Probably applies to your email sound like it uses the GMail processing:

GMail entire message content missing (blank) after header title

In Firefox, if you have "Adblock Plus" extension.

1. "Ctrl+Shift+F" Preferences (or right click on ADP symbol, and choose preferences)
2. 'Filters' menu > "Update all subscriptions"

reference: https://support.mozilla.com/questions/896267

Try the solition from here: https://support.mozilla.com/pl/questions/893645 by dmcritchie

Also try to search first for already asked questions.

I had the above fault with Google mail and updated 'adblock' as suggested, it appears to have fixed it!

to add the adblock fix worked for Google Mail, but not in Virgin Mail, I had to turn off Adblock completely, as the update did not work!

thanks

Also please don't forget to mark question as "solved" by selecting the answer that helped you.

So turning off ADP worked for Virgin mail, so you know you are close to a solution, see the additional comments(s) on how to check your Adblock filters in the link originally referenced or in the MozillaZine article itself. (both references are here)

• https://support.mozilla.com/questions/896267
• Adblock - MozillaZine Knowledge Base

If you come up with a solution for Virgin please indicate what it is.

I've just spent about 3 hours trying to resolve this issue with my ntlworld.com (part of Virgin Media) email addresses. The suggestion to update subcriptions didn't work for me nor did anything else suggested in other replies to similar questions in Firefox Help.

I got my email working again by changing the subscription filter list I'm using in Adblock Plus. I added EasyList (English) to my filters list and disabled Fanboy's List (English). I then disabled Adblock, restarted Firefox, enabled Adblock, restarted Firefox again. Bingo. Email I can read without using another browser.

None of the suggestions worked for me but thanks to everyone for their efforts. I think I saw a suggestion to upgrade to Firefox 8 - I have done this and it has fixed the problem.

Adblock plus / Fanboy's List was causing the issue for me....

Open up Virgin mail - log in and open a message (should be blank message window at this point), so that Adblock recognises a hit.

Click Firefox tools / add-ons / extensions / Adblock plus & open Options.

Now with the Adblock's Preferences window open, ... click the top right - on the heading Hits, until it's arrow is pointing down (to give most hits at the top of the list).

You should see near the top (IF you loaded a Virgin mail message first!), a filter with a very long name, starting with ~t-mobile.co.uk, ~channel4.com, ~amusingplanet.com..... etc, etc.

Now, un-tick that filter (disabled) / Apply / OK, to close Adblock Plus Prefferences.

Go back to Virgin mail and reload or open a message, and it SHOULD be fixed. Was for me anyways  :O)

See Image attachment.