Add-onsAlthough Thunderbird is extremely useful on its own, what makes it really powerful is its support for tons of add-ons, themes and extensions. And like I mentioned earlier, you save local copies of all your webmail accounts for offline access. If you’re adding an account from one of the big email providers like Gmail, Yahoo, or Outlook, just enter your email account credentials and Thunderbird will search and configure your mailboxes automatically. Speaking of contacts, Thunderbird also has a built-in client support for instant messaging services including Facebook Chat, Google Hangouts and Twitter.Setting up multiple email accounts in Thunderbird is straightforward enough. Under-the-hood though, you get a customizable junk filter, automatic e-mail scam/spam protection and even antivirus program integration.Additionally, it has a powerful search function and support for tabs, tags, customized folders, and contacts.

Like any other client, you get an inbox and folder pane, a messages pane and a calendar pane. It is from Mozilla, the same company that makes Firefox, one of the best web browsers around.Upon opening Thunderbird, you’ll be surprised how sleek and simple the interface is. Mozilla Thunderbird Thunderbird has been around for years now and has always been one of the top go-to free third-party email clients for tech-savvy Mac and PC users.

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