Serious members of the media will gladly point you to the sales department if you pitch them what seems more like an ad than a story. Journalists are not your customers, but the company logo was sometimes the first thing I saw at the top of a news release.
I realize your number one motive in persuading a journalist to cover your company often is the hope of bettering the bottom line. But most journalists will back away if they sense you are making them an indirect extension of the sales team. You must dress up your true desires in a newsworthy idea and slapping the logo up top sends the wrong message. Your email should look like an email, not a digital brochure that silently shouts “sales!” Journalists or influential bloggers won’t shout back. But they might give you the silent treatment.