Currently it is only possible to paste through middle button.
It would be nice is iTerm.app could be configurable in respect to mouse paste operations.
This would make it easier to adopt for putty users where pasting by default is applied through the right mouse button.
And since all features of the right-click context menu is available through the menus there seem to be no problem in overloading this functionality - if the user wants this.
Many xterms implement copy-on-select and paste on right-click so it's an old habit of convenience many of us have developed. I'm sure other people like the context menu on right-click, but it's only useful to me for accessing the paste option, which is comparatively slow vs a simple right-click. Perhaps an option to swap the middle and right buttons would do the trick? Not that I HAVE a middle button, but that's OK with me. Other than this small thing, I have a strong preference for iTerm vs Terminal. Thanks for a great program.