Over the weekend we received a group gift from four of the partners at my fiancé's employer. Three of the four have been invited to our wedding along with their spouses. I know that I should send individual thank yous to each group member, but should I be addressing the thank yous to just the partners or their spouses too? Should I send them to their home addresses or to the office? My initial thought was "address to partners and spouses; send to home address", but then I began second-guessing myself, worrying that because it's a group gift from work that sending them to home addresses would be breaking some sort of corporate etiquette code or something. (Hi, I'm a spaz.)
TIA for the advice!