Rainmail Email Server not only supports POP/IMAP access to emails but also includes a built-in web mail client known as Rainmail Email. Users can send and receive emails using only an Internet browser. The features available on Rainmail Email are:

1. Compose and send emails
2. Create folders and organize incoming emails into folders
3. Set and use email filters
4. Set up and grant permissions to other users
5. Create, organize and use Address books and
6. Perform advanced search over emails