Streamlining my angel investor list

Advice, please.

I just emailed a list of angels I maintain manually to let them know that one of my companies is raising and happy to take investments from angels.

I want to make the list frictionless to join, like a newsletter. I already have a monthly newsletter on Substack. I want to maintain separate lists.

What's the best and easiest way to do this, please?

#founders #startups #venturecapital #buildinginpublic #investinginpublic