What is the average size of email?

E-mails in general do not have a set size. Because of the numerous factors involved it is hard to pinpoint an e-mails 'average' size. For example, it depends on the the number of images sent, are there any attachments(?), how long is the e-mail and so on. However, a medium 80 word e-mail could range from an average of 7kb to 11kb. Some applications such as e-mailers on phones may have smaller sized e-mails ranging between 2kb and 6kb. Once again, this is using text only and not alot of it. This is a difficult question but I hope I helped. =)