I have an excel spreadsheet with people's certifications in them and the dates each certification expires. I have set up conditional formatting for each cell to change colour to yellow when the certification expires or the cell is blank. Based on the criteria of the certificate being expired or the cell being blank, I would like to automate sending an email to each person listing their expired certifications so they know they need to be renewed. If possible, I would like it to send one email per person, listing all their expired certifications and not one email per expired certification, if possible. I am a total beginner and don't really have any idea what I'm doing.