I have several mailaccounts, 3 IMAP, 1 icloud.com and 1 Gmail. Compared with my iPhone mailapp (Edison) it takes sometimes very long time to refresh: spinning wheels on all accounts or on one or two (not the coloured beachball from Apple). In the meantime all mails are already arrived on my iPhone (I not open them to see what happens). No errors. When it takes to much time, I sometimes close eM and restart it. Then the mail arrive very quickly. I ran diagnoses test: all of them are OK.
Receiving mail on my iPhone goes quick, on my MacBook M3 slow. No errors, same mailservers therefor: it has to be something in eM.
I also have compared it with the native mailapp on my Macbook: much quicker the Em.
Is this normal for Em?