MailTypeSelectKeyboard search + navigatio
RuleBoxSync AddressBook and Mail rules
Mail2iCalTodoExport from Mail to iCal to-do
The UnreadCustomizable menubar status display
Eudora Mailbox CleanerMigration tool
MailAppetizerVisual notification
MailEnhancerVarious enhancements
JunkMatcherBayesian and regex-based filtering
SenderPixAddressBook pix in mail.app
GPGMailencrypt and/or authenticate email
PGP DesktopSecure encryption/decryption
Mail.app Conduittransfer mail mail.app-Palm PDA
MailPriorityset Priority and Notification-To headers
MailSwitchmanage multiple mail.app users
MailScriptsvarious mail and addressbook scripts
SpamRoboCopFile spam reports to SpamCop
SpamCop SendApplescript app with SpamCop functionality
httpMailUse mail.app to check a hotmail account
MailPicturesDisplay people's photos automatically
MailTemplateTemplates system for MailApp
MacResponderAutomate email response (shareware)
IpanemaReports current IP via mail.app
MailFixHack for SMTP server support of EHLO
MailCountXDisplay email arrival in menubar (beta)
MailUnreadStatusBarDisplays unread messages in folders
MailVoiceClipAttach audio to outgoing emails
SpamSieveBayesian spam filtering
Attachments IconizerToggle image display in message body
MailActOnmap specific mail rules or actions to keys
MailTagsMetadata organization of emails
PersonalAntispamFilter-based spam filtering
MailStamps 2Mail 2.0 with Panther Mail buttons!
iSaySend voice notes
iCamShareEasily send videos and pix
EmailMergeEmail merge tool
DockStarNew mail dock feedback
Serial MailSend to groups
Cage FighterTame Tiger Mail icons!
GrowlMailGrowl integration
iAlertGlobal notifier