The email has numerous grammar and spelling errors.

A co-worker sends you a business-related email about the new project assignment. The email has numerous grammar and spelling errors. His language is confusing and you are not certain what the message is stating. You bring up the issue and he responds disgruntled and angrily stating that it was only an email and you are overreacting. By utilizing the concepts from the readings for this unit, how would you appropriately respond to this situation as a professional?