Is the content of the letter grammatically correct? Plz, do advice how to maintain a good flow in a paragragh writing

How are you? Did not see you online from last couple of days? I have sent my cover letter and resume to your company's HR manager. I am wondering if you could help me with email id of RIL HR manager. The one I have is: ....@rediff.com, but I am doubtful about its validity. I found this email id on toostep website, which is not popular in my knowledge. Anyways, if you can manage to get his email id, that would be of great help to me.