Q: Mail, cannot send, reply or forward messages

You are talking about email messages aren't you? Your tag line shows messages which would indicate text messages to me, but then you talk about iCloud, AOL and Google accounts which I assume is gmail.

So, what happens when you try to send, reply or forward a message on your iPad? Details?

iOS: Unable to send or receive email

http://support.apple.com/kb/TS3899http://support.apple.com/kb/TS3899

Can’t Send Emails on iPad – Troubleshooting Steps

http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/

Setting up and troubleshooting Mail

http://www.apple.com/support/ipad/assistant/mail/http://www.apple.com/support/ipad/assistant/mail/

Using a POP account with multiple devices

http://support.apple.com/kb/ht3228http://support.apple.com/kb/ht3228

iOS: Adding an email account

http://support.apple.com/kb/HT4810http://support.apple.com/kb/HT4810

iOS: Setting up an Outlook.com, Hotmail, Live, or MSN email account

http://support.apple.com/kb/ht1694http://support.apple.com/kb/ht1694

Server does not allow relaying email error, fix

http://appletoolbox.com/2012/01/server-does-not-allow-relaying-email-error-fix/http://appletoolbox.com/2012/01/server-does-not-allow-relaying-email-error-fix/

Why Does My iPad Say "Cannot Connect to Server"?

http://www.ehow.co.uk/info_8693415_ipad-say-cannot-connect-server.htmlhttp://www.ehow.co.uk/info_8693415_ipad-say-cannot-connect-server.html

How to Sync Contacts with Your iPad Using iTunes

http://www.dummies.com/how-to/content/how-to-sync-contacts-with-your-ipad-using- itunes.htmlhttp://www.dummies.com/how-to/content/how-to-sync-contacts-with-your-ipad-using- itunes.html

iOS: 'Mailbox Locked', account is in use on another device, or prompt to re-enter POP3 password

http://support.apple.com/kb/ts2621http://support.apple.com/kb/ts2621

eMail Groups - You can use a third party app that many users recommend.

MailShot -  https://itunes.apple.com/us/app/mailshot-pro-group-email-done/id445996226?mt=8https://itunes.apple.com/us/app/mailshot-pro-group-email-done/id445996226?mt=8

Group Email  -  https://itunes.apple.com/us/app/group-email!-mail-client-attachments/id380690305 ?mt=8

iPad Mail

http://www.apple.com/support/ipad/mail/http://www.apple.com/support/ipad/mail/

Configuration problems with IMAP e-mail on iOS with a non-standard SSL port.

http://colinrobbins.me/2013/02/09/configuration-problems-with-imap-e-mail-on-ios -with-a-non-standard-ssl-port/

Try this first - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)

Or this - Delete the account in Mail and then set it up again. Settings->Mail, Contacts, Calendars -> Accounts   Tap on the Account, then on the red button that says Remove Account.

 Cheers, Tom

I have the same issue and the email app just closes when I try to forward or send email.   This started after I updated to IOS 7.1.2.  Thanks for your help.