I love Zoho Mail. I pay $12/year and can have as many emails as I want. For example, I have set up an email for my personal domain, and 3 of my projects. It is

I love Zoho Mail. I pay $12/year and can have as many emails as I want. For example, I have set up an email for my personal domain, and 3 of my projects. It is very easy to do with their docs. You could stop there, but I redirect all those email to my GMail address (I just prefer Gmail UI). Then I set up labels for each email and now I have 5 different email in my GMail Account.