The search field (Ctrl + K) allows you to search the web without switching to a web browser. The Thunderbird alerts you when you click on a link which appears to be taking you to a different URL than the one mentioned in the message. It offers the Do Not Track option and also offers phishing protection. When it comes to security and privacy, the Thunderbird is certainly ahead of its competitors. Thunderbird looks for the word attachment in the content of the email, and if it finds the word attachment or attach and finds no attachments, it reminds you to attach a file when you try to send the email. The attachment reminder reminds you to add an attachment before sending an email. The feature list continues with attachment reminder. You can set the priority, change the progress status, add attachments, specify state and end date, add location and more.

As the name suggests, it allows you to write down all your to-do lists and manage them. The tasks feature is another handy feature available in Thunderbird.

This is probably one of the best features of Thunderbird as you can work on multiple emails at once. In Windows 10 Mail and some other email clients, you cannot keep multiple emails open. The tabbed interface means you can open emails in separate tabs so that you can keep two or more emails open, and quickly switch between them. Just enter your email address and password to add an email account. You don’t need to know IMAP, SMTP, and SSL/TLS settings. Adding your email account to the Thunderbird is straight-forward.

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