A huge thank you to ShezShe has published a solution to our problem about blog comments not coming through to our emails
After you do what she recommends - you should get an email asking you to confirm the change you made (ie that emails will go to your account). If you don't get that email it might be because you didn't save your settings after you originally deleted your email address.
Could be worth trying again.
AND then the comments after that should drop into your email as before!!
It has worked for me - hallelujah!!