Nice mail client! Like others - 3 to 4 years ago in discussions here - I’m (only) missing a Google Keep implementation! Would be great if you could put that into practice 
It’s the only feature that seems to be absent - I’m just testing the client coming from Thunderbird.
Hello,
Thank you for the positive feedback. We’re sorry that we’re currently unable to provide this feature, it is however not planned at the moment
Regards,
Maurice