Lesss notifications for saving battery life

Most of the time when I receive an online message from a friend, I will get it on at least 2 platforms(because they want to make sure I get the message) and also on 2 devices. Let me explain.
When my friend sends a video that he discoverd recently, he sends me the link via facebook and via whatsapp. Also, I receive skype calls both on my mobile phone and laptop at the same time.

I was thinking on creating an app that have access to all my contacts,, checks my activity on different platforms and redirects a incoming message to the only platform I am currently using or to a default platform that I can chose. This way I would get less notifications on my phone, si I would save my battery life. And less unread messages! Who likes to have unread messages?

If you have any suggestions please fell free to write it down.