I want to second/third/etc. the desire for a way to make donations and the request for the addition of calendar support. Ultimately, I’d really like to see full MS Exchange support (EWS/EAS) – Nylas had Exchange support and I’ve seen the old Zendesk article about the plan to add back Exchange in the future.
I’m seeing more and more pent-up demand for MS Outlook client alternatives from individual (non-commercial) users. These users have already found viable opensource alternatives for the other MS Office apps, but true Outlook replacements are scant.
When I’ve asked these users if they would be willing to kick in funds towards development of an opensource Outlook alterative they’ve all been enthusiastic about doing so on a donation basis.