Using a keyboard shortcut to paste text
To paste a single string into a textfield
install both
xdotool
andxclip
:sudo apt-get install xdotool xclip
Add the following command to a shortcut key:
/bin/bash -c "sleep 0.5 && printf '[email protected]' | xclip -selection clipboard && xdotool key Control_L+v"
Choose: System Settings > "Keyboard" > "Shortcuts" > "Custom Shortcuts". Click the "+" and add the command above to a key combination of your choice.
Now when enter the cursor in a textfield and choose your shortcut, it will type your email address.