brevo.updateEmailTemplate patches fields on an existing template.
Example
Inputs
ProvidetemplateId: number | string. Optional fields are templateName, subject, registered sender, an htmlContent value of at least 11 characters, public htmlUrl, attachmentUrl, isActive, replyTo, tag, and toField. Second argument { account } selects the Brevo binding.
Output
ReturnsSignal<void> after Brevo accepts the update. Use brevo.getEmailTemplate to retrieve Brevo’s resulting content. Don’t supply both HTML sources in one patch.