Email clients offer a variety of features. Many email clients offer a slew of features, some stick with just the basics. At the end of the day, what is important is that you find an email client that offers what you need, it is reliable, and works well on your computer. Thunderbird is widely regarded as an exceptional open source desktop email client, especially on Linux. It is highly customizable, has a rich set of features, and is geared for both novices and professional users. My only real disaffection with Thunderbird is that it can feel a bit sluggish on inexpensive hardware. If you are looking for an alternative first-rate graphical email client that works with limited system resources, you have come to the right place.