A very interesting video about the Thunderbird Project successful donation process and how KDE can improve them by following their step.
A very interesting video about the Thunderbird Project successful donation process and how KDE can improve them by following their step.
Even Windows ships with one ("Mail"). I don't have any real experience using it (on my Windows work laptop I have Outlook, and on everything else I use Thunderbird), but it looks fine to me.
I have no idea what the pricing scheme is for Outlook these days, but Outlook does remain genuinely excellent too.