Email Clients

Thunderbird
Free
A free email application that's easy to set up and customize.
Mailspring
Free (Open Source)
Boost your productivity and send better email with Mailspring.
eM Client
Free
A full featured email client with a modern and easy to use interface.
OutlookAddressBookView
Free
Displays the details of all recipients stored in the address books of Microsoft Outlook.
OutlookAttachView
Free
View / Extract / Save Outlook Attachments from command-line or GUI.
Claws Mail
Free
The user-friendly, lightweight, and fast email client.
POP Peeper
Free Trial
A free email notifier for Windows that allows you to monitor your IMAP, POP3 and webmail-based accounts.
EssentialPIM Free
Free
Let you manage appointments, tasks, notes, contacts, password entriesand email messages.
Howard
Free
Get notified about new mails in your outlook.com, gmail, yahoo, e.mail.ru, orange.fr, IBM / Lotus Notes, virgilio.it and zoho.com inbox.
Mbox Viewer
Free
A small but powerfull app for viewing MBOX files.
Pegasus Mail
Free
An e-mail client that interacts directly with the user, allowing mail to be sent, read, filed, printed and otherwise manipulated through a graphical interface.
PopMan
Free
A free POP3 manager which can be used to list all emails lying on your incoming mail server (POP3 or IMAP4 server) without having to load these emails completely.
MailCheck
Free
An email monitoring and validation utility.
Mailbird
Free Trial
Connect all your favorite email, calendar, task and messaging apps into one.
TypeApp
Free
BlueMail
Free Trial
Spark
Free Trial
Tutanota
Free
Secure email for everybody.
OutlookTools
Free
A support and advanced settings tool for Microsoft Office Outlook.
PopTrayU
Free
Email Notifier For Windows.