I’ve been working with Gmail in my business for some time, and it’s really great option for business due to the good email organization. However, I preferred to come back to thunderbird, my old email client. This is because of the Offline support that is now missed in the Gmail, unlike the older support which I was using months ago. With some slow internet connection, using Gmail becomes a time waste. Also, there are some bugs in conversation detection of Gmail, which causes Gmail to display long email text exchanged between me and others, and hence the conversation is not good in some cases.