System.Net.Mail vs Mail.dll

In this article we’ll try to describe advantages of Mail.dll over standard .NET System.Net.Mail namespace.

The fundamental difference is that with System.Net.Mail you can’t receive emails. System.Net.Mail does not have support for POP3 and IMAP protocols – two fundamental protocols for email retrieval, also .NET does not have any classes that would parse received email.

System.Net.Mail is great for sending simple emails, but Mail.dll gives you much more, even in terms of sending. You get appointments (iCal) and vCard support, you can send S/MIME signed and encrypted emails (if you plan to use EDI). It gives you easy to use template engine and VERP support out-of-the-box.

Here’s the comparison chart:

System.Net.Mail Mail.dll component
Send emails yes yes
SMTP protocol support (over SSL/TLS) yes yes
Send emails using VERP no yes
Send S/MIME encrypted emails no yes
Send S/MIME signed emails no yes
Send S/MIME signed emails (detached) no yes
Send DKIM (Domain Key Identified Mail) no yes
Templates support no yes
Receive emails no yes
IMAP protocol support (over SSL/TLS) no yes
POP3 protocol support (over SSL/TLS) no yes
Retrieve and parse emails no yes
Extract HTML, plain text, images no yes
Attachment retrieval no yes
Send and retrieve iCalendar appointments no yes
Send and retrieve vCards no yes
OAuth 1.1a/2.0 support no yes
Spam filter no yes
Bounce handling no yes
Convert HTML only emails to plain text no yes

If you need help or more information about any of these features visit Mail.dll samples.

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