In previous blogs, I’ve mentioned the importance of making a good first impression on a potential client. Most of the time, the first contact will be over the telephone. Since we are often in session, it is very likely that the first time a client hears our voice is on our voicemail greeting. This is why a professional greeting is so important. Identify yourself because you need to reassure the client that they have called the correct number. Clients will be a lot less likely to leave a message if they wonder who will get it. Use a warm friendly voice to say something like, “You have reached xxxx, licensed mental health counselor.” Tell clients what to do if they are in crisis. Although it seems obvious to us, clients may not realize that it could be several hours until we can return their call. I suggest something like, “If you require immediate assistance, please dial 911 or go to your nearest emergency room.” Ask for what information you need. Yes, the obvious name and number, but if it would be helpful to get their insurance information, ask for that, too. Give clients an idea about when you’ll return their call. Common business practice is within 24 business hours. Any extra messages or information you’d like clients to know. For example, if you are no longer accepting a particular insurance plan, the end of your voicemail greeting is a great place to convey that information.
Not all carriers support Visual Voicemail, but most major ones do. Visual Voicemail will work automatically as long as you’ve set up regular voicemail on your iPhone. Tap the Phone app icon to open it.In the bottom toolbar of the Phone app, tap the Voicemail icon.On the voicemail screen, you’ll see a list of all the voicemails people have left you. Tap any voicemail on the list.When you tap a voicemail on the list, it will expand to show a set of controls as well as the iOS transcription of the voicemail. If you want to read the transcription without hearing the voicemail, you can do that right here. Alternately, you can tap the play button to hear the voicemail. Save And Share Voicemails

While this information can be tucked behind a phone menu option, it's best to state it upfront in your after hours recording. This way, callers can decide whether to call back at a better time, or leave a voicemail message.
Generally, people that call and leave messages are more likely to be ideal customers of your business. Your voicemail message is often not much more than a formality to the person calling. Your message is a period of time that they are forced to wait through in order to do what they called to do in the first place — relay information to you.