Due to medical problems, I was not able to continue my job at a famous IT company in Chennai. I went to office only on the first day (the induction program) and could not go to work from the second day (ie, I did not start working formally). I submitted a bond for two years on the first day. I spoke with my HR and he understood my situation. I emailed him my resignation letter and he accepted the same via email. He told over phone that he would give me waiver for the bond breakage fee as my case was genuine. Now, is the email correspondence enough for proper relieving from the company? Or should I get a release/relieving letter from the company in order to avoid problems in the future? The release letter must be obtained from another branch of the company and I am worried if they would ask for bond breakage fee or would create further problems. My HR advised me that release letter for one day of work will not be helpful. What should I do to avoid background check related problems when I join another company? Please help me.