Mac Apps for E-mail Software

Enigmail

Free

Encrypt and sign emails with GPG in Thunderbird and SeaMonkey.

Digital Tweaks Mailbox to PST Export Tool

Trial version

Export apple mail (MBOX) to outlook windows (PST), including contacts and calendar events.

MailBar

Trial version

Manage your inbox from the menubar.

Mail Scheduler

Trial version

Schedule your sending of e-mail in advance.

Kerio Connect

Trial version

Alternative to Microsoft Exchange.

PicSecret

Free

Hide secret message in regular pictures.

MailRecent Mail Plugin

Free

Copy to, move to, or open a recently used mailbox.

PstExporter

Trial version

Convert Outlook pst files to mbox.

ListSTAR

Trial version

List server manages email groups and on demand services.

LDapper

Free

LDAP client for finding email addresses, no LDAP support needed in email client

Notify

Trial version

Put a compact e-mail client into the menu bar.

SysTools Mac Yahoo Backup

Trial version

Download and save Yahoo emails on Mac system efficiently is Mac Yahoo Backup Software.

Mail Stationery

Paid

Collection of 100 top-quality templates for Apple Mail.

Mail Beacon (OS X)

Trial version

Read your e-mail online and filter out spam or large attachments.

E2A Eudora contact importer

Free

Eudora to AddressBook import

Max Mailwatch

Free

unread IMAP message checker in the menu bar

SysTools Mac MBOX Converter

Trial version

Convert Mac MBOX Files to PST, PDF, EML, EMLX, MSG, and HTML on Mac system.

Mailvita EML to PST Converter

Trial version

Convert EML files to PST format.

Outlook Exchange Accounts Optimizer

Trial version

Ensures your Exchange mailbox never gets full.

Eudora Mailbox Cleaner

Free

Migrate eudora/thunderbird to mail/thunderbird.

SysTools Mac Hotmail Backup

Trial version

Export emails, contacts, calendars to PST & other file types to PC.

GyazMail

Trial version

Cocoa email client.

Mac Outlook Attachment Extractor

Trial version

Extract attachments from multiple email files at once.