Techically you’re right, Sojourner, at least according to the rules we both learned while growing up, several millennia ago. :wink:

But in practice, I think you’ll find that it’s become common and acceptable to retain “a” rather than change it to “an” if the following word starts with a long vowel, as does “email”.

(Edit) Actually this is more true in spoken than written English – and in such cases you’ll usually note the “a” is changed in pronunciation to a long vowel too.