Module mail_queue 

What the two mail phases share: the template lookup, and the accounting of what one iteration queued and skipped.

Structs

MailQueueSummary 🔒

What one mail iteration claimed and could not queue. A mail with no template is skipped rather than failing the iteration: the batch is one transaction, so an error would roll back every mail that could be queued, and the claimed rows stay claimable.

TemplateCache 🔒

One template lookup per type and language per iteration rather than per mail. None means no template exists, which a mail phase reports rather than failing the batch it was found in.

Functions

template_language 🔒

Templates are stored per language and courses carry a locale. The course’s language, not the recipient’s: the linking mail’s recipient may have no account here, and an account records no UI language to prefer.