I've tried to figure out whether the format of an e-mail address can be said to comply with the definition of a URI or not, but I've found no explicit confirmation of this so far. I hope someone can provide me with some insight here. Thanks in advance :)
Yes, but with "mailto:" prefix.
A URI has this form:
<scheme>:<scheme-specific-part>
The <scheme>
is "mailto", the <scheme-specific-part>
is the address.
For example:
mailto:max@provider.com
is a valid URI.