Some of my team members worked in a project in amazing way.
We managed to deliver on time and these guys worked day and night to achieve that.
I would like to send a Thank you email recognising the effort they gave CCing the senior manager.
My concern is that, will that make the other employees who did not work on this project not happy? will that make it a must for me to send thank you email for every achievment? does that mean they have to get salary raise, bonus or any other benefits?