The issue was caused by an uncontrolled bouncing of bounces of emails sent to the myphoner dropbox. We saw a drastical rise in email activity (+50K emails in a few hours) and an automated fraud prevention mechanism kicked in and blocked all email processing.
Aside from a temporary fix on our side, we have now identified and implemented a permanent fix to the myphoner dropbox processing algorithms.
We are now awaiting the security team with our email service provider to verify and re-enable our account. This could take several hours still.
We are truly sorry about the inconvenience and doing our very best to get the issues resolved asap. The reason the security measures here is so rigid is because it's very important to take possible email fraud seriously, as it could affect the service far out in the future if real fraud was going on undetected for a longer period of time. In other words, we're not taking any chances here.