Example, vapi ID: b567ae6d-9713-4130-b62d-185166225d92 Hi there! Whenever we make an outbound call that reaches someone's voicemail, it plays the

firstMessage

and then plays the voicemail

voicemailMessage

. How can we avoid to play the

firstMessage

in those scenarios (outbound call to a voicemail) and play only the

voicemailMessage

? Note that I'm using those parameters:

firstMessageInterruptionsEnabled:true
firstMessageMode:"assistant-waits-for-user"
beepMaxAwaitSeconds:0

with both a provided

firstMessage

and

voicemailMessage

, with

vapi

as

voicemailDetection

Thank you!

Hey! To help track down this issue, could you share: \- The call ID \- When exactly this happened (the timestamp) \- What response you expected to get \- What response you actually got instead This would really help us figure out what went wrong!

Call ID: b567ae6d-9713-4130-b62d-185166225d92 Both first message and voicemail are played, whereas only voicemail should be played since the outbound call reaches the voicemail.

Hey Adeb, thanks for sharing your details. Our team will look into it and get back to you soon with an update.

any update?

You will have to tweak the settings for the voicemail detection. We also suggest changing the firstMessage mode for the assistant like the example provided below:

{
  "firstMessageMode": "assistant-waits-for-user",
  "voicemailDetection": {
    "provider": "openai", // or "google" 
    "backoffPlan": {
      "startAtSeconds": 0,        // Start immediately
      "frequencySeconds": 2.5,    // Check every 2.5 seconds (minimum allowed)
      "maxRetries": 8             // More attempts for better coverage
    },
    "beepMaxAwaitSeconds": 15     // Reduced from 30 to 15 seconds
  },
  "voicemailMessage": "Your voicemail message here"
}