mailhost

type MailboxUpdate struct {
	Password *string
	QuotaMB  *int
	Aliases  *[]string // local parts on the mailbox's domain
	DomainID string    // needed with Aliases
}

type Server interface {
	CreateDomain(ctx context.Context, name string) (id string, err error)
	// DeleteDomain removes the domain with its DKIM keys (mailboxes must be deleted first).
	DeleteDomain(ctx context.Context, id string) error
	// DomainRecords are the DNS records the domain needs (MX, SPF, DKIM, DMARC, SRV, ...).
	DomainRecords(ctx context.Context, id string) ([]dns.RRSet, error)
	CreateMailbox(ctx context.Context, domainID, local, password string, quotaMB int, aliases []string) (id string, err error)
	UpdateMailbox(ctx context.Context, id string, u MailboxUpdate) error
	DeleteMailbox(ctx context.Context, id string) error
	// Usage returns the used storage (bytes) per mailbox ID.
	Usage(ctx context.Context, ids []string) (map[string]int64, error)
}

type Settings struct {
	URL          string `json:"url"` // Stalwart HTTP endpoint; empty = email hosting off
	Username     string `json:"username"`
	Password     string `json:"password"`
	IMAPHost     string `json:"imap_host"` // shown to customers, e.g. mail.example.com
	SMTPHost     string `json:"smtp_host"`
	WebmailURL   string `json:"webmail_url"`
	MaxMailboxes int    `json:"max_mailboxes"` // default per new domain
	MaxQuotaMB   int    `json:"max_quota_mb"`  // default per mailbox
}

type Stalwart struct {
	URL      string // e.g. https://mail.example.com (the HTTP listener with /jmap)
	Username string // an administrator, e.g. admin@example.com
	Password string
	Client   *http.Client
}