A friend uses MailMate[0]. It seems to be a bit pricey (50 USD), but considering it shot the fundraising campaign for the next release by 170%[1], I'm sure ther

A friend uses MailMate[0]. It seems to be a bit pricey (50 USD), but considering it shot the fundraising campaign for the next release by 170%[1], I'm sure there are fans here. [0]: https://freron.com/ https://freron.com/ [1]: https://www.indiegogo.com/projects/mailmate-2-0-the-email-client-for-the-rest-of-us#/ https://www.indiegogo.com/projects/mailmate-2-0-the-email-cl...