It is confusing when we need to think about the baptism invitations. Do we need the invitations to invite the guests and friends to see the baptism process? Some people consider the invitations as the unimportant things, because many people have the opinion that baptism does not need any guest.
Besides, people from the church will come automatically without any invitation. It is true if you have already joined the church that you will do the baptism for long time. The church will announce the baptism event several times before the schedule of the baptism process; so many people will come to your baptism event.
We can ask the church about the schedule of the baptism event, so the invitations can be prepared with the correct details. It is a good thing to see people with the newborn, so we can give the other people baptism invitations.
For some people, the existence of baptism invitations is important, because they have reasons to invite the other people. For example, if a person is newcomer in a city, he will have few relatives, so he needs to introduce himself to the public, and the baptism invitations can be a good idea. The most important thing in sending the baptism information is to understand the details of the event.