Gmail has three additional options for getting your mail. They are Forwarding, Pop Download, and IMAP access.
These added options can make your gmail act just like a regular email account. You can use Outlook, Thunderbird, iPhone, or almost any other email client. If you could care less about all these options, just disable them all. If you've not had strong passwords in the past, it's a good idea to check that criminals did not set your gmail to forward everything to them.
First login to gmail then select “Settings” from the upper right corner.
The settings screen will appear. Select “Forwarding and POP/IMAP” from the settings tabs.
The forwarding and POP/IMAP settings tab will appear.
If forwarding is not enabled, your screen will look like this
If forwarding is enabled, your screen will have additional information in the forwarding section. To disable it and POP/IMAP, the areas boxed in red must be selected.
Look at the address it is forwarding to. Do you know the email address? If not, you might have a problem. If you don’t know the address, print the screen, disable forwarding, and call your local police department. Most local Police will give some assistance in matters like this.
Is POP download enabled? If it is, you may have set it up once and forgotten about it. This is less harmful than forwarding, since when your Gmail password changes, your pop password will have to change with it. If you are not using it, disable it.
Is IMAP Enabled? If it is, you may have set it up once and forgotten about it. This is also less harmful than forwarding, since when your Gmail password changes, your pop password will have to change with it. If you are not using it disable it.
Forwarding, POP, and IMAP can be very helpful in winning your daily email struggle. If you need these tools, use them. POP is good for backing up your GMail. IMAP is good for a more versatile means to read Gmail. and Forwarding is good for devices that may not support POP or IMAP.
One of the golden rules in computer security is, if you don't use it, disable it. Risk is always reduced when complexity is reduced.