This is another trick that’s come into vogue lately. The thinking seems to be that writing "Re:" in the subject line of a first-touch email will fool buyers into thinking they have corresponded before. Even when this tactic worked, the subsequent realization that this was a first-touch sales email creates bad feelings between buyers and salespeople. And by now, this technique is so ubiquitous that buyers see through it immediately.
Nothing makes your message look like an email blast than "marketing speak" like "free," "consultation," "promotion," and so on. Try to use simple, straightforward language (like you're talking to a coworker) to avoid an instant delete.
Is it actually urgent? Unless the buyer's house is on fire, and you sell water, steer clear of this term. Not only will you provoke your recipient's ire when they realize you're asking for a phone call to "discuss their business goals," you'll also lose the ability to use this phrase when you actually mean it (it's 6:40 p.m. on a Friday, the big discount you're offering expires that night, their corporate credit card isn't going through, and you need to catch them before they sign off for the weekend.
Keeping your subject lines free of these words will have a noticeable impact on your open and response rates. Yes, it's hard to craft a great subject line -- but it's worth it.
CEO COMLife - Circles of Online Marketers