People have short attention spans these days, and you should always craft your communications for the lowest common denominator with something as universal as your voicemail.
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2. Keep your landline just for work. Since I've had a contract mobile phone with squillions of minutes included, I very rarely use my landline anymore so it's become my business phone.
Users often don’t invest enough time into their messages, resulting in incomplete, unprofessional, or otherwise under-whelming greetings. Sure, crafting a greeting doesn’t sound all that complicated; however, there are a number of pitfalls users can fall into—i.e. informality, terseness, sincerity, lack of direction, and more. While none of these sound too catastrophic, they are often interrelated. As such, they tend to worsen any problem. For example, humor can cause informality, worsen ambiguity, and weaken sincerity. That being said, users should strive to avoid ALL these pitfalls.