But a mailto: link should pop up your default mail client - which does know your friends email addresses:
mailto:?subject=cool%20link&body=Here%20is%20a%20cool%20link%20to%20http://example.com
i.e. it should do exactly this if set up correctly.
So - is this really just that most clients don't have mailto: configured to launch the application which knows the email addresses of their friends?
But a mailto: link should pop up your default mail client - which does know your friends email addresses:
mailto:?subject=cool%20link&body=Here%20is%20a%20cool%20link%20to%20http://example.com
i.e. it should do exactly this if set up correctly.
So - is this really just that most clients don't have mailto: configured to launch the application which knows the email addresses of their friends?