[arvidjanson]

To me, this more or less sounds like "I'm having trouble converting, so let's focus on the really, really, really interested users". In some occations this might be the right choice to make (the service you're providing have very low margins or it's a very complex service, so overhead from support becomes costly, or time is very limited), but in general it seems like very bad recommendation.

More likely it's your value proposition that is weak – either your customers don't understand what (value and/or service) you're providing, or your onboarding is just not good enough.

If you fail to tell your visitor what you're actually offering (before they signup) you might end up with a lot of users that sign up, just to learn what service you're actually providing. This is obviously much more likely if you're not requiring a credit card at signup. Try to have people understand WHY they're signing up before they actually do. They should be convinced that you're the right choice before entering their email.

Second: Your onboarding process is not over when the user has created their account. Guide your users. Give them examples, feedback and inspiration. Still having trouble getting started? Email them a week later and ask if you can help. Keep giving them reasons to come back and eventually convert.