Struct FileMailer 

pub struct FileMailer { /* private fields */ }

Development / debug mailer — writes each outgoing email to a timestamped .eml file in a configured directory instead of sending it.

Mirrors Django’s django.core.mail.backends.filebased.EmailBackend (issue #417). Useful when you want to inspect rendered email content (password-reset links, signup confirmations) during development without wiring an SMTP relay or piping stdout into a log file.

File names are YYYYMMDDHHMMSS-<seq>.eml so a burst of emails inside the same second still get unique paths. The directory is created on send if it doesn’t yet exist.

Implementations

impl FileMailer

pub fn new(dir: impl Into<PathBuf>) -> Self

Build a mailer that writes .eml files into dir. The directory is auto-created on the first send call.

pub fn dir(&self) -> &Path

The directory .eml files are written into.

Trait Implementations

impl Mailer for FileMailer

fn send<'life0, 'life1, 'async_trait>( &'life0 self, email: &'life1 Email, ) -> Pin<Box<dyn Future<Output = Result<(), MailError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Send email. Implementations should validate before transmitting (the helper Email::validate is the canonical check).