[tracker1]

+1 on this... I'd say do a 30-day trial period, then around day 25 ask for billing information... If you have tracking/analytics in place you know how many users are returning once signing up, and you have a better indication of conversion after use.

If you're going to have a free tier, I'd say limit it to N service integrations (3-5), but definitely make your core users paying close to the start.

If I had a need for something like this day to day, I'd definitely pay... Actually, I'd suffer for a while, then try it, then suffer again, then pay... but that's me and I'm kind of cheap/frugal. Most people will start paying once they see and feel the value.

Also, it's much easier to field requests from a few hundred paying users than thousands of non-paying ones. It's very hard to do conversion from free after the fact... many businesses have failed, burned, burned out, and left their best (paying) users in a lurch following this model.

[tudorw]

+1 for all that although I'd be tempted to get the billing info on sign up and offer a 'throwaway' good deal for the uncertain, so, say $50 a month, or try 10 days for $3