Due date automatic email reminder excel vba

Hello all,

I am a beginner to excel vba. I have a column (I) in my excell sheet called DUE IN. I would like to send an email to outlook when the cell value is less than 3 (2,1,0,-1,-2...) even when the excel file is closed. I would also like to send the email at a particular time in the morning with the data in column C and D cells in that row as the body of email.
I would like to extend this to a range of 100 data.

Any help would be much appreciated.
Thanks in advance.