AI Voicemail Assistants that Double Your Follow-Ups
Boost response speed and simplify your workflow by turning every missed call into a clean, structured email with transcript, summary, and action items— automatically.
Trusted by 3K+ companies around the world
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1–2 min
From voicemail to inbox
End-to-end processing per message—detect, transcribe, summarize, and deliver a formatted email without human effort.
100%
Messages reviewed
Every recording becomes a searchable email with caller details and transcript so nothing gets lost, skipped, or forgotten.
10–15 hrs/mo
Team time saved
Replace manual listening and typing with automated summaries, standardized templates, and instant routing to the right inbox.
Every Missed Message Costs Money
Answer every inquiry 24/7/365 with automated transcription and summaries your team can act on immediately.
Problem:
Missed calls, delayed callbacks, scattered notes, manual typing, inconsistent email formats.
Overwhelmed by repetitive messages?
Want clearer, faster handoffs?
Struggling with high message volume?
Distracted from important tasks?
Looking for a reliable, always-on process?
Solution:
24/7 availability, instant transcripts, standardized summaries, automatic routing, zero lost voicemails.
Automate voicemail with AI Assistants
Generate more timely callbacks & happier clients
Convert more opportunities into scheduled work
Allocate your time to what matters most
Automatically triage & never miss a message
How we will transform your business
Our principles shape every decision we make. They reflect who we are and how we aim to make a meaningful difference.
Emails on Autopilot
AI detects new voicemails, transcribes the audio, and sends a branded email with caller info, transcript, and next steps—so your team simply replies or calls back.
Support That Feels Human
Clear summaries with who/what/why/when, extracted numbers and names, and suggested actions that reduce back-and-forth and improve customer experience.
Custom Workflows
Have specific routing rules or compliance needs? We build a flow tailored to your tools and policies so it fits perfectly into your operations.
How we helped others succeed
LSW Steuerberatung
High voicemail volume during tax season slowed callbacks and created inconsistent notes. What we built: An n8n flow that ingests Starface voicemail emails, transcribes audio with Whisper, summarizes via GPT-5, and delivers a formatted email to the shared inbox with caller details, full transcript, and clear action items.
Same-day callbacks: >95%
Processing time per message: ~1–2 min
Admin time saved: ≈12 hrs/month
Why it worked: Standardized email layout + instant summaries removed manual typing and made triage effortless.
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Autohaus König
Service advisors received long voicemails with phone numbers and VINs that were easy to miss, leading to slow follow-ups. What we built: Automated transcription and data extraction (name, number, VIN, intent) with smart routing to the service inbox, plus urgent-keyword alerts in Teams.
Faster responses: −36% time to first reply
Zero lost messages thanks to searchable transcripts
Fewer errors in work orders from accurate data capture
Why it worked: Clean, consistent emails with extracted fields let advisors act immediately and reduced re-work.
Try it for yourself
To receive a demo call
Getting started is simple
A simple, 3 step process, to make your life easier
1 Discovery & Strategy
We’ll identify your goals, analyze how voicemails arrive, and map the quickest win so the flow matches your current process.
2 Creation & Launch
We’ll build, test, and integrate the automation that seamlessly connects with your email, notifications, and routing rules.
3 Optimize
We’ll monitor, adjust, and improve prompts and templates based on real-world data so results stay consistently high.
Real Stories from Real Users
Hear how Custo has helped businesses close more deals, collaborate better, and stay organized.
Frequently Asked Questions
Find quick answers to common questions about Custo.
Ready to automate your Business?
Book a Demo (35+booked this month)