Well that is strange.....I've moved your thread to our Help Section where more members will view your question.
Could you please let us know who your email provider is and whether or not you have an IMAP or Pop account. Had you just set this account up or made any changes? It's just good to have all the info to hand to better be able to help you.
The IPad Forum is a community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the Ipad. There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions you have. If then you cannot find the answer you are seeking then by all means post your question. There are many friendly and informed members here only too willing to help you.