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How to Measure the Success of a Bulk Voice Messaging Campaign
BULK SMS
16 May, 2025

How to Measure the Success of a Bulk Voice Messaging Campaign

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WAVE SMS
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In a world where customers are constantly bombarded with texts, emails, and social media ads Bulk Voice Messaging stands out as a great tool for that personal connection. For an election campaign, an emergency alert, a promotional offer, or a reminder call bulk voice messages break through the noise and get your message out there audibly.

Alsowe see that this is the first step in a campaign. To really make an impact and get return on your investment you must measure the success of your bulk voice messaging campaign. But what does success look like in this case? It is not enough to have sent out the message to many people. What you also have to look at is how many people heard it, got involved, and did what you wanted them to do.

Let us look at the main metrics and methods for evaluating your bulk voice messaging results.

 

1. Call Delivery Rate

The first sign of success is your delivery rate which is the number of intended recipients that in fact received the call. If you sent out 10,000 messages and 8,500 were successfully delivered your delivery rate is 85%.

A low delivery rate may be a sign of using invalid or out of date numbers in your contact list or of network issues. To improve this metric we recommend you to regularly update your contact database.

 

2. Call Duration and Listen Rate

Did your audience actually pay attention to the message?

Call duration is a crucial metric here.  If we have a 30 second message which most users drop off from after 5 seconds that may be that the message isn’t relevant or engaging enough. On the other hand, a high average listen time is a good indicator that your message went down well and held people’s attention.

Listen rate which is a great metric for you to use not only for technical delivery but also message quality.

 

3. Call Completion Rate

A complete call is when the full voice message has played for the recipient. This is particularly so for messages which include important info like OTPs, service updates or confirmations.

The Completion Ratio we see is of which percentage of your audience stayed on to hear the full message out. High ratios which we note indicate that what you are putting out is of interest, well put together, and useful to your audience.

 

4. Response or Action Rate

In the end what bulk voice messages do is to prompt action. This may be in the form of clicking on a link, pressing a key at which point in the call (DTMF response), replying by SMS, or going to a store or a website.

By incorporating your voice campaign with tracking tools such as short codes, USSD codes, or landing pages we are able to see exactly what people did in response to your message. This is the best indicator of campaign success.

 

5. Opt-Out Rate

A large scale of opt out by your audience which is which people are choosing to unsubscribe or to block your number is a warning sign. It may be a sign of poor target audience, irrelevant info in your messages, or you may be reaching out to them too often. By watching this out you can improve your future campaigns to see better results and to retain your audience.

 

6. Cost Efficiency

How much are you spending per action, per response to a query, or per completed call? We see cost per engagement as a great financial indicator of campaign success. If you have a low cost voice campaign that produces a large number of meaningful actions then that is a great return on investment.

Compare results across various segments or campaign types to see which has the greatest value for your budget.

 

7. Feedback and Surveys

At times the best data is collected from asking your audience directly. We include a brief survey at the end of the call, or follow up with an SMS or WhatsApp message for input which in turn gives us qualitative insight into the user experience.

This will help to improve future campaigns and create a better relationship with your target audience.

 

8. A/B Testing Results

Running different versions of your messages in A/B tests will help out. From that which performs the best you can then use to fine tune future voice strategies.

 

Bringing It All Together

Through the use of these metrics delivery rate, listen time, call in, response to outreach, drop off, also at which you spend and that which you get in return, customer feedback, and A/B testing you will have a full picture of how your campaign is doing.

Data based decisions will transform your future work which in turn will make your voice not just heard but also actuated.

 

Why WaveSMS is Your Go-To Partner for Voice Campaigns in Kenya

If you are ready to improve your business’ communication, WaveSMS has a full set of messaging solutions for your growth.

Whether you are with voice campaigns, of sending bulk SMS, or into interactive mobile experiences, WaveSMS brings to you the Best Bulk Voice Message in Kenya which we deliver with crystal clear quality, analytics, and customization.

Also we provide quality Bulk SMS Services in Kenya and are the go to for the Best WhatsApp Business API in Kenya which we use to help businesses out with automation and personalization across platforms.

Looking for more? We have for you our in depth Shortcode Services in Kenya, Best USSD Services in Kenya, and also our Great Ringback Tone Services in Kenya which we put in place for that perfect branded mobile experience.

At WaveSMS we provide you with a reliable, affordable and simple solution which allows you to focus on your message and let us take care of the rest.

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