Strong grammar and a rich vocabulary are vital for the PTE core email writing task.

Grammar: Use correct tenses, ensure subject-verb agreement, and avoid run-on sentences. For instance, "I am writing to inform you..." is better than "I write to inform you..."

Vocabulary: Employ varied and precise words to avoid repetition. For example, use "assist" instead of "help" in a formal context.

Proofreading: Always review your email to catch errors in grammar and word choice.

Practicing these skills ensures that your writing is clear, professional, and impactful.