A professional voicemail greeting is a recording that informs clients and business partners you are not available to receive their call. It is an essential part of any effective business communication strategy, especially if you are in sales.
Consider for a moment how your phone is currently being answered. Professional courtesy is quite often not the standard for many college students. An abrupt "Yeah!" could be listed among the more courteous greetings. The more outrageous remarks will often buy you a major black mark in the professionalism category—even if it was your roommate answering your phone and acting crazy. A simple "This is ____" is always a pleasant change for a college student call. Make the change today, before the next (or first) employer phone call. If you have a landline, you should also encourage your roommate to do the same.

If you are going to use your own phone to record your greeting, be sure to use a land line. Cell phones can’t always be trusted to produce a high quality sound and often the callers will hear distortion, static, or flight information in the background because you decided to record a new message while waiting for your plane at the airport. Always use a land line in a quiet setting to make your recording.
If you’re working remotely now, but your mobile number isn’t on your business cards, add your mobile number to your business line’s voicemail message! If you’re worried that people will start calling your cellphone at all hours of the night – they won’t. They’ll treat it just with just as much respect as your business line.