SUBJECT: [THEIR PRODUCT NAME or ACRONYM] question

Example: Bestseller Blueprint question
Example: PLF question

FNAME,

Quick question on [THEIR PRODUCT NAME or ACRONYM].

Are you doing any upsells or downsells?

I'd love to chat about some ideas I have for working together on those. I'd love to send some people your way (and vice versa).

[SHARE WHY HERE - i.e. because your product is less in-depth and cheaper or vice versa or you are missing a section that they cover]

Got some talk to talk soon?