Yes, I noticed this too. I am using AquaMail Pro. I use Microsoft Exchange Online. What I am noticing is that if I reply or forward a message from AquaMail, the reply/forward symbol usually shows up on the left side of the message list in AquaMail. However, this information does not show up in Exchange. If I reply to a message from Exchange the reply/forward information does sync back to AquaMail. This is an important feature, so please let me know what the status is of this request.