The Mozilla Thunderbird is fully compatible with both 32-bit and 64-bit Windows 10. If you cannot afford Outlook or other paid email clients, Mozilla Thunderbird should be your default email client. Overall, an excellent piece of free from Mozilla. There are plenty of add-ons out there to customize and add new features.

Like Firefox, Thunderbird also supports add-ons. Options such as delivery status notification, return receipt, encrypt a message, set priority, and digitally sign messages are not available in many paid email clients. The write or compose window has plenty of options.

The email filter or quick filter toolbar is probably the best in its class as it allows you to search for emails in seconds. 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.

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