Renaming all subject headers of all mail in a folder

[nir020]

Hello

I have in my outlook a folder with roughly 40 emails in them which I send
out on a monthly basis. The subject header of these mails is related to the
month in which they are sent out.

Is it possible to create some VBA that would when run replace/update the
subject headers of the emails in folder with the name of current month

Thanks