email.connection_required: Action emits an email but the application names no email connection

Action emits an email but the application names no email connection.

Area 16, Built-in services; not declinable; the next step is usually the agent's.

An email is sent through the connection application { email: } names, once the action that emits it commits, so emitting one needs it:

example

use accounts/types { DisplayName }use accounts/emails { WelcomeEmail }/// Welcomes someone who has just signed up.action welcome(address: Email, name: DisplayName) -> Unit {    emit WelcomeEmail {        to: address        locale: Locale.en_gb        name: name    }}

jadpo checkcheck failed: 1 error, 5 files

error WelcomeEmail is emitted, but nothing sends email

--> domains/accounts/actions/welcome.jadpo:6:5

  |6 |     emit WelcomeEmail {  |     ^^^^^^^^^^^^^^^^^^^ no email connection

reason: An email is sent once the action that emits it commits, through the connection application { email: } names, from the address its from: gives; app.jadpo names none.
next: Declare a connection with driver: Driver.smtp in connections:, and add email: { connection: <its name> from: config.mail_sender } to application { } in app.jadpo (agent)
rule: email.connection_required
help: https://jadpo.dev/docs/errors/email.connection_required