The EHL rules for advertising depend on the agency. The OCC as an example, doesn't require it. But it is encouraged.
I would ask the purpose of the folder. If it is delivering disclosures for a requested loan, it is less of an advertisement and more of a response to specific terms. If it is sent cold, such as "see what you qualify for" then it is more of an ad, IMHO.
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AndyZ CRCM
My opinions are not necessarily my employers.
R+R-R=R+R
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell