Have you checked "My Accounts" to make sure that the accounts you have set up are still active? Check that first. If, for whatever reason, they have become deleted or inactive. I would merely re-set them up. You might also go to Google, then to GMail to see if you are still on, if you signed up for Email. Try downloading KMail. It's an apps which works better than the Email apps on the Droids, but after you set them up again.
Maybe you can help me out also. My brother has got the LG Spectrum and we cannot figure out a fix. Here's the steps we're trying to do to compose an email with Gmail and attach a photo file.
Open Gmail app, get the inbox.
Tap compose and get a compose email screen.
Add a contact to send to.
Tap the attach selection.
Select Gallery. (Selecting Pictures only gives him pics which were transferred from his older phone by the Verizon rep.)
Select a pic from the Gallery, but it opens the pic full screen.
Tap the pic and it give the options to Delete, Share or More.
This is where we are stumped. Why would it not just attach the pic when he tapped on it to select it and then take him back to the compose screen where he can send the email? It appears that the other generic 'Mail' program is taking over somehow. I could not find any way to set the Gmail app association on his 2.3.6 software version phone. He has no App Association selection available like I do with my HTC One phone.