In Gmail there is no insert/upload image option by default. Let me show you how to enable the option so you can upload and insert an image into the email or insert an image by providing url.
Sometimes people send you a whole lot of attachments in their email and downloading one after another can be really time consuming. Let me show you how simple it is to download all attachments at once.
If there is a vast number of unimportant unread emails accumulating your Gmail inbox and it's starting to bother you, but you don't have time or nerves to mark them as read page by page, this is what you can do.
I will show you how to enable desktop notifications, so you will notice a new email, even if you are not in the window where you have your Gmail account open.
If you were wondering where in Gmail can you actually see all the contacts you have stored with the help of your Android phone or any other way, this is how you get to see them.