Subject: [Similar Company] case study - thought of [Company]
Hi [First Name],
Hope things are going well at [Company]! Been meaning to share something that reminded me of our conversation.
We just finished a project with [Similar Company] - they were facing the exact same [Challenge] we discussed for [Company] last year.
The results were pretty incredible: [Specific Results]. What made it work was [Key Success Factor].
Since [Similar Company] is so similar to [Company], thought you'd find the case study interesting. Even if you're not ready to move forward, the insights might be valuable.
Want me to send it over?
Best,
[Your Name]
P.S. [Similar Company] CEO said this was "the best investment we've made in 5 years."