Whether you are interviewing, just starting, on continuing ongoing work on a project, you will be communicating with the company and the employers of that project almost constantly.
Here are the best ways you can communicate with those employers.
Be professional
Whatever the means of communication, communicate to the employer as you would in a professional role. Be courteous, pay attention, be proactive.
Meet expectations
If the employer has asked you to a meeting and has provided you with an agenda or items to come prepared with, come prepared. Have discussion points ready, be prepared to present as needed, ensure your equipment works ahead of time.
Be clear
Why are you contacting this person? What is a clear action they can take in response to your message? In general, most people are willing and happy to help, if they are clear on how they can do so.
Batch your communication
It is easier and more time efficient for companies to answer several questions at the same time. Try to ask as many questions as you can in the same conversation.
Set a team lead
If you are working in a team of 2 or more, is can often be beneficial to designate one person to be the main point of contact with the employer to cut down on the number of individuals they are communicating with.
Follow up
Remember that employers are busy and have full time jobs on top of supporting you on project. Allow an adequate amount of time between your first message to an employer and any follow up messages you may wish to send.
Report bad actors
If you are unable to communicate with your project's employer or you have a negative interaction with them, report that actor to your experience administrator immediately so that further action can be taken.