LNCS style and proper handling of e-mails

Question

When defining title in LNCS styled paper, one defined author list and links it to the institute list -- yet only one \email clause can be made per institute. Now, the docs are seemingly silent about the situation when there are few authors from one institute that want to have their e-mails visible.
When looking at papers made with llncs, this is usually handled with curly bracket, like this

{J.Smith,J.Doe}@someinst.something

Now the question; I'm curious if there exist any more proper way of doing it on LaTeX level than just putting such string into \email?

Answer 1

Not sure if it is what you are looking for, but for a recent llncs-based paper I used something like

\usepackage{url}
\urldef{\mailsa}\path|author1@someinst.something|
\urldef{\mailsb}\path|author2@someotherinst.something|

in the preamble, and after the mainmatter, the institute commands reads

\institute{affiliation goes here\\ \mailsa\\ \mailsb}

Answer 2

I happily use \email{my.self,my.boss@university.edu} here. Afaik, this is the default, although I've seen \email{my.self | my.boss@university.edu} as well.