
Balsa
Email utility

Claws Mail
Lightweight and Fast GTK+ based Mail Client
Desktop Webmail
Compose email in browser

Evolution
Manage your email, contacts and schedule

Geary
Send and receive email
Sync Mail Dir
Synchronizes mailboxes in Maildir format
Gmail Notifier
Gmail Inbox Monitor

Gnome Gmail
Integrate GMail with your desktop

Gnubiff
Gnubiff is a mail notification program.
KMail
Send, receive and manage your mail with KMail

PIM Setting Exporter
PIM Setting Exporter allows to save all data from PIM apps and restore them in other system.

KTnef
A viewer/extractor for TNEF files
Mail Notification
Get notified when new mail arrives

mutt
Simple text-based Mail User Agent

Sylpheed
E-Mail client

Thunderbird
Send and Receive Email

Thunderbird Mail
Send and receive mail with Thunderbird
GNUMail
Mail client for GNUstep

Mailnag Configuration
An extensible mail notification daemon
Notmuch (emacs interface)
Emacs based email client

Akonadi Console
Akonadi Management and Debugging Console
Unity Mail (service)
Display notifications about new mail
Unity Mail
Mail notifications and counter for Unity/MATE/Xfce/LXDE/etc.

Kube
Send, receive and manage your mail with Kube

Seamonkey Mail
Send and Receive Mail with Seamonkey
neomutt
Simple text-based Mail User Agent
Easy Mailer
Send and receive mail
Astroid Mail
Graphical notmuch email client
alot
Terminal MUA using notmuch mail

PIM Data Exporter
PIM Setting Exporter allows to save all data from PIM apps and restore them in other systems.

KMail Import Wizard
Launch the import wizard to migrate data from mailer as thunderbird/evolution etc.

Thunderbird on Wayland
Send and Receive Email
KMail Refresh Settings
Refresh KMail settings
Sieve Editor
Edit IMAP Sieve filters
SeaMonkey
Send and receive mail with SeaMonkey

Bubblemail
Bubblemail Settings