With utmost respect, I __________ (name) having ______________ (registration/roll number) has successfully enrolled/completed my _______________ (High school/course name/graduation/other).
I write this email to draw your attention that I have applied for ______________ (higher studies/job/any other). Therefore, I request you to kindly issue my original certificates that I had submitted at the time of admission of the ____________ (course). I hope that you will accept my request and do the needful.
Thank you for your valuable time and support. If you need any further information, you can always contact me on the details given below.
___________ (Roll number),
___________ (Contact Number)