The biggest productivity boosters are filters and labels, once you have them setup. This works if you are working on recurring themes (long running projects, recurring tasks such as billing, etc). I imagine everyone has keyboard shortcuts enabled.
If you like using labels, you should probably be using sub-labels also.
Another trick that is indispensable to me is creating a contact for "note to self" with myhandle+note@gmail.com. Then you can filter such mails and apply a yellow label. With this setup you can send yourself notes whenever you want. You can also add private notes to existing threads which I find very helpful.
I may be wrong but I think emails in tabs are classified based on the email address so it may not work when the email address changes. It should work if you continue training but I am speaking only from personal experience.
If you like using labels, you should probably be using sub-labels also.
Another trick that is indispensable to me is creating a contact for "note to self" with myhandle+note@gmail.com. Then you can filter such mails and apply a yellow label. With this setup you can send yourself notes whenever you want. You can also add private notes to existing threads which I find very helpful.
I may be wrong but I think emails in tabs are classified based on the email address so it may not work when the email address changes. It should work if you continue training but I am speaking only from personal experience.