Approval by email Request IT Shop

Hello,

I need send email by approve a request IT Shop.

I have reviewed the configuration that I have to fill and I have doubts. The configuration is:

QER | ITShop | MailApproval | Inbox

QER | ITShop | MailApproval | Account

QER | ITShop | MailApproval | Domain

QER | ITShop | MailApproval | Password

How do I fill these fields?

I have a mail that I use for to send to Notifications. Can I use it in the field Inbox?

Greetings.