yahoo email

Advanced Mac Mailer for Leopard - send out personalized bulk email messages.

SMTPClient for REALBasic & RealStudio is the ultimate class for sending email.

Search search engines or clean up email quotes.

An awesome email notifier for Mac OS X

Mail.app plug-in allows sending of secure email.

MailHub is a new plug-in for Apple Mail which revolutionises email management.

Integrates full email functionality into FileMaker.

Fight spam with this email filter app.

MMEmail is a user-friendly send email plug-in for FileMaker Pro 7 and later.

Portable Thunderbird OS X is the popular Mozilla Thunderbird email client.