POP3 C#研究
新的POP3，IMAP协议：http://mailsystem.codeplex.com/
参考资料:
http://hpop.sourceforge.net/
http://mailsystem.codeplex.com/downloads/get/96988
Project Description
MailSystem is a suite of .NET components that provide users with an extensive set of email tools. MailSystem provides full support for SMTP, POP3, IMAP4, NNTP, MIME, S/MIME, OpenPGP, DNS, vCard, vCalendar, Anti-Spam (Bayesian , RBL, DomainKeys), Queueing, Mail Merge and WhoIs
Common features:
- Compact Framework Support
- Asynchronous operations
- Secure connections using SSL
- Mail signing & encryption/decryption using S/MIME & OpenPGP
- Separate object for the Message and the clients
- Fully Accessible Headers
- Mail encoding customization for globalization
- Determine if it is a mail server bounce + e-mail address parsing
- Send from / receive Message object to file and streams
SMTP - Simple Mail Transfer Protocol
- Direct sending of e-mail without an SMTP server
- MX server caching (increase by 6 the performance of direct send)
- Mail queueing systems support
- Multiple bodies (both HTML and Text)
- Embedded Objects such as Image, Sound and Video
- Redundant SMTP Server List (fail over)
- Secure Authentication
POP3 - Post Office Protocol 3
- View Mailbox Size and Message Count
- Download Full Message or Header Only
- Secure Authentication
IMAP4 - Internet Message Access Protocol 4
- Manage Mailboxes (list, create, rename, delete, move, empty, etc.)
- Manage Messages (retrieve, copy, delete, append, etc.)
- Download Full Message or Header Only
- Manage flags
- Extended search features
- Secure Authentication
- New message arrival notification support (IDLE command)
NNTP - Network News Transfer Protocol
- List News groups and Articles Easily
- Download Full Articles or only Headers
- Secure Authentication
- Mail merging and template
- Load Configuration from XML or Text File
- Field formatting
- Bind Bodies with Data Sources (DataTable, ArrayList, Custom collections, ...)
- Bulk Mailing from a Data Source (in addition to the multiple data bound bodies)
vCard & vCalendar
- Contact file reading and writing
- Calendar event reading and writing
- Sending and receiving a meeting request
Anti-Spam
- Block list servers support (RBL)
- Full DomainKeys implementation
- Learning Bayesian filter
- Email Addresses Validation Using MX Record Caching
- Commtouch® anti-spam technology support
DNS
- Support for individual queries of all types
- Get mail exchange (MX) records of a DNS server
- Get all records from a DNS server
WhoIs
- WhoIs server querying
- Asynchronous mode
- Domain name availability check
- Custom WhoIs server list resource file support
Mail queueing application
In addition to the library, the suite provides the developer with a full featured mail queueing system called ActiveUp.Q that is completed integrated with the solution. This advanced queueing solution includes but is not limited to:
- Standard or scheduled queueing of complex e-mails
- Multiple pickup directory support (ideal for ISP's)
- Automatic Thread load-balancing
- Powerful service managing to monitor the running and scheduled tasks
- Fault-tolerant and auto-recovery
- Execute a GET or POST query on any HTTP web site or intranet
- Triggers include Daily, Weekly, Monthly or a specific day, week and month of year
- Multiple XML task list configuration file support
