Hi I wrote this letter as a second followup letter. I forgot to add how I fit in the position (second para) in my first letter, so i thought to include in this one. I am not sure if that is a good idea, comments would be encouraged.
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Hello firstname,

I hope you are doing well. I wanted to follow up on the interview I had with (interviewer 1)and (interviewer 2) last week on day mm/dd.

Discussing about the position with (interviewer 1)and (interviewer 2) reinforced my interest in this position. I am confident that I fit perfectly for this job with my exposure to both skill 1 and skill 2 along with the keen interest to learn. I am also certain that working directly with the clients at (previous company) would enable me to work closely with the customers in an event of any issues.

I am interested in this opportunity and I look forward to hearing from you.

Regards
My Name
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I would appreciate a quick response as I need to send it out today. I appreciate your help.