Create and send e-mails with MailBee.NET SMTP component

Here you can find the detailed developer guides on how to create and send e-mail messages with SMTP component of MailBee.NET family.

This section also describes the related tasks like how to verify an e-mail address, make DNS queries, send custom SMTP commands, along with general features like logging, async programming, using in a web application, troubleshooting, and so on.

Getting started guide is a quick tour of the features and usage samples. In particular, its Feature map topic allows you to quickly find the feature you're looking for.

Other guides provide more detailed and comprehensive information and code samples on the particular features.

• Getting started with SMTP component
  • Introduction
  • Feature map as compared with System.Net.Mail.SmtpClient
  • Import namespaces and set license key
  • Send e-mail in a single line of code
  • Send e-mail to SMTP relay server
  • Send HTML e-mail with attachment
  • Send e-mail with Reply-To and multiple To, CC and BCC recipients
  • Send if server requires SMTP authentication
  • Send if server requires SSL (like Gmail)
  • Send e-mail directly without SMTP relay server
  • Verify e-mail address without sending actual e-mail
  • Exceptions and errors
  • MS Exchange SMTP issues
  • Log file of SMTP conversation
  • Troubleshoot common sending errors and non-delivery
• Send from ASP.NET web application
  • Requirements and limitations
  • Send simple e-mail in ASP.NET
  • Send e-mail with attachment uploaded from client
• Compose complex e-mail with multiple parts and attachments
  • Send e-mail with separate HTML and plain-text parts
  • Send e-mail with HTML part and auto-generated plain-text part
  • Send e-mail with attachments from file, stream, memory, another message
  • Send HTML e-mail with embedded pictures
  • Send e-mail created from web page content
  • Create HTML in memory and automatically embed linked resources
  • Create HTML in memory and manually embed linked resources
• Compose e-mail created from another object or file
  • Send e-mail created from System.Net.Mail.MailMessage
  • Send e-mail created from memory
  • Send e-mail created from file
  • Send e-mail created from serialized XML
  • Send e-mail created from Outlook .MSG message
• Compose international e-mail
  • Charsets, code pages, encodings, and UTF-8
  • Content-transfer encodings
  • UTF-8 or local language-specific charset?
  • HTML META tag with charset declaration
  • HTML-encoded international characters ("&#xxxx;" sequences)
  • Send plain-text e-mail with Chinese content and "utf-8" or "gb2312" charset
  • Send plain-text e-mail with Windows-1252 headers (German characters in From, Subject, To)
  • Send HTML e-mail with international characters
  • Compose e-mail in right-to-left language like Hebrew
  • Send e-mail with international characters in headers, body, attachment filenames
• Set From, Reply-To, Return-Path, To, CC, BCC, Priority and other headers in e-mail
  • Introduction
  • Set different From and Return-Path (use "real" sender address different from "From" address)
  • Send to undisclosed recipients (use "real" recipient addresses different from "To", "CC", "BCC" addresses)
  • Set "Request delivery confirmation" and "Request read confirmation" flags
  • Set Reply-To
  • Reply to message and set In-Reply-To and References headers
  • Set Importance, Priority, Sensitivity flags
  • Set custom Date and Message-ID values
  • Add custom headers
• Mail merge and bulk mail
  • Mail merge in MailBee.NET
  • Bulk mail, explained
  • Error processing in bulk mail operations
  • Send series of e-mails based on template and database
  • Mail merge with post processing
  • Monitor mail merge progress and track successful and failed sendings
  • Submit e-mails generated with mail merge to MailBee.NET Queue
• Request delivery and reading confirmation
  • Comparison of various methods of requesting delivery and reading confirmations
  • Request delivery and reading confirmation via message headers
  • Request delivery status notification with ESMTP DSN
  • Use ESMTP DSN and message headers together
  • ESMTP DSN in detail
  • Fine-tune ESMTP DSN and assign Tracking ID to e-mail
• Adjust e-mail to let it pass through spam filters
  • Sign e-mail with DomainKeys and DKIM
  • General suggestions
• Sign and encrypt e-mail with S/MIME
  • Introduction
  • Sign e-mail with S/MIME to prove authenticity of sender
  • Sign and encrypt e-mail with S/MIME to ensure privacy and security
• Accepted and refused recipients
  • Introduction
  • Allow or disallow refused (failed) recipients
  • Get successful and failed recipients after sending e-mail
  • Use events to track successful and failed recipients during sending e-mail
• Direct send without SMTP relay server
  • Send with SMTP relay server, explained
  • Direct send via DNS MX lookup, explained
  • Set DNS servers in code, via auto-detection, or in config file
  • Direct send example
  • Set appropriate Hello message to pass reverse DNS check
  • Direct send vs normal send
  • Validate e-mail address via syntax check and DNS MX lookup
• Filter spam with DNS queries (MX, SPF, DKIM, reverse DNS)
  • Introduction
  • Get DNS MX records
  • Get SPF or DKIM ADSP records with DNS TXT query
  • Get reverse DNS records with DNS PTR query
  • Use rDNS to check if sender's IP address matches HELO domain
  • Use rDNS query to find out if sender is home computer or Internet server
• Send multiple individual e-mails or send through multiple servers
  • Introduction
  • Send two e-mails in single session
  • Send two e-mails in single session via SSL or STARTTLS
  • Send bulk e-mail through two SMTP relay servers for increased throughput
  • Send through main SMTP relay server or through fail-over SMTP relay server if main server is down
  • Send through SMTP relay server or use direct send if SMTP relay server is down
  • Submit to MailBee.NET Queue for increased or limited throughput
  • Throttle throughput (limit sending rate)
  • Performance optimization
• SMTP over SSL (Gmail.com, Live.com, certificates)
  • Features supported
  • Auto-detect SSL settings based on the port and host
  • Connect to dedicated SSL port
  • Connect to regular port and use STARTTLS to activate SSL
  • Advanced STARTTLS
  • Configure SSL protocol (Auto, SSL, TLS)
  • Supply client certificate and check server certificate
  • Validate server certificate selectively
  • Validate server certificate without throwing exception
• SMTP authentication in detail
  • SMTP authentication explained
  • POP-before-SMTP or ESMTP?
  • Authenticate with POP-before-SMTP
  • ESMTP authentication in more detail
  • Secure authentication
  • Use Integrated Windows Authentication (no username and password required)
  • Use OAuth 2.0 with Gmail, Outlook.com, Live.com or Hotmail.com
  • Fine-tune SMTP authentication process
  • Create your own authentication method
• Advanced SMTP connections (proxy, extensions, custom hello, commands and ports)
  • Connect via proxy server (SOCKS4, SOCKS5, HTTP)
  • Connect to non-standard SMTP port
  • Set local end point in case of multiple network adapters or firewall
  • Send custom Hello message to server
  • Examine supported ESMTP extensions
  • Disable conflicting ESMTP extensions
  • Send custom command to server
• SMTP with filesystem, POP3, IMAP (forward from POP3, send to SMTP and IMAP)
  • Introduction
  • Load e-mail from file and send it
  • Send e-mail and save it to Sent Items on IMAP server
  • Send e-mail and save it to file stream
  • Receive e-mail with POP3, forward it as attachment of another e-mail and send with SMTP
  • Receive e-mail with IMAP, reply to it and send via SMTP
• Use events to control MailBee.NET execution and monitor SMTP activities
  • Introduction
  • Monitor progress of SMTP session with events
  • Change e-mail message during sending
  • Cancel sending process
• Handle exceptions and errors
  • Introduction
  • Error codes and localization of error messages
  • Connection-level and protocol-level exceptions
  • Final errors, warnings, and ErrorOccurred event
  • Exceptions and async methods
  • TestSend example
• Asynchronous methods of Smtp class
  • Introduction
  • Send single e-mail asynchronously
  • Send multiple e-mails asynchronously
• Log files and memory logs in detail
  • Logger settings and options
  • Synchronize access to log file of multiple instances of Smtp class
  • LogNewEntry event

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