Hello aspirant,

Hope you are doing great. So, with regard to your question, after completion of three rounds of interview in cognizant, the company will mail you within 10 days to your mail, that you have provided, otherwise, if it wasn't done, then they might send within 1 month, however, if there is no mail regarding it even after one month, the chances that you might select are really less. You can proceed for other job,

Hope it helps you,

Thank you.