CliMail   
http://software.blizzard-media.com

CliMail is a set of command line utilities designed to send and receive email. CliSendmail sends email to recipients via the SMTP and SMTPS protocols. CliGetmail receives mail from either POP3, POP3S, IMAP or IMAPS mailboxes. CliMail works best in a scripting environment and has the following features. CliSendmail - send email from the command line, specify CC recipients, specify BCC recipients, send attachments, set delivery notification email address, send email through a firewall (set firewall host, user name, password and type), send HTML formatted messages, set importance level, add your own RFC 822 compliant headers, send mail through servers that require a login, send mail through servers that require CRAM-MD5 authentication mechanism, specify alternate port for an SMTP server, set the priority of an email message, set the reply to address, set the email address to send the read receipt to, send email through SMTPS servers. CliGetmail - check email from the command line, check email through a firewall (set firewall host, user name, password and type), check both POP3 and IMAP accounts, send plain text message, reply to a message, list all messages in a specified mailbox, display messages, delete a message, specify alternate mail server port, check email on POP3S or IMAPS servers.

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.

AutoMail   
http://www.alchemy-lab.com

This powerful command-line email client is designed to automate scheduled file sending in your company. With the built-in ZIP archiver, encryption support and log file support it will process all your daily email jobs.

DetachPipe   
http://www.datamystic.com

* Upload large attachments to simplify sharing and get around sender's and recipients' attachment size limitations * Delete unwanted attachments - via the Recycle Bin so they can be recovered if necessary * Save attachments - using a filename mask to control where attachments are saved * Reduce Outlook's PST file size, improving speed and reliability and simplifying backups * Access attachments blocked by Outlook (.exe, .chm, and more) * Detach attachments, leaving a clickable hyperlink in place * Retain the attachment icon on emails for sorting and display purposes * Re-attach attachments when the email is forwarded, and manually * Detect duplicate attachments to save space * Compress attachments to save space * Set detached attachments to Read-Only to prevent accidental deletion * Automatically handle incoming attachments (detach, delete) * Automatically handle outgoing attachments (detach, delete) Also includes a FREE 10MB email attachment account at http://www.DetachPipe.com Need to send sensitive attachments? Want to know if they were ever read? DetachPipe™ makes it easy to send private files like white papers, proposals and résumés, and to track how many times they were read, if ever, and even see if they were deleted before being read. Just like email, attachments are NEVER public - they are ONLY accessible to the sender and recipients. Just like email, recipients can forward attachments, unless you check the Your Eyes Only™ option, which prevents forwarding. This is ideal for sensitive business documents, and even for developers to send software patches to customers. What's more, you can email large files without worrying about the recipient's account quota and emails bouncing back, or the technical hassle of copying files to an insecure public site.