Preferred email size including external images
We would like to know what filesize an email should stay below in a real-world scenario, including its images which are hosted externally on a CDN.
Some of our emails are much bigger than others. Currently they've been ranging from 80KB to 600KB.
What is the ideal/preferred filesize limit for an email?
And what is the max filesize limit for an email (that we should never go over under any circumstances)?