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Voicemail is a voice message that a caller leaves when the person they are trying to call is absent or is busy with another conversation. You can think of voicemail as some kind of email but instead of keeping text messages sent from your contacts, they keep voice messages which could be exactly what you need when you are a very busy person.

Although some people think that voicemail is outdated and going out of style, it is still worth noting that it has some nice features that could easily change your mind about using it. For instance, not only can you record and play sounds back, but you can also:

  • Present different greetings to different users
  • Transfer and save voice messages to storage media like a hard drive, which can also be sent as an attachment with email messages.
  • Broadcast voice messages to send to more than one person at the same time.

These are just a few of what voicemails can do. So if you are interested in these features voicemails provide and are ready to set it up for your Optus prepaid sim card, then follow these steps below to get it up and running as quickly as possible. Let’s dive right into it.

Setting up Optus voicemail using My Optus App

You can set up your Optus voicemail using the My Optus App. If you do not yet have it and you want to set your voicemail in this way, you will need to download it from Google Play Store or the AppStore. You can also get it directly from the Optus Website Now, to set up your voicemail using the My Optus App follow these steps below:

  1. Open the My Optus App
  2. If you’re not already logged in, click the icon in the top left corner and enter your login details.
  3. On the bottom navigation of the app click the Service tab.
  4. Now after the Service tab opens a new page, click on Settings on the top right of the top navigation.
  5. Then you have to scroll till you see Voicemail and call diversions. Click on it to proceed to the next step.
  6. You can now select when you want to divert your calls to Voicemail
  7. Select Voicemail
  8. Refer to the Setting up and accessing your mailbox section below for the next steps.

Setting up Optus voicemail using your Optus Account

You can also set up your voicemail by directly going to Optus’ Website and logging in to you account. After successfully logging in to your Optus Account, follow these steps below:

  1. Select the service
  2. Then select the Settings tab
  3. Select Call Diversion
  4. Then select Your voicemail is on option and Save
  5. After this, refer to the Setting up and accessing your mailbox section below for the next steps.

Setting up Optus voicemail via Call

You can also call Optus directly to activate your voicemail by following the steps below:

  1. Dial 1509 from your mobile (free call)
  2. Select the Voicemail option
  3. Choose the Activate option
  4. Refer to the Setting up and accessing your mailbox section below for the next steps.

Setting up and accessing your mailbox

This step remains the same no matter the method you chose to go with.

Setting up your mailbox

Once your voicemail is active, you’ll be sent an SMS that includes a random default PIN. To set up your mailbox you have to :

  1. Dial 321 from your Mobile
  2. Record your greeting
  3. Change your PIN
  4. Complete the tutorial

Make sure you change the default PIN sent to you. Your PIN can be up to 9 digits long, as long as the numbers are non-sequential (e.g. 1234), and are not a series of repeated numbers (eg. 0000). If you need to reset your PIN, you can contact Optus.

Accessing your mailbox

To access your Voicemail messages, or modify your personal preferences:

  1. Dial 321 from your mobile
  2. Follow the prompts
    1. Press 8 to access user options
    2. Press 3 to change your greeting.


After following the above instructions, your Optus voicemail should now be up and running.


Note however, that once you have activated Voicemail, it will take 15 minutes to 4 hours for the changes to take effect. So please be patient.

If you also want to know how to remove your Optus voicemail, please check out our post on that. Thanks.

As always, remember that you can browse through other content below. Also, you can comment below if you have any questions or challenges, you can also suggest another method that works in the comment section below.

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