Used to informally ask someone for their opinion or feedback.
“I've picked a few venues for the party — let me know what you think.”
“Let me know what you think about moving the trip to next month.”
This casual phrase fits CELPIP Writing Task 1 emails to friends or family, such as sharing a plan or idea and inviting their opinion. Avoid it in formal emails to companies or managers, where a phrase like 'I would appreciate your feedback' is more appropriate.
Synonyms: tell me your thoughts, what do you think, give me your feedback