Feature Comparison Chart for POP Version, IMAP Version
Legend 
: Supported - :N/A X: Not Supported
| POP Version | IMAP Version | |
| Protocol Supported | ||
| SMTP | ○ | ○ |
| SMTP-AUTH | ○ | ○ |
| SMTP over SSL *New | ○ V3.3 or higher | ○ V3.3 or higher |
| POP3 | ○ | |
| POP before SMTP | ○ | |
| POP over SSL *New | ○ V3.3 or higher | |
| IMAP4 | ○ | |
| IMAP over SSL *New | ○ V3.3 or higher | |
| User Interface | ||
| HTML5 (on PC Browser) | ○ V3.0 or higher | ○ V3.0 or higher |
| HTML5（on Tablet Browser） *New | ○ V3.3 or higher | ○ V3.3 or higher |
| HTML5 (in Smartphone Browser) | ○ V3.1 or higher (Only Available in Japanese) |
○ V3.1 or higher (Only Available in Japanese) |
| CHTML (on Mobile Phone Browser) | ○ (Only Available in Japanese) |
○ (Only Available in Japanese) |
| Denbun Gadget (desknet's Portal Gadget) | ○ | × |
| Tools | ||
| Composing Message | ○ | ○ |
| Receiving Message | ○ | ○ |
| Sending Message | ○ | ○ |
| Find Messages | ○ | ○ |
| Hierarchical Folder Management | ○ | ○ |
| Folder Management Account by Account | ○ | |
| Signature | ○ | ○ |
| Preventing Junk E-mail | ○ | ○ |
| Filtering | ○ | ○ |
| Preventing Executing Scripts Embedded in HTML Messages | ○ | ○ |
| Support Many Character Encodings (Receiving/Sending) | ○ | ○ |
| Connection Pooling | ○ | |
| Address Book | Public/Private | Private |
| Address Book (Import/Export) | ○ | ○ |
| Sending Message to Group | ○ | ○ |
| Search in Contacts in LDAP Server | × | ○ |
| User List | ○ | × |
| Showing Disk Usage | ○ | ○ |
| Drag & Drop Support When Selecting Attachment Files (uses ActiveX control) | ○ | ○ |
| Single Sign-on from desknet's Standard Version | ○ | ○ |
| Shared Link | ○ | ○ |
| Downloading Messages Feature | ○ | ○ |
| Japanese/English/Chinese User Interface *New | ○ V3.3 or higher | ○ V3.3 or higher |
| Japanese/English Translation *Notice of the Japanese English translation feature of Denbun offer ends |
○ V3.0 or higher | ○ V3.0 or higher |
| Undo Send (Cancel after Sending) | ○ V3.0 or higher | ○ V3.0 or higher |
| Display Number of Unread Messages in Sub-folder | ○ V3.0 or higher | ○ V3.0 or higher |
| Administration Features | ||
| User Import | ○ | ○ |
| Group Import | ○ | |
| Account Import | ○ | |
| Individual Disk Space Limitation | ○ | |
| Keeping Messages | ○ | ○ |
| Deleting Old Expired Message in Trash | ○ | ○ |
| Access Restriction by Mobile ID authentication | ○ | ○ |
System Configuration
POP Version: When "Denbun Server" gets a request from user's browser, it receives messages from the mail server by using POP3 protocol.This enables users to create more than one account and limit the disk space usage.
All you need is Denbun.It's suitable as your first WebMail system.
IMAP Version: When "Denbun Server" gets a request from user's browser, it sends IMAP protocol commands to the mail server in order to get information for appropriate mail box. Then, web contents is generated from the information received, and displayed on user's browser. Basically mail data is stored in mail server only.
Stability operation with our original connection pooling. We recommend it for large scale implementations.
