There are many parts of a job search, from smallest beginning steps to the final offer. And wherever you are — even if just doing some exploratory research — PLEASE do not job search using company email. Despite the desire to show off your company or seem more official perhaps, it’s wise to exercise extra caution when looking while employed.
So as soon as you feel even a whisper of longing to move on from your current job, create a personal email account for yourself if you don’t have one yet. And only use that one for your search. Including things like getting back in touch with former bosses and coworkers. Even contacting a career coach best begins from your own personal NON-OFFICE email, like Google gmail. (Easy to sign up and get started.)