1)   OstroSoft SMTP Component 7.0.3
.NET assembly for sending emails programmatically using .NET or COM-compliant programming and scripting languages. Supports multiple recipients, email (MIME) attachments, AUTH and POP3 authentication, HTML email, custom headers, embedded objects, TLS
smtp, email, attachment, MIME, authentication, TLS, SSL, embedded image, HTML email, .NET,