Some of our emails seem to have less text than images:
How does this ratio work? Is it a ratio of
PS: the "source" link redirects to Apache SpamAssassin: Welcome. This leads to Rules/HTML_IMAGE_RATIO_02 - Spamassassin Wiki but it doesn't give much info. Also, SpamAssassin score explanation and how to improve it | MailKitchen - Free Email Marketing gives a ratio of 2/3 text - 1/3 images, but what does that mean? Number, bytes.. ?
Please see if this link can be helpful for you. Quite good explanation.