Remove the error and clean my code to send mail automatically from excel

Dear outlook Experts,
I want to send the mail from excel automatically on a particular day on birthday. The program is working fine but only I have to open the outlook first and then excel to send the mail automatically. Actually I don't want to open the outlook before sending the mail from excel. I want to open the excel file only and the mail should deliver automatically from excel only and no need to open the outlook first.

Please see the file and solve my problem. Please don't change the program because it's giving me desire output. Only change the code to send the mail from excel without opening the outlook first.

Thanking you in anticipation.

Mukesh