@tuicemen, good questions. You can link 1 Google account AND 1 Amazon account simultaneously to 1 TRIGGERcmd account. Yes, if you use 2 Amazon accounts you'll need 2 TRIGGERcmd accounts.

I know this is an old post but I have found that using IFTTT to trigger the command doesn't give the "here's trigger cmd etc." Hope this helps!

@russ Thanks I'm away for a week or more, I'll have a crack when I get back.