Freshdesk's features match the ones offered by the other best virtual phone number providers on our list. However, it is the only provider of robust call center features like a multi-level interactive voice response system that routes your customer calls to teams or agents with a customizable call-flow mechanism. You can configure the system any way you wish – callers could press 1 for Customer Support, 2 for Sales and 3 for another department unique to your company.
Speaking slowly also gives the listener on the line the opportunity to write down your message. Remember that people write slower than they talk. If you don’t speak clearly and slowly enough, your target listeners won’t be able to catch up, or they may even write the wrong information, making your message ineffective.

American Voicemail offers a wide range of voicemail features, but also includes fax receiving and fax-to-email as well as a virtual phone system to manage your company’s telephone presence. Has some unusual features, such as a service that lets you send and receive text messages on landlines. Packages start at $8.95 a month, flat rate, with no per minute charges. No free trial but advertises “first month free.” Feature We Like: Automated Question and Answer Voicemail. This feature, which costs additional, asks your callers questions, one at a time, and records their answers. Great for taking surveys or phone orders.
Website: https://startup.unitelvoice.com/professional-business-voicemail-greetings