1.) Herzlich willkommen bei der Mustermann GmbH. Leider ist das Büro derzeit nicht besetzt oder Sie rufen ausserhalb der Geschäftszeiten an. Sie können aber gerne eine Nachricht hinterlassen, oder eine Email an [email protected] schreiben. Vielen Dank für Ihren Anruf.
The most engaging messages are slightly unique in nature. They combine a mix of clever scripting and music. Slight humour is often used to promote a product or service and is usually quite effective. It's also very important to choose both the written and spoken tone that appeals to the characteristics of your audience. If your target market is the younger generation, a script that includes slang words and is quite laid back would be an excellent choice. If your target market is primarily business professionals, then a more articulate choice of words would be more suitable.

"This is not an answering machine - this is a telepathic thought recording device. After the tone, think about your name, your reason for calling, and a number where I can reach you, and I'll think about returning your call."
What you do not want to do is say your phone number so quickly that the person has to listen to your voicemail multiple times to try and figure out your phone number. We have all gotten those annoying voicemail messages where the person said their phone number so quickly that we had to listen to their message several times to figure out their phone number. Don't be that jerk who leaves their phone number so fast that the other person has to listen to your message over and over to try and figure out what your phone number is.