Pay once is a thing of the past. As with most software recently switched to subscription model, they should have offered it at $999 per article per year, no contracts required.
A question to the guys who had severe withdrawal symptoms: did you drink it with or without sugar?
I personally don't put sugar into coffee or tea and have quit cold-turkey a few times without any issues, so I wonder if the headache and stuff might be somewhat related to sugar withdrawal, not just caffeine. Ideas?
It might work, could you explain how you convert emails to JSON? There could be quotations, attachments etc - is there a script for that? Maybe a manual somewhere?