Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
To get started, I need to know what type of computer you're using.
Windows XP, Widows Vista, Windows 7, Windows 8, Or a Mac.
If it's a Mac, please check the OSX version as follows.
Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.
Also, What email provider are you using. Gmail, AOl, Yahoo, Outlook.com, etc?
And are you using any email clients such as Thunderbird, Mac mail, Outlook 2013, eudora, etc?