Dear Ville,

This is a simple demo on how this can be done.

I've set up the following wolfram language script and left it running in a raspberryPi.

CloudConnect["user@domain.com","password"]; 
db=Databin["databinID"];
count=db["EntryCount"]; 
latestCount=count;
While[
    FindFile["quit.txt"]==$Failed,  
    latestCount=db["EntryCount"];
    If[latestCount>count, SendMail["Record added in DataBin @"<>DateString@Now];
    count=latestCount;];
    Pause[10];]
    DeleteFile["quit.txt"]

You could use other methods to interrupt the process that we'll trigger in the raspberry Pi instead of checking for the file. Try out the new Channel-Comm to play with this.

From my computer I added a record in the databin

DatabinAdd[db, 666];

The script detected the increase in recordcount of the bin and send me a message back to my registered email address.