Good days,> I have a problem of programming, have seen all the examples in the forum but I do not manage to do it.> > I have 2 tables the first one belongs to the users registered with his emalis category etc ... and other one is a table in which the client signs with a field also of category etc.... now well I want that when the client chooses a category automatic him send an e-mail to the registered users who also has the same category, i can´t do this and I need this to end the project.> Thank you.> > I need an example that the categories are the same to send these users.> i dont speak english sorry