TabMail   
http://dlg.krakow.pl

TabMail for Windows (95/98/Me/NT/2000/XP) is mail user agent (MUA) for sending, receiving and managing your email messages. It's small and fast, conforms Internet Standards and supports Unicode characters. Some other properties: * Automatic attachments compression with zlib library * Warn when open (or save) dangerous attachments * Message filtering (input and output) using regexp TRE library * Spam filtering using SpamBayes message header additions * Simple view of compound messages * Message-thread can span many mailboxes * HTML messages view as plain text (see htmlp for more details). * Easy PGP message encryption/decryption * SMTP and POP3 authentication * Support for SSL/TLS connections * Scanning attachments for viruses * Multi-user and multi-account * Tracing for diagnosing TCP, POP3, SMTP or filter errors

JBMail   
http://www.pc-tools.net

JBMail is a compact and portable secure e-mail client that supports SSL/TLS encrypted POP3 and SMTP. The software has been designed for simplicity, security and on-line mailbox access meaning that mail is manipulated remotely and NOT stored locally. Delete spam or large attachments without having to first download them! This portable software does not require installation, registry keys or even temporary files. JBMail can be run from a CD or floppy disk, yet it has all the essential mail client features including attachment support, advanced junk filtering, address books, and defenses against destructive attachments. It is naturally immune to HTML and scripting attacks. With its secure design, small size, and SSL support this client is ideal for the road warrior or security-conscious remote mail user.

Attachment Analyser   
http://www.MADSolutions.com

Analyse attachments and e-mail in your mailboxes, public folders or personal folder files. This free analyser will provide you with html reports you can use to help identify potential problem areas with respect to attachments within your e-mail system. Feel free to distribute this analyser to friends and colleagues.

Rapid-Emailer   
http://www.absolutefuturity.com

Fast email campaign manager. Anonymous Emailer with a Built-In SMTP Server. Duplicate address removal, send alternative HTML and Text formats, allows attachments and embedded images, allows you to put each user info in each email automatically, command Line support. pure header manipulation, very large email list support, overload protection, creates a failed and successful list. Easy resending of failed emails, free updates. Allows attachments, embedded images, HTML and Text alternative all within the same email.. Command Line support for sending Email Campaigns. Supports Embedded images. Multiple threads, sending up to 200 emails at the same time. Built-in SMTP Server Send personalized emails. Send multiple file attachments in MIME format. Alternative MIME format can send HTML and Text to allow email clients to choose which format. Include each recipients name, email address and number in the order sent into the body or subject of the message. Include random numbers, random letters, Date, Time and Campaign Name into the body or subject of the message. Can do an MX query and send email directly to recipients host. SMTP server support. SMTP Server overload protection. You can set the importance or priority of the emails. Large Email List capability. Very easy Wizard interface. Wildcard support in exclusion lists. You can save as many Email Campaigns as you like. All settings are stored for each campaign. Previous campaign can be recalled very easily. Email Campaigns can easily be backed up. Many types of Email Lists are supported. Send Attachments. You can track emails viewed by using code. You can track links viewed by using code. Creates a Failed recipient list. Creates a Successful recipient list. You can choose how many times to retry a failed send. One button to retry failed recipients. Status for each and every thread. Very fast emailing. Free updates. Easy to use and great looking interface

absoluteTools-Sendmail CMD   
http://www.abspdf.com

absoluteTools-SendMail CMD is a easy to use Windows tool to send email from command line. Send emails to multiple recipients (To, CC, Bcc) in plain text or HTML, adding attachments and inline images. Automatically embeds images, javascript and css from external local files from the HTML. It is perfectly suitable to enable old apps to easily send rich text emails. Full SMTP auth support.