Congratulation Messages For New Baby Would You Tell Your Husband's Ex-wife Congratulations On Her Pregnancy?

Would you tell your husband's ex-wife congratulations on her pregnancy? - congratulation messages for new baby

anything but friends are, but I'm happy for them because they were trying to have a child over an extended period and that the miscarriage last year. I think that sending a message that their congratulations, but I'm not sure where appropriate. What is your opinion?