Struct Envelope 

#[non_exhaustive]
pub struct Envelope {
    pub mail_from: Address,
    pub rcpt_to: Vec<Address>,
    pub extra: Map<String, Value>,
}

SMTP envelope for an EmailSubmission (RFC 8621 §7).

Carries the return address and recipient list used in the SMTP dialogue. If omitted on creation the server derives it from the Email headers.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

mail_from: Address

Return address for the SMTP MAIL FROM command.

rcpt_to: Vec<Address>

Recipient addresses for SMTP RCPT TO commands.

extra: Map<String, Value>

Catch-all for vendor / site / private extension fields not covered by the typed fields above. Preserves unknown fields across deserialize/serialize round-trip per workspace extras-preservation policy (see workspace AGENTS.md).

Implementations

impl Envelope

pub fn new(mail_from: Address, rcpt_to: Vec<Address>) -> Self

Construct an Envelope from a return address and recipient list.

Trait Implementations

impl Clone for Envelope

fn clone(&self) -> Envelope

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Envelope

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Envelope

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Envelope

impl PartialEq for Envelope

fn eq(&self, other: &Envelope) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Envelope

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Envelope