Yeah, we had some problems with that. We moved our servers to a co-location site to deal with increased traffic a few months ago, and we ended up moving into a location (in IP space) where an ex-spammer used to reside. It's been a huge headache not only for ShareCG, but for our parent company (who also moved there), since we deal with lots and lots of e-mails. Hopefully this'll be fixed soon.
In the meanwhile... please keep checking your spam folders!
Best,
Jake