The stability and the protection of data is taken into account to the fullest extent because they are the most important factors for e-mail clients. Storing several ten thousands of messages doesn't affect the stability. Even if the application is forcibly terminated, there is almost no possibility of the lost of mail, or inconsistent state of mailboxes.
Messages are managed with MH format on which a file corresponds to a message, so you can easily backup, migrate, and process them with other applications. There is also less risk of mail loss when a system failure occurs, compared to formats on which a file corresponds to a folder. Messages are instantly moved or deleted with this format when asked to, so users don't have to perform periodic compaction of mailboxes by hand to prevent the growth of mailboxes.
# Powerful filtering and search
You can perform various processings for sent/received messages by using the powerful filtering feature.
Any headers, message body,
GTK+ 2.4.0 or later (GTK+ 2.6.10 is recommended)
PentiumII 266MHz or higher CPU (PentiumIII 500MHz or higher is recommended)
128MB or higher RAM (256MB or higher is recommended)