Examiners evaluate PTE core email writing based on specific criteria:

1. Task Fulfillment: Does your email address all aspects of the prompt? Missing details can lower your score.

2. Structure and Coherence: A clear and logical structure with an introduction, body, and conclusion is essential.

3. Language Use: Polite and professional language free from grammatical errors is a must.

By focusing on these areas, you can meet the expectations of the examiners and score well.