Verified answer

The second one is correct.

The subject of your sentence is plural: generosity and kindness.

Therefore your verb should be plural also: are.

Your generosity and kindness are greatly appreciated.

your generosity and kindness are greatly appreciated.

the first one

the sentence correct is: your generosity and kindness are greatly appreciated.

Are. Two singulars acting as plural. 'Nuff said.

Your generosity and kindness is greatly appreciated.

is...i think it depends on what your talking about, but I'm pretty sure it's the second

The second one will work or you can use the new

craze "ghetto talk" just put "thanks folk" :)