This week I almost recommended a consultant. One of my clients had asked me to recommend someone who taught a particular subject, and I was ready to recommend Rita (not her real name).
But when I tried to track down Rita's contact information to give to my client, I couldn't find anything but a gmail address. An email Rita had sent me recently did not include her phone number, website URL, or any other contact information.
Rather than give my client Rita's name and gmail address with no other way to contact her or check her out, I recommended another consultant.
Sorry, Rita! I would be glad to recommend you. But I need some help to do it: your phone number, your website URL, and an email address that makes you seem professional. Since I didn't have any of those, I recommended someone else.
Here's the moral of the story: If you want work, share your contact information. Put it on everything. Include it on every message.