Remember me to
Definition 1 of 1
Pro Tip 1/3Social Connection
Used when you want to maintain a social bond by passing friendly greetings via a mutual acquaintance. 
I haven't seen Nora in ages! When you see her, please remember me to her.
Pro Tip 2/3Indirect Courtesy
Indicates politeness and courtesy by showing that you keep others in mind, even when they're not present. 
Your cousin was always kind to me. When you write to her, remember me to your cousin.
Pro Tip 3/3Positive Greeting
Conveys positive intentions and good will towards someone you may not be able to greet in person. 
Your brother helped me a lot last year. Remember me to him when you call.