Mozilla Thunderbird is a popular, open source mail client that lets you access multiple email accounts—including most webmail. With it you can save your emails for offline reading, and you can reply and compose email even when you are away from your office.

Thunderbird also has a variety of add-ons that you can install to customize your Thunderbird experience. Read our Thunderbird setup instructions for a list of add-ons we do and do not recommend.