Gmail area is growing with each passing second. Therefore, no need to delete mail, or even your important documents, you can store files in Gmail. You have sent an e-mail or by selecting tags that you can, then you can find what you are looking more comfortable. You can consider such as labels in Gmail folders in Windows Banking, e-invoices, your domains, separately for business and official correspondence can use tags, labels can color. Gmail’s search feature is very nice and gives accurate results. You can search in Mail.
Firstly sign in to Gmail mail (https://mail.google.com) Carefully watch the video below.