isUp.li: Version 2 will remove the support of Pushbullet
The support of Pushbullet will be removed with version 2.0 of isUp.li.
Some statistics: 46.7% of the active users have created a SLACK connection. 58.9% of all monitored servers / websites use status messages via e-mail. Pushbullet is currently used by 1.7% of all users, 100% of these users have activated SLACK and e-mail notifications.