Update
On August 18, we reported that Yahoo/AOL had been giving us trouble with email deliverability. We are happy to report that we believe those problems have been resolved now. On Aug 30, Verizon (also AOL, Yahoo)'s Postmaster said that for our domain "they're now seeing a 97%+ inbox rate over the past week, which is extremely good!"
That still doesn't mean on occasional messages can't go to the spam folder. One thing you should do to tell you email provider that MorphMarket emails are important is to whitelist our email addresses. Find out how to do that under step #2 here.
Also, PRO TIP for iPhone users using the Mail App: add '[email protected]' as a VIP address, which will star it, prevent spam and can even enable push notifications. Here are the full directions. Thanks to Stephanie at SNK Kreatures for this tip!