Hi {{first_name}},
It's been a few weeks since our [[your product]] demo. I wanted to check in: is [[the challenge you discussed]] still on your radar, or have things shifted?
Since our call, we've [[one new development: a relevant case study, a product update, or a new feature]] that connects to what you were evaluating.
Happy to reconnect if the timing is better now.
[[Your name]], [[your company]]