It can ease the tension and help someone who is not ready for reunion take the necessary time to adjust and then accept reunion. Many Birthmothers have never told anyone about you. It was a deep dark secret and they were ashamed of all of it. Then to have given a child away, well as the years went by and thinking changed it has made that aspect worse. So now here they are wanting to meet you to know that you are all right and terrified to tell anyone about you.
Some searchers find it easier to write a letter.
If you want to do that be certain the letter does not fall into the wrong hands. This means the only person who can sign for that letter is the person that you address it to. When doing this there is still a need to be careful about what you put in the letter. Your birthmother or birthfather could have a child with their same name. If the husband or wife knows about the letter they may well ask about the letter.