Every time I log on to my webmail I see a bar like on image below. I don't want to add this as an application and it is pretty annoying to close this every time. How can I disable it permanently?
The bar says:
Add o2 Poczta (poczta.o2.pl) as an application for mailto links? [Add Application] x
Image: https://i.sstatic.net/itY4O.jpg
I tried to use Firebug to see what causes this bar to appear but with no luck. Anyone help?
I think there might me something on server side that makes Firefox behave in this way.
How did they do that?
url to webmail is http://poczta.o2.pl
This is done by registering a protocol handler. From that page:
navigator.registerProtocolHandler("mailto",
"https://www.example.com/?uri=%s",
"Example Mail");
The site would just have to run a similar snippet at an appropriate moment(login, in your case).