SAAS Conversion benchmarks

Looking for some benchmarks to help measure our progress by. We’re a SAAS company so am looking to find some best conversion metrics we should be shooting for.

Specifically looking to know standard conversion rates on a these things:

1: Opt in to trial user activation
2: Trial user activation to paying customer
3: First email after opting in open rate and click rate
4: Down campaign stream email open rate and click rate