Struct Email 

pub struct Email {

    pub id: Uuid,
    pub user_id: Option<Uuid>,
    pub to: String,
    pub subject: Option<String>,
    pub body: Option<Value>,
    pub template_type: Option<EmailTemplateType>,
    pub language: Option<String>,
    pub placeholders: Option<Value>,
    pub is_test: bool,
    pub retry_count: i32,
    pub next_retry_at: Option<DateTime<Utc>>,
    pub retryable: bool,
    pub first_failed_at: Option<DateTime<Utc>>,
    pub last_attempt_at: Option<DateTime<Utc>>,
}

Fields

id: Uuid

user_id: Option<Uuid>

None when the mail goes to a raw address with no account here; substitutions must cope.

to: String

subject: Option<String>

body: Option<Value>

template_type: Option<EmailTemplateType>

language: Option<String>

The template’s language, else its course’s; None for a global template without one.

placeholders: Option<Value>

Substitutions carried on the delivery row, so a mail to a raw address needs no user lookup.

is_test: bool

A test send from the email editor: subject and body are its snapshot rather than the saved template, and every substitution comes from placeholders.

retry_count: i32

Number of failed send attempts recorded so far.

next_retry_at: Option<DateTime<Utc>>

retryable: bool

first_failed_at: Option<DateTime<Utc>>

last_attempt_at: Option<DateTime<Utc>>