I thought I saw this somewhere, but I'm now not to sure. Is there a way to display custom blocks of information?
I thought there was a way to tag a section to display if a custom field was matched. Ie. Purchased=True display <...>.
there's currently no feature for doing so.
In some cases, you will however be able to add the entire content block to a custom field. Otherwise, you can send separate campaigns to the different segments.
Just to add on to Stig's point, it's worth knowing that custom fields can hold up to 250 characters (including spaces)