Method HandleContentKey

internal/tui/mail.go:187–205

(msg tea.KeyPressMsg)

type postingActionEffect int

const (
	postingActionNone postingActionEffect = iota
	postingActionRemove
	postingActionSeen
	postingActionUnseen
	postingActionIgnore
	postingActionStopIgnoring
)

type postingActionDoneMsg struct {
	action     string
	boxID      int64
	sourceKind mail.Kind
	postingID  int64
	effect     postingActionEffect
	seen       bool // the action was taken on the Previously Seen screen
	err        error
}

// postingSeenMsg reports the mark-seen that opening a thread triggers on its
// own, as the web app does out of band once it has rendered the topic.
type postingSeenMsg struct {