Sometimes there is a bit of time switching between emails. Has anyone else experienced this?
Granted, it does tend to be when those emails you are switching to are larger than the usual but I just wanted to stress the importance of closely monitoring and testing this.
This was a major issue in Mailbird when they released and 10+ years on, is still a major problem. It caused a lot of users to switch to another application.
Maintaining a quick UI should be the number one priority.