"what to expect when looking over AquaMail logs"
Normally, and by default, logging is disabled completely.
It's a feature that's only used for *remote* diagnostics when something goes wrong.
Works much better than asking a user to "just bring the phone over".
Other than that, sorry, I didn't understand your question at all...
AquaMail does not send its log file anywhere, and it's disabled unless enabled by the user.
There is one exception, a different kind of log, the crash postmortem, called log-AquaMail-crash.txt.
This one is recorded automatically, if the app crashes. Does not contain the identities of your email accounts, much less actual message text or passwords. Does not get sent / uploaded anywhere automatically either.