congratulations on.
No, you cannot say, they send their congratulations. You have to say they sent their congratulations.
congratulations
"Proficiat" is how you say congratulations in Flemish.
no flowers say congratulations
In Filipino, you would say "Congratulations" as "Congratulations" or "Pakaka-bait."
You can say "čestitke" in Bosnian to say congratulations.
In Hindi, you can say congratulations by saying "बधाई हो" (Badhai ho).
"félicitations"Congratulations is 'félicitations' in French. You can also use congratulations (same orthograph), but this is much less in use.
congratulations on your wedding
Ho'omaika'i means congratulations.
In Latin, you can say "Gratulor," which means congratulations.