If I leave a comment on a JIRA issue, pasting the captured image to the comment or linking the attachment will upload it to JIRA's list of attachments, even if I didn't confirm the comment. In the meantime, the notification mail is sent or added to the list of attachments, so all the events that occur during editing are sent to the notification mail, so there are too many notifications.
The same thing happens when I change the font color or file.