Mozilla Thunderbird is an email and news client from the Mozilla Foundation, the same creator of Mozilla Firefox. It is one of the most used clients today.
It is full of features, for example, it has image blocking, a built-in anti-spam filter, a mechanism that prevents scams through messages and much more.
Its interface is very friendly and intuitive. To start using it, just enter your email and the client will be responsible for making the technical configurations, automatically detecting the servers and ports.