I just recently started mining ZCash and provided my ZCash address to the pool.
I found out *afterwards* that JAXX does not want you to use their wallet for mining.
I panicked as I was nearing my first payment from the mining pool and can confirm that my transaction *did* indeed come through successfully. However, being that JAXX do not want it used for mining.
I created a cryptonator account and will be using them moving forward - they seem like a better option.
You can transfer funds within the sire and they also have two factor authentication which JAXX lacked.
I wish they had made it more obvious to the end user that JAXX should not be used for mining activity. That has a huge impact!