With Romulus you can configure voicemail directly within the inbound rules of your number. When a call reaches voicemail, the caller hears a message and can leave a voice message — which you will receive as a notification in the dashboard.
This guide starts with the most common scenario: voicemail as an automatic fallback when no one answers.
💡 If you are not yet familiar with the rules system, read How Inbound Rules Work first. For a description of each block, see The Available Blocks in Inbound Rules.
Scenario 1 (most common) — Voicemail as automatic fallback
The customer calls, the team's phone rings, but no one answers. After a set number of seconds, the call automatically goes to voicemail.
From the side menu, click Phone Numbers.
Click on the number you want to configure.
Go to the Inbound Rules tab.
Create a new rule or edit an existing one.
In the flow, add the Call user or Call group block as the first block.
Below the call block, click + Select step and select Voicemail.
Configure the voicemail block:
Welcome message — the text or audio the caller hears before leaving a message (e.g. "We are not available right now. Please leave a message and we will get back to you as soon as possible.")
Notification recipients — choose which users receive a notification when a new voicemail message arrives
Click Save changes.
From this point on, if no one answers within the configured time, the call automatically goes to voicemail.
Scenario 2 — Voicemail always active
Useful for numbers dedicated exclusively to collecting messages — for example, a post-sales support line or a secondary number.
Follow the same steps as Scenario 1, but at step 5 add the Voicemail block directly as the first and only block in the flow, without adding a call block first.
In this case, all incoming calls go directly to voicemail without ringing anyone on the team.
Scenario 3 — Voicemail outside business hours
Want the team to answer during business hours and calls to go to voicemail outside those hours? Set up two separate rules:
Business hours rule — with the Call user or Call group block
Out-of-hours rule — with the Voicemail block (optionally preceded by an audio message)
For full details on how to configure schedules, see How to Set Up Business Hours and an Out-of-Hours Message.
How to Listen to Voicemail Messages
Voice messages are accessible directly from the Romulus dashboard, in the Call log section. Each message is linked to the corresponding call and can be played back directly from the platform. Users set as notification recipients also receive a notification each time a new message arrives.
Frequently Asked Questions
How long does it wait before sending the call to voicemail?
The wait time depends on the configuration of the call block that precedes voicemail. You can set it directly in the options of the Call user or Call group block.
Are voicemail messages also sent by email?
Yes. Users set as notification recipients receive a notification when a new voicemail message arrives.
Can I play an audio message before voicemail?
Yes. Add the Play audio block before the voicemail block in the flow. The caller will first hear the message (e.g. "We are closed") and then be able to leave their voicemail.
Can I disable voicemail during certain hours?
Yes. Voicemail is part of a rule, so it is only active during the time slots you have set for that rule. You can create different rules for different hours.