email-message-wire

RFC822 and MIME parsing/rendering for email-message.

Scope contract

Parses RFC822 messages into the typed email_message::Message model.
Renders typed messages back into RFC822/MIME wire format.
Handles MIME structure, attachment encoding, RFC2047 encoded words, and related transport-safe formatting rules.

render_rfc822 strips Bcc by default so structured messages can be safely rendered for SMTP or raw delivery.
render_rfc822_with and RenderOptions are available when a caller intentionally needs a non-default wire rendering policy, such as including Bcc.
MIME attachments are base64-encoded and wrapped to RFC-compliant line lengths.
Typed Date and Message-ID values round-trip through the public Message API.
Attachment references must be resolved to bytes before rendering.

Run tests: cargo test -p email-message-wire
Check wasm compatibility: cargo check -p email-message-wire --target wasm32-unknown-unknown