I searched and I can't find an answer--sorry if it has been posted before. Will my Nextel 7520 work in Ireland? I'm pretty sure my telephone service won't, but will I still be able to receive and send e-mails through Webclient?

No. Nextel is very, very limited outside of North America, and not in Europe or the UK at all.

And if you can't get voice, there is no way you can get e-mail.

I think the iDEN network is a 900MHz only North American band. outside of the US you may be out of luck for voice and data, but see the following looks promising: http://www.nextel.com/services/world...try_list.shtml