In terms of a text to image ratio in a message, you may need to adjust how much or how little text you have compared to the amount of images. Somewhere between 40 to 60% is the sweet spot for SpamAssassin. Is there an exact ratio? No – it’s more like not too much, not too little, but just right, so you may need to send several test messages and check their spam scores to get the points for “not enough text” to go away or drop significantly. For sure, you don’t want a message like this being sent to your recipients (just like how 100% text can be boring):
