Feature Request: Setting message expiration

message.go

@@ -285,3 +285,25 @@ func (c *Client) GetGroupedMessageCount(ctx context.Context) ([]MessageGroupCoun
 
 	return res.Counts, nil
 }
+
+func (c *Client) SetExpirationTimeOnMessage(ctx context.Context, messageID string, expirationTime *int64) error {
+	return c.SetExpirationTimeOnMessages(ctx, []string{messageID}, expirationTime)
+}
+
+func (c *Client) SetExpirationTimeOnMessages(ctx context.Context, messageIDs []string, expirationTime *int64) error {
+	if err := c.do(ctx, func(r *resty.Request) (*resty.Response, error) {
+		return r.SetBody(MessageExpireActionReq{ExpirationTime: expirationTime, IDs: messageIDs}).Put("/mail/v4/messages/expire")
+	}); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *Client) RemoveExpirationTime(ctx context.Context, messageID string) error {
+	return c.SetExpirationTimeOnMessage(ctx, messageID, nil)
+}
+
+func (c *Client) RemoveExpirationTimeFromMessages(ctx context.Context, messageIDs []string) error {
+	return c.SetExpirationTimeOnMessages(ctx, messageIDs, nil)
+}

message_types.go

@@ -24,13 +24,14 @@ type MessageMetadata struct {
 	BCCList  []*mail.Address
 	ReplyTos []*mail.Address
 
-	Flags        MessageFlag
-	Time         int64
-	Size         int
-	Unread       Bool
-	IsReplied    Bool
-	IsRepliedAll Bool
-	IsForwarded  Bool
+	Flags          MessageFlag
+	Time           int64
+	ExpirationTime *int64
+	Size           int
+	Unread         Bool
+	IsReplied      Bool
+	IsRepliedAll   Bool
+	IsForwarded    Bool
 
 	NumAttachments int
 }
@@ -70,6 +71,11 @@ type Message struct {
 
 type MessageFlag int64
 
+type MessageExpireActionReq struct {
+	IDs            []string
+	ExpirationTime *int64
+}
+
 const (
 	MessageFlagReceived    MessageFlag = 1 << 0
 	MessageFlagSent        MessageFlag = 1 << 1