Having a message-market fit, in B2B marketing, can be quantified as getting 15–30% interaction rate on the message that you proactively put out in front of your target audience.
Message market fit - does not mean you have closed a deal. And exposing yourself to rejection sometimes can hurt.
However, getting a lot of NOs is much better than not getting any resonance on your outreach.
Getting No’s means that your channel has the audience’s attention – you only have to figure out what’s driving value and what message is perceived as interesting.
This also offers a plateau where you can follow up with your audience and get their feedback to improve your communication.