Letterman is a simple Newsletter Component with Subscriber Management and HTML/ Image Embedding capabilities. Good for providing a simple Newsletter Feature on your site, without multiple Lists. YaNC Subscribers can be imported (XML/CSV).

JoomlaForge

Features:

* newsletter management with publishing and checkin/checkout (like articles),
* embedding images into the message (can be turned off)
* file attachments for the newsletter
* integration with CB, VirtueMart and mambo-phpShop,
* sending mails step-by-step to prevent timouts
* newsletters with HTML part and Text part,
* subscriber management,
* subscriber import/export (XML and CVS, Import from YaNC & ANJEL possible) ,
* validate subscriber's email address by resolving the hostname and contacting the mail server (can be turned off, not available on Windows systems)
* ...some more