How do you say welcome in a good way?

Hello there, I'm curious to know how one might say "welcome" in a truly warm and genuine manner. Is it simply a matter of saying the word with a smile, or are there specific phrases or gestures that can enhance the sentiment? In the realm of cryptocurrency and finance, where first impressions often matter, I'm eager to learn how to make clients and colleagues feel truly valued and welcomed from the very start. Could you share some insights on this topic?