a way to reduce amount of times it checks emails ?

is there a way to a way to reduce the amount of times it checks emails ?

i have changed the “login intervals” from 900 seconds to 1800 seconds,

under “email verification”  “time to wait between 2 logins”

and ticked “per account (else pop3 server)”

i wanted to reduce the amount of times it was logging in to check the emails to increase performance,
as well i was getting loads of errors such as –

“pop3 login failed sock error connection timed out”
&
“pop3 login failed sock error host not found”

but its still bringing loads of messages “skipped email checking”
how to take these off as well to improve performance ?