I am always happy to pass along your professional contact information when I post about a project opportunity in private Facebook groups for editors or via profession-related email discussion lists. [Please note that this post is not a request for you to send me such information right now.]
I worry about those of you who don't have links to places online where potential clients can find out all about you. I'm talking about a business website, LinkedIn profile, some other professional profile, or even a business-related blog. You don't need all of those items; most times, just one of them is enough.
Because potential clients don't want to be overwhelmed by lots of email attachments, I don't pass along your résumé or curriculum vitae. In fact, lots of corporate email systems automatically strip out email attachments. Thus, if you haven't provided links to any sites where people can learn about you, then giving just your name, phone number, and email address isn't going to get you many responses from potential clients.
Even if you can't afford to maintain a business website, please, please at least set up a free profile for yourself at LinkedIn or some other respected website. For example, editorial associations often allow their members to set up a personalized listing in the societies' online directories. Please take advantage of that service. It doesn't take much time to put together a profile, and it will help clients find you.