It may seem a basic principle, but we often forget. Every time we need something from someone, it is best to start with a compliment. Children often do: first they tell you you're very handsome and very strong, and then ask you to upload them ” a piggyback ride”. They are not one.
In the field of business and networking it's the same. It costs nothing to start with a “I congratulate you on your article” or “I have spoken highly of his method”. It's really simple, and facilitates the icebreaker best lubricates our relationships.
By the way, You can also end a compliment. Thanks for reading me.