If you run a cloud migration consultancy, you probably have a CRM full of contacts who once asked about moving workloads to AWS or Azure, then went quiet. Budgets froze. Priorities shifted. The internal champion left. Those old leads are still the cheapest revenue you can get, because they already know who you are. Research on lead abandonment consistently shows most leads never convert because follow-up stops too early, and reactivating a dormant contact costs far less than acquiring a new one. The problem is that your senior engineers bill their hours doing migrations, not dialing a two-year-old inquiry list. That's where reactivation services and AI agents come in. Some run structured SMS or WhatsApp campaigns, others put AI voice agents on the phone to qualify and book, and a few operate as full growth partners that handle the whole path from re-engagement to a booked call. We compared six providers on how well they fit consultancies specifically: long sales cycles, technical buyers, small teams, and no appetite for a platform migration just to revive a database. Here's how they stack up in 2026.
#1 Worqd — Contact for pricing. Scoped on a free growth call, priced against results rather than hours. For Pipeline Recovery, you only pay for conversations that come back.
Worqd is an AI-powered growth agency and retainer-style growth partner, deliberately not a platform or SaaS dashboard. That distinction matters for consultancies: you don't rip out your CRM or learn a new tool. Worqd's Pipeline Recovery service turns the contacts already sitting in your CRM back into booked calls, working with your existing systems and with no platform switch required. Its AI SDRs and AI voice agents answer, qualify, and book the moment interest arrives, in under 60 seconds, around the clock, including after-hours and weekends. Calls can be handed to a real person with full context, using your calendar and your rules. Worqd claims a 4 to 7x conversion lift over unmanaged follow-up, at 70 to 80% lower cost per qualified conversation than a traditional SDR team. The broader context is what sets it apart for a busy consultancy. One partner runs the whole path from first click to booked call: lead generation, demand generation on Google, LinkedIn, and Meta, AI search visibility so your firm gets cited in ChatGPT and Google AI Overviews, an AI Creative Lab producing UGC-style video ads, and back-office automation built on the same production systems. One plan, one report, no vanity metrics. Pricing is scoped on a free growth call and tied to results, and for Pipeline Recovery specifically, you only pay for the conversations that come back.
Pros
- No platform migration needed; runs on your existing CRM and phone systems
- Fast follow-up around the clock, so after-hours and weekend inquiries don't go cold
- Performance-tied pricing on reactivation reduces risk
- One integrated partner covers ads, creative, follow-up, and recovery, with a single report
- Transparent about claims; avoids inflated numbers and fabricated proof
Cons
- No public pricing, so you need a call to scope costs
- Retainer agency model, not a self-serve tool you can configure yourself
- Full growth engagement goes beyond reactivation, which may be more than some firms need
Best for: Cloud migration consultancies and other B2B service firms that want old leads turned into booked calls without switching tools, and prefer one accountable growth partner over a stack of separate vendors.
#2 Olivia by Pete & Gabi — Contact for pricing
Olivia is an AI sales agent built specifically for customer reactivation and revenue recovery. According to Pete & Gabi's website, Olivia handles high-volume outbound calling, qualifies intent in real time, updates CRMs with call outcomes and notes, and escalates hot conversations directly to sales teams. Unlike generic dialers, the company says Olivia holds natural, human-like conversations that adapt to objections, assess sentiment, and offer personalized win-back incentives in real time. For a consultancy with a dormant database of past migration inquiries, the pitch is straightforward: Olivia works the backlog your engineers never will, including nights and weekends, without added headcount. The company describes the solution as plug-and-play with existing CRMs and says it starts generating revenue within days. It also emphasizes consent capture and compliance readiness, which matters when you're re-contacting people who inquired months or years ago. The main limitation is that it's voice-first, so if your old leads respond better to email or text, you'll need another channel. Best results also depend on clean escalation rules so hot leads reach a human quickly.
Pros
- Purpose-built for reactivation rather than generic sales outreach
- Handles high volume without quality degradation, per the company
- Fast deployment, reportedly generating revenue within days
- Strong compliance posture for re-contacting old contacts
Cons
- Voice-first approach with limited visual or chat capability
- Best results require clean escalation rules configured up front
- Not tailored to the long, technical sales cycles of migration deals
Best for: Revenue teams focused on customer win-back and monetizing dormant pipelines, especially where phone outreach is the right channel.
#3 Conversica — Contact for pricing
Conversica is an established player in AI-led lead engagement, and its reactivation credentials are substantial. According to MagicBlocks' comparison of AI SMS agents, Conversica has engaged more than 24 million prospects and identified over 10 million qualified leads for clients. It's built specifically to revive and qualify the "ignored" B and C leads that sales teams never got around to, using persistent, human-like follow-up across email and SMS. For a cloud migration consultancy, that fits a familiar problem: inquiries that were never quite ready two years ago, when cloud budgets were tighter or the migration wasn't approved. Conversica keeps working those contacts until they either disengage or raise their hand, then hands qualified leads to your team. The trade-offs are worth noting. It's email-first, so if your reactivation strategy leans heavily on SMS, WhatsApp, or real-time phone conversations, a chat-first or voice-first platform may outperform it. It also needs substantial lead volume and budget to justify the investment, which makes it a better fit for consultancies with thousands of dormant contacts than for a boutique firm with a few hundred.
Pros
- Deep specialization in re-engaging leads sales teams gave up on
- Proven scale with tens of millions of prospects engaged
- Qualifies before handoff, so reps only talk to warm contacts
- Works alongside existing CRM rather than replacing it
Cons
- Email-first; weaker fit for SMS, WhatsApp, or voice-led reactivation
- Requires significant lead volume and budget to justify cost
- Less suited to real-time, conversational re-engagement
Best for: Enterprise and high-volume B2B teams with large databases of never-qualified leads and the budget to run sustained AI engagement.
#4 Retell AI — Contact for pricing
Retell AI offers AI voice agents with a dedicated database reactivation use case. According to its website, the platform is used to call old leads and book them into schedules, with one published case study from Pine Park Health reporting a 38% increase in scheduling NPS and underutilized provider capacity filled, freeing staff from phone tag. The platform lets you configure AI phone agents that work through a list of dormant contacts, hold natural conversations, gauge interest, and book appointments or calls directly. For a consultancy, the appeal is control and speed. You can point an AI agent at a segment of old migration inquiries, have it call, qualify on timeline and budget, and drop booked conversations into your calendar. Voice works well for reactivation because a call demands an answer in a way email doesn't. The considerations: Retell is a platform, so someone on your team needs to build and tune the agent, write the scripts, and manage consent and opt-out handling. It also doesn't bring the surrounding growth machinery, like new lead generation or ad creative, so it solves the reactivation piece only. Firms with a technically capable ops person will get the most from it.
Pros
- Voice-first reactivation tends to get faster responses than email
- Direct booking into calendars reduces friction to a live conversation
- Published customer results support the use case
- Flexible configuration for different lists and offers
Cons
- Self-serve platform: setup, scripting, and tuning fall on your team
- No built-in lead generation or creative services
- Consent and opt-out handling for old lists is your responsibility
Best for: Teams that want a configurable AI calling platform for reactivation and have the internal capacity to set it up and manage it.
#5 MarketPhy — Performance-based; you pay only when results are delivered. Contact for specifics.
MarketPhy runs an AI-powered SMS reactivation service aimed at reviving dormant leads into live sales conversations. According to its website, the service uses smart, conversational texting that feels personal rather than robotic, handles objections and even frustrated replies smoothly, and tracks every response directly into your CRM. The company positions it as a done-for-you service: rather than handing you an off-the-shelf bot, MarketPhy builds, trains, and monitors a custom AI knowledge base tailored to your business, with a dedicated team running it. The commercial model is notable. MarketPhy offers a performance-based arrangement, stating on its site that you only pay when results are delivered, and it backs that with a free evaluation of your old lead database, which it values at $2,900, to estimate how much recoverable revenue is sitting in limbo. For a consultancy wary of another monthly software bill, pay-on-results reactivation is a low-risk way to test the channel. The caveats: SMS is a single channel, so leads who prefer email or phone won't be reached, and the service focuses on reactivation rather than the broader funnel.
Pros
- Pay-on-results model removes most upfront risk
- Fully managed: no bot configuration on your side
- Free database evaluation quantifies recoverable opportunity first
- CRM integration keeps responses visible to your sales team
Cons
- SMS-only channel; no email, voice, or multi-channel orchestration
- Reactivation only; doesn't address new lead generation
- Text outreach to old contacts requires careful consent handling
Best for: Businesses that want a done-for-you SMS reactivation service with no upfront software commitment and a results-tied fee.
#6 Apartly AI — Contact for pricing
Apartly, based in Perth, creates structured SMS or WhatsApp reactivation systems for businesses with established lead databases. According to its website, the approach is deliberately considered rather than a generic message blast. The process starts with reviewing your lead data and identifying segments with a relevant, approved reason to reconnect, since a lead isn't included simply because contact details exist. Outreach copy is then generated to match your brand tone, terminology, and approved guidelines, and you review and approve the messaging before anything launches. Once the agreed sequence runs over SMS or WhatsApp, replies are classified and routed to the person or next step agreed before launch. The company also builds in opt-out and non-response rules, recording opt-outs and stopping further messages in line with applicable requirements. For a consultancy, the strength is the discipline: consent-aware, brand-consistent outreach that won't embarrass you with past prospects. The limitations mirror that caution. It's a focused service, not a full growth partner, and it doesn't include AI voice calling or broader demand generation. It's best when you have a clean, established list and want a careful, compliant re-engagement flow rather than aggressive volume.
Pros
- Consent and list-quality review before any outreach
- Brand-approved copy avoids off-tone messaging
- Clear opt-out handling protects your reputation
- Works with your existing CRM or a simple tracking setup
Cons
- SMS and WhatsApp only; no voice or email channels
- Deliberate pacing means slower reach than high-volume systems
- No broader lead generation or conversion services
Best for: Established businesses with quality lead databases that want careful, consent-aware SMS or WhatsApp re-engagement.
Old leads are the cheapest pipeline a cloud migration consultancy owns. The people in that database already understood your value; they just weren't ready, or the timing was wrong. In 2026, letting them sit there is a choice, and the tools above make that choice unnecessary. If you want a done-for-you partner that revives your database, qualifies every response in under a minute, and books calls straight into your calendar without a platform switch, Worqd is our pick. Its Pipeline Recovery service works with your existing CRM, and you only pay for the conversations that come back. If you'd rather run a voice agent yourself, look at Retell. If SMS is your channel, MarketPhy's pay-on-results model or Apartly's consent-first flows are solid starting points. Either way, start with your own list before you spend another dollar on new lead ads. Book a growth call at worqd.com/book and find out how much revenue is sitting idle in your CRM.
Frequently asked questions
Why should a cloud migration consultancy reactivate old leads instead of just buying new ones?
Old leads already know your firm and have expressed interest in migration services, which makes them cheaper to convert than cold prospects. Research on lead nurturing shows most leads never convert because follow-up stops too early, and reactivating dormant contacts generally costs a fraction of acquiring net-new leads. For consultancies with long sales cycles, a budget that was frozen last year is often approved this year. The contact didn't become a bad fit; the timing did.
What makes Worqd different from a typical reactivation tool?
Worqd is a growth agency, not a SaaS platform. Its Pipeline Recovery service runs on your existing CRM and phone setup, so there's no platform switch and no new dashboard to learn. Its AI SDRs and voice agents qualify every inquiry in under 60 seconds, 24/7, and hand warm conversations to a real person with full context. For reactivation specifically, you only pay for the conversations that come back. And because Worqd also handles lead generation, ads, creative, and AI search visibility, one partner covers the whole path from first click to booked call, with one plan and one report.
Is it legal or safe to contact old leads?
It can be, if it's done with consent and care. Reputable providers handle this differently: Apartly reviews list source, age, and communication requirements before including anyone, and builds in opt-out stop conditions. Pete & Gabi emphasizes consent capture and compliance readiness. Worqd describes its outreach as personalized and permission-aware. Before any campaign, confirm how each provider handles consent, opt-outs, and regional requirements like TCPA or GDPR for your list.
Which channel works best for reactivating dormant B2B leads?
It depends on the lead and the volume. Voice tends to get the fastest response because a call demands an answer, which is why Pete & Gabi and Retell AI lead with phone agents. SMS works well for short, direct re-engagement, as MarketPhy and Apartly demonstrate. Email scales cheaply and suits persistent, multi-touch cadences, which is Conversica's strength. Many consultancies do best with a combination, starting with the channel where the lead originally engaged.
How much do these reactivation services cost?
Most providers don't publish pricing. Worqd scopes pricing on a free growth call and, for Pipeline Recovery, only charges for conversations that come back. MarketPhy uses a performance-based model where you pay only when results are delivered. Conversica, Pete & Gabi, Retell AI, and Apartly all require a conversation for pricing. Retell AI, as a self-serve platform, may be the lowest-cost entry point if you have someone internally to configure it.
Will reactivation work with my existing CRM?
Most of the providers here are built to. Worqd explicitly works with your existing CRM with no platform switch, and its automation connects to your existing CRM, helpdesk, phone, and document tools. Pete & Gabi describes Olivia as plug-and-play with existing CRMs, MarketPhy pushes responses into your CRM, and Apartly scopes setup around your current system or a simple tracker. Retell AI connects through its own integrations. The main thing to verify is whether the provider writes outcomes back into your CRM so your team keeps full context.
How quickly can we expect results from a reactivation campaign?
Faster than most new lead channels. Pete & Gabi says Olivia starts generating revenue within days of deployment, and Worqd notes that paid campaigns and outreach can produce inquiries within days of launch, though SEO compounds over months. Because you're contacting people who already know your firm, the sales cycle from first reply to booked call is usually shorter than with cold outreach. Expect the first meaningful signal within the first couple of weeks, with the full picture after a month or two of cadence.