Ask the people involved if they're okay with "user at host dot com" obfuscation. That's used in a few places already (e.g. PEP 0).
On 8/20/07, firstname.lastname@example.org email@example.com wrote:
Is there a policy about putting email addresses in PEPs? I have the names and email addresses of a couple platform maintainers to add to PEP 11. Having the email addresses there would make it handy to contact said maintainers, but I realize people don't always appreciate the extra exposure to spammers.