Enum MailError 

pub enum MailError {
    NotConfigured,
    Configuration(String),
    MissingField(&'static str),
    InvalidAddress(String),
    AttachmentError(String),
    AttachmentMissingContent(String),
    AttachmentFileNotFound(String),
    AttachmentReadError(String),
    BuildError(String),
    SendError(String),
    UnsupportedFeature(String),
    ProviderError {
        provider: &'static str,
        message: String,
        status: Option<u16>,
    },
    HttpError(String),
    JsonError(String),
    TemplateError(String),
    Internal(String),
}

Errors that can occur when sending emails.

Variants

NotConfigured

Email provider is not configured.

Configuration(String)

Configuration error (missing env var, invalid value, etc.)

MissingField(&'static str)

Missing required field (e.g., from address).

InvalidAddress(String)

Invalid email address format.

AttachmentError(String)

Error reading or processing attachment (generic).

AttachmentMissingContent(String)

Attachment has no content (neither data nor path provided).

AttachmentFileNotFound(String)

Attachment file not found.

AttachmentReadError(String)

Failed to read attachment file.

BuildError(String)

Error building the email message.

SendError(String)

Error sending the email.

UnsupportedFeature(String)

Unsupported feature for this adapter.

ProviderError

Provider-specific error with details.

Fields

provider: &'static str

message: String

status: Option<u16>

Optional HTTP status code

HttpError(String)

HTTP request failed.

JsonError(String)

JSON serialization/deserialization error.

TemplateError(String)

Template rendering error.

Internal(String)

Generic internal error.

Implementations

impl MailError

pub fn provider(provider: &'static str, message: impl Into<String>) -> Self

Create a provider-specific error.

pub fn provider_with_status( provider: &'static str, message: impl Into<String>, status: u16, ) -> Self

Create a provider error with HTTP status.

Trait Implementations

impl Clone for MailError

fn clone(&self) -> MailError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MailError

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

Formats the value using the given formatter.

impl Display for MailError

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

Formats the value using the given formatter.

impl Error for MailError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for MailError

fn from(err: Error) -> Self

Converts to this type from the input type.