I received cards/donations from different groups on my job. Is it proper etiquette to send a group “thank you” email to those listed on the card? If so, should I bcc them or add them all to the “To”? If not, is an email appropriate at all?
It is always better to send a handwritten thank-you note. For collective gifts, it is perfectly appropriate to address it to the entire department or group.
While we would never encourage you to send a thank-you note by email, if you must, then you should send the emails individually, not by way of a cc or bcc. You could phrase it something like:
Dear Frank,
Thank you so much for your contribution you made to the xxxxxxx gift you sent in memory of my father/brother/mother/etc. The generosity of the entire xxxxxx group is greatly appreciated.