Compare these two methods from com.atlassian.confluence.plugins.mentions.ConfluenceMentionsEventListener :

@EventListener
    public void commentCreated(final CommentCreateEvent event) {
    sendNotificationsForNewContent(event.getComment());
    }

@EventListener
    public void pageCreated(final PageCreateEvent event) {
    if (event.isSuppressNotifications() && event.getUpdateTrigger() == PageUpdateTrigger.LINK_REFACTORING) {
    return;
    }
    sendNotificationsForNewContent(event.getPage());
    }

The PageCreateEvent listener at least somewhat honors the suppressNotification parameter. The CommentCreateEvent listener does not.

As plugin developers, we'd like to be able to suppress @mention events for bulk operations on pages & comments.

Per product developers:

The event listener in confluence-mentions-plugin indeed is not looking at those properties for comment events (it should)

As directed in https://ecosystem.atlassian.net/servicedesk/customer/portal/14/DEVHELP-4919, I'm raising this suggestion here. Hopefully I got the right project & issue type!