email-message-wire

RFC822 and MIME parsing and rendering for email-message.

This crate has no optional feature flags.

Quick Start

use email_message_wire::{parse_rfc822, render_rfc822};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let raw = b"From: from@example.com\r\nTo: to@example.com\r\n\r\nHello";
    let message = parse_rfc822(raw)?;
    let rendered = render_rfc822(&message)?;

    assert!(!rendered.is_empty());
    Ok(())
}

Scope Contract

• Parses RFC822 messages into the typed email_message::Message model.
• Renders typed messages as RFC822 and MIME wire data.
• Handles MIME structure, attachment encoding, RFC2047 encoded words, and related transport-safe formatting.
• Enables email-message's mime feature because full MIME-tree rendering requires MimePart.

Key Behaviors

• render_rfc822 strips Bcc by default so messages are safe for SMTP or raw delivery.
• render_rfc822_with and RenderOptions allow intentional non-default policies such as retaining 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.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.