Incoming email check frequency

Hello All,

Our users like to email us when there is a problem and upon completion or if its ongoing, we drag these emails into a dedicated inbox which uploads these emails to SysAid as new service records. I am just wondering if it would be possible to change the frequency it checks this inbox for emails. I think that it checks the inbox every five minutes but I would like this to be shorter.

I'm just wondering if this is possible at all and if so, how I would do this?