Thanks so much for your message I really appreciate it! A few quick answers: - For now, it's only available on macOS. Windows & Linux versions are coming next

Thanks so much for your message I really appreciate it! A few quick answers: - For now, it's only available on macOS. Windows & Linux versions are coming next month. - Yes, you can choose the sender address if you have multiple aliases available. - I haven't planned to implement a calendar for now. I see it as a separate project. But that might change depending on user feedback ;-)