Try our email scheduler (http://www.repeatmail.com)  - it won't do the if A
then a.xls  but will allow you to send multiple individual emails, html or
plain text, with attachments, either as a one-off or regularly at a
specified time and interval. The recipients list can be drawn from your
Outlook Contacts, a plain text file,database or spreadsheet.  It also allows
you to specify the interval between each send so as to avoid triggering any
spam limits on your account. Outlook is not needed to send. Your machine
needs to be switched on, but you don't even have to be logged in. Works with
Win  98/XP/2003/Vista

Because it can be driven from a Sql query (and obviously against an Access
database) then it may be able to accomplish your requirements in some other
way.