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Emile (& Images)

Emile is a library to parse an e-mail address in OCaml. This project is an extraction of mrmime.

This implementation follow some RFCs:

• RFC 822
• RFC 2822
• RFC 5321 (domain part)
• RFC 5322
• RFC 6532

We handle UTF-8 (RFC 6532), domain defined on the SMTP protocol (RFC 5321), and general e-mail address purpose (RFC 822, RFC 2822, RFC 5322) without folding-whitespace.

Folding whitespace

According RFC 822, an e-mail address into an e-mail can be splitted by a folding-whitespace. However, this kind of form is not an usual case where user mostly wants to parse input from a form (for example). At the end, emile is not able to parse this kind of input:

A Group(Some people)
   :Chris Jones <c@(Chris's host.)public.example>,
     joe@example.org,
 John <jdoe@one.test> (my dear friend); (the end of the group)"

However, a pre-process (like unstrctrd) can fold input and give you an usual output. emile can not be used into an e-mail context without this kind of pre-process.

Domain

Then, for domain part (explained on RFC 5321 - SMTP protocol), we handle this kind of domain (IPv4 and IPv6 domain) with ipaddr:

first.last@[12.34.56.78]
first.last@[IPv6:1111:2222:3333::4444:12.34.56.78]

It's possible to notify multiple domains for one local-part like this:

<@a.com,b.com:john@doe.com>

It's a valid form according RFC 882.

Comments

Even if we don't handle the folding-whitespace, we are able to discard comments.

a(a(b(c)d(e(f))g)h(i)j)@iana.org

Advise

If you think it's easy to parse an e-mail address, you should look tests.