AI Voice Agents for Lead Reactivation

Re-engage lost leads. telli’s AI voice agents reactivate cold, aged, or unresponsive leads automatically — sparking new conversations and booking meetings at scale.

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Automating call operations for

Benefits

Why telli?

Re-Engage Dormant Leads

telli activates the leads you’ve never had time to follow up on. Our AI voice agents plug into your CRM and instantly deliver personalized calls at scale, re-engaging dormant leads and uncovering new revenue.

Proactive outreach to dormant leads
Personalized conversations at scale
Consistent, timely follow-ups

Seamless Handoff to Your Team

When a lead is ready to return or needs a human touch, telli transfers the conversation to the right person with full context. Your team can pick up exactly where the AI left off, leading to higher conversion and smoother experiences.

Real-time routing to the right specialist
Full conversation summaries for your team
Frictionless AI-to-human call escalations

Sync Every Insight to Your CRM Automatically

telli updates customer profiles with every interaction: call logs, preferences, and reactivation readiness. Your team gets complete visibility without manual data entry, enabling smarter campaigns and more effective follow-ups.

Automatic CRM updates for every customer
Real-time data on reactivation likelihood
Insights to optimize win-back strategies

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Features

Everything you need to reactivate leads

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Multilingual AI Voice Agents

Deliver fluent, native-sounding conversations in over 40 languages, including English, German, French, Spanish, Dutch and Italian.

Verified Phone Numbers & SIP Trunk

Buy trusted, verified phone numbers for seamless outbound calling and higher answer rates. Or alternatively, bring your own phone numbers using SIP Trunk.

Call Transfer

Seamlessly hand off during inbound and outbound calls with warm transfers. telli connects AI-led conversations to the right human rep, checking availability and providing a brief summary of the previous conversation.

Appointment Booking

Let your AI handle scheduling from start to finish. telli’s voice agents connect directly to your CRMs and calendars, so appointments are booked instantly. No more back-and-forth emails or missed opportunities.

Branded Caller ID

Display your company name and logo on outbound calls to build trust and boost answer rates. Give every call a professional, recognizable touch from the first ring.

telli Studio

telli studio makes it easy to create, fine-tune, and improve how your AI voice agents respond. Use our AI-assisted chat or manually edit your call scripts

Auto Dialer

Run outbound call campaigns at scale with telli’s AI voice agents and smart calling strategies. When a lead doesn’t pick up, telli automatically retries at the optimal time ensuring maximum reachability and zero manual chasing.

Custom Workflows

Customize call workflows to match your unique customer journey. Instantly call new leads, schedule appointments, and automatically trigger callbacks.

Custom Tools

Extend your AI voice agents with Custom Tools. Connect to any API or data source to retrieve information, take action, and enhance every call.

Leave a Voicemail

Our AI voice agents automatically leave professional and personalized messages when a call goes to voicemail, so you never miss a lead.

Call Analysis

Analyze your calls at scale by tracking performance across thousands of calls, defining your own custom call outcomes and syncing outcomes back into your CRM.

Deployment

Up and Running in Days, Not Weeks.

Integrate in seconds, deploy in days. We’re there at every step to ensure your voice agents perform flawlessly from day one.

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Multilingual AI Agents

Sound Local. Everywhere.

Deliver fluent, native-sounding conversations over 40 languages, including English, German, French, Spanish, Dutch and Italian. Build trust with customers using local accents and natural tone. No translators, no extra staff.

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Customers

You’re in Great Company

5M+ calls automated

Drive higher inbound throughput with AI-optimized call handling

increase in monthly call volume

Convert more conversations into appointments with AI-guided scheduling

150

increase in booking rate

Offload routine intake calls to AI for cleaner, faster front-line operations

of information-gathering calls handled by a telli agent

Multiply call throughput using AI agents that operate without bottlenecks

completed call volume

Fill more technician calendars with AI-driven appointment scheduling

increase in weekly service appointments scheduled

Reach more customers on the first attempt with intelligent call sequencing

increase in connection rate

Convert more consultations into revenue with AI-guided follow-up and qualification

increase in CVR from consultation to sale

telli’s AI agents have expanded our outbound capacity further than we thought possible. We’re saving time, reaching more leads, and seeing a huge spike in follow-ups from potential customers.

Mareike Wiethölter

Head of Process Management

As a fast-growing AI-based company, we only work with the most cutting-edge solutions, and telli is just that. They help us dramatically scale lead response while giving our customers a high-quality experience.

Justus Kloth

Associate Director of Strategy

telli is leading the charge for call automation in Germany. They tailored their voice agents to our exact business needs, and the efficiency gains have been incredible.

Martin Fricke

Product Manager

telli is the most scalable and cost-efficient answer to call automation on the market. If you’re looking to ramp up sales without compromising on customer satisfaction, it’s a must.

Christoph Pirkl

CSO

We’ve been using telli for three months to book appointments with leads, and the results have been great. It’s surprisingly easy to use, and the AI agent consistently books appointments at the same rate or better than our internal call center.

Tommaso Piatti

Director Operations

telli delivers an incredibly human-like, scalable, and professional experience that's transformed how we handle customer calls. We're thrilled with both the product and the responsive, supportive team behind it.

Matthias Knoche

COO

telli brought our sales floor from chaos to calm. Our team now focuses on actually helping customers, not just reaching and scheduling them — and we haven’t missed a lead since.

Richard Ruben

Co-founder and CEO

Re-engage dormant leads at scale through intelligent outbound follow-ups

reactivation rate for outbound calls among reached leads

Eliminate long waits with near-instant AI call responses

faster call response time

Accelerate hiring steps with automated candidate progression

reduction in time spent advancing candidates

Resolve customer needs end-to-end through autonomous AI call handling

of calls fully resolved by telli agent

Streamline dispatch workflows with automated coordination and routing

time saved across the entire service dispatch organization

Expand service capacity without adding headcount through AI-powered operations

reduction in scaling costs

Lift overall performance by automating the highest-leverage steps in the workflow

increase in success rate

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Industries

Automate Call Operations for Every Industry

HVAC & Solar

Reach and qualify homeowners fast, then book on-site consultations automatically.

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Real Estate

Call and convert buyer and seller leads instantly so you can schedule viewings before competitors do.

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Financial Services

Follow up on inbound sign-ups instantly, pre-qualify prospects, and book advisor calls.

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Insurance

Proactively contact leads for quotes or renewals and convert them with instant AI follow-ups.

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Hiring & Recruitment

Engage candidates faster with automated outreach, screening calls, and interview scheduling.

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Consumer & B2C Brands

Connect with prospects, qualify interest, and book consultations or demos at scale.

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Telecom

Transform telecom with AI voice agents to deliver faster, smarter, and personalized customer experiences.

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Integrations

Plug and Play. No Heavy Lifting.

telli plugs directly into your CRM, calendars and customer systems, automatically capturing and updating data from every call. No manual entry. No extra steps.

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Simpify Call Operations

See What You’ll Save With telli.

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Security

Enterprise-Grade Protection by Default.

FAQ

Frequently Asked Questions

What are some customer reactivation strategies?

Customer reactivation strategies focus on re-engaging inactive customers through personalized outreach, updated offers, and timely follow-ups. With AI and telli, businesses can automate phone outreach, deliver tailored messages, and identify which customers are ready to return, boosting reactivation rates without adding manual work.

What are customer reactivation campaigns?

Customer reactivation campaigns are structured efforts to win back dormant customers using targeted communication, incentives, and personalized messaging. With telli’s AI-driven voice outreach, businesses can contact customers at scale, uncover reasons for inactivity, update profiles, and guide them back toward bookings, purchases, or renewed engagement automatically and efficiently.

How can AI be used for customer reactivation?

AI powers customer reactivation by identifying inactive customers and automating personalized outreach. telli’s AI voice agents call customers directly, gather key insights, deliver tailored messages, and seamlessly escalate to humans when needed, which allows businesses to re-engage customers at scale with minimal effort.

Can telli retrieve customer data in real time?

Yes. telli connects directly to your CRM and business systems to pull customer records the moment a call begins. It can access history, preferences, and account details instantly, enabling personalized conversations, accurate verification, and smoother call handling. Your team receives fully updated, real-time information for every interaction.

Is telli compliant?

Yes. telli is built with strict security and privacy standards, including HIPAA, GDPR, and SOC 2 compliance. All data is encrypted, access is tightly controlled, and processes are audited regularly. This ensures customer information remains secure and that your business meets regulatory obligations without additional effort.

Can I optimize telli’s AI agents?

Yes. telli includes a powerful prompt editor called telli studio that allows you to refine responses, workflows, and conversation logic. You can adjust tone, instructions, and behavior to match your brand and operational needs or our team can help you do so. Continuous optimization helps your AI receptionist become smarter, more accurate, and more aligned with your customer experience goals.

Do telli’s voice agents sound like AI?

No. telli’s voice AI is designed to sound natural, human-like, and conversational. Our customers consistently report that callers don’t realize they’re speaking with AI — and many find it hard to believe even after being told. The result is a smooth, engaging experience that feels like talking to a real customer success representative.