Ok, as is usually the case, Im more confused now, but please bare with me:
1. Right now Im using safari to view my personal gmail which is always signed in, and using firefox to view my new info@ gmail business account. I see the Add Account button when clicking on the top right avatar of myself. So that won't CREATE a third account, right? it'll just 'link' my existing-new-business gmail account to my personal one? And you say I will be able to view both accounts in the same browser but on different tabs? Sounds like trouble but Ill trust you :)
2. I dont understand. I haven't changed any MX records. Yesterday I simply clicked on the button to create a Gmail for business, added my existing domain, added the meta tag to my existing website to verify the domain ownership on google, clicked on the link to verify my email address (btw, this was weird because i received the link-verification email at info@domain but since I normally check that in my personal gmail account, I wasn't sure if it meant i was getting my new business email or my old pop3 configured one). Other than that I haven't changed anything. What should I do here?
3. What I want to do is that currently, in Acompli, my default account is my gmail because my business one is only a pop3 which acompli doesn't support yet. So when I reply to emails, even though I've added an alias for my info business email account, it won't let me set that alias as a reply-with account automatically. So every time i get an email, i reply and forget to switch from my persona gmail to my info alias, and I end up replying to business contacts using my personal email. So once I can configure my new business gmail account on it, ill be set!
Thanks