Best Lead Generation Agencies for Medium Business (2026) – Ranked by Case Studies
Unifocus Client-verified
Lead Generation
SaaS
51-200 Employees
N/A
Carrollton, TX
N/A- 56 appointments booked in 8 months
- 100% avg. KPI rate achieved
Maark Client-verified
Lead GenerationMarketing51-200 EmployeesN/ABoston, MAN/A- $1.5M biggest deal in pipeline
- 25 appointments booked in 3 months
Lead GenerationMental Health51-200 EmployeesN/AMenlo Park, CAN/A- 34 appointments booked in 2 months
- 130% avg. KPI rate achieved
Assenagon Asset Management Client-verified
Social Media Ads, Lead GenerationFinance51-200 EmployeesN/AMunich, GermanyN/A- 100% increase in monthly baseline leads
- Full tracking and CRM integration
- Multi-channel acquisition engine
Das Zelt Client-verified
Lead Generation, Social Media AdsEntertainment51-200 EmployeesN/AN/AN/A- 2,000+ B2B leads in 9 months
- 16x return on ad spend
- Growth in both B2C ticket sales and B2B revenue
IPS Group Client-verified
Lead GenerationManufacturing51-200 EmployeesN/ASan Diego, CAN/A- 100% Lead routing accuracy
- 0 Cross-region leakage
- Single click RFQ generation
- Real-time Pipeline visibility
nOps Client-verified
Lead GenerationSaaS51-200 EmployeesN/ASan Francisco, CAN/A- 3+ Years of embedded HubSpot partnership
- 100% Salesforce decommissioned
- 51% Email open rate (vs 20% benchmark)
- 177% Top rep quota attainment
Advertise Purple Client-verified
Lead Generation, Email MarketingMarketing51-200 EmployeesN/ASanta Monica, CAN/A- $1.5M in pipeline value generated in 90 days
- 50+ SQLs generated
- 3 outbound campaign verticals (TikTok Shop, Amazon, affiliate)
IFPG & WorkWave Client-verified
Lead Generation, Email MarketingFranchise51-200 EmployeesN/AParlin, NJN/A- $13M+ combined pipeline value across two engagements
- $8M+ pipeline for IFPG
- $5M+ pipeline for WorkWave
CalTech Client-verified
SEO, Lead Generation, Web DesignMSP51-200 EmployeesN/ASan Angelo, TXN/A- $4.3M in new revenue
- $78,000 in new MRR
- Inbound leads grew from 0-2 to 23+ qualified per month
SEO, Lead Generation, Web DesignMSP51-200 EmployeesN/AGoleta, CAN/A- $3.7M+ in lifetime revenue closed
- $1M+ billed directly from Jumpfactor leads
- 1,300x increase in search visibility
- $13,000 MRR deal closed
SEO, Lead Generation, Web DesignMSP51-200 EmployeesN/ALewisville, TXN/A- $4.8M in new lifetime revenue
- Cost per lead under $1,200
- $12K/month PE-backed client closed
- Became the primary lead generation engine in 2024
CouponFollow (AP Brand Newsletter) Client-verified
Email Marketing, Lead GenerationMarketing51-200 EmployeesN/ANew York, NYN/A- 30K+ newsletter recipients with a 56% open rate
- +37% average revenue increase for participating brands
- +13% average clicks and +10% average transactions for brands
Lead GenerationPublishing51-200 EmployeesN/ASan Francisco, CAN/A- 361% of YoY revenue projection
- 30% of orders generated by coupon partners
- 50% commission expense reduction
- 50% ROAS increase for some partners
Lead GenerationEyewear51-200 EmployeesN/ASan Diego, CAN/A- 4,059% ROAS
- +94% YoY affiliate revenue growth in 2021
- $1.66 CPA
- 56% of revenue from new customers; affiliate is 9%+ of e-commerce revenue
Fyle Client-verified
PPC, Lead GenerationSaaS51-200 EmployeesN/ANewark, DEN/A- Demos booked +34% and cost per demo down 27%
- Paid search revenue +30%
- Search impressions nearly doubled
Email Marketing, Lead GenerationSaaS51-200 EmployeesN/ASeattle, WAN/A- 100% install-to-lead conversion with zero lead leakage
- ~2,000 installs a month now enter HubSpot with accurate routing
- 100% of customer success handoffs tracked via pipeline
- 40+ HubSpot properties added in 6 months
Search Solution Group Client-verified
SEO, Web Design, Lead GenerationProfessional Services51-200 EmployeesN/ACharlotte, NCN/A- +40% inbound leads by Q1 2023
- +50% organic search traffic over six months
- +35% click-through rate after moving to responsive search ads
Carbon Clean Client-verified
Branding, SEO, Lead GenerationEnvironmental Services51-200 EmployeesN/ALondon, United KingdomN/A- $113M+ pipeline value created in the first year from online sources
- +400% organic traffic over 6 months
- +162% lead generation YoY
- Millions added to pipeline within 60 days
Intelligent Product Solutions (IPS) Client-verified
Lead Generation, Email MarketingSoftware Development51-200 EmployeesN/AHauppauge, NYN/A- More prospect introductions in 8 months than in the prior few years
- Full sales pipeline from outbound email
Sterling Lawyers (AI Adoption) Client-verified
Lead GenerationLaw Firm51-200 EmployeesN/AMenomonee Falls, WIN/A- Average revenue per attorney doubled from $270K+ to $600K+
- Client inquiry triage cut from 1.5-8 hours to real time
- ~200 files per month closed with fixed-fee audits
- Three attorneys generating up to $1M per year
Arctic Air Conditioning Client-verified
Lead GenerationHome Services51-200 EmployeesN/AOld Bridge, NJN/A- $81,219 in additional revenue from a $5,500 investment
- 100 additional booked jobs in one year
- 29% of phone calls flagged for lead recovery
Lead GenerationTechnology51-200 EmployeesN/AUnterengstringen, SwitzerlandN/A- 12,395 contacts researched
- 368 replies
- 37 appointments scheduled
Lead GenerationSoftware Development51-200 EmployeesN/ADublin, IrelandN/A- 15,500 contacts researched
- 46 appointments scheduled
- 13% conversion rate
Lead GenerationMarketing51-200 EmployeesN/AKearney, NEN/A- 4,500 contacts researched
- 38 appointments scheduled
- 10x average ROI
Lead Generation, Email MarketingTechnology51-200 EmployeesN/ASan Jose, CAN/A- 17% increase in net new leads
- 241 form fills
- 200+ unique company leads
- 20%+ increase in engagement
Lead Generation, Email MarketingGovernment51-200 EmployeesN/AColumbus, OHN/A- $1B+ in marketing-attributed revenue
- 30%+ increase in inbound engagement
- 25% campaign conversion
- 33%+ increase in form submissions
Lead GenerationMarketing51-200 EmployeesN/AN/AN/A- 49% projected year-over-year revenue growth
- 29% increase in average closed-won deal size
Lead Generation, Content MarketingMarketing51-200 EmployeesN/AN/AN/A- 5x top-of-funnel pipeline growth after webinars
- 166 average registrants per webinar at a 37% attendance rate
- 20 typical qualified deals started from webinar touchpoints
Lead GenerationHome Services51-200 EmployeesN/ANazareth, PAN/A- Total revenue up 69.7% within one month
- Ticket value of identified leads 27.8% above average
PPC, Lead GenerationAutomotive51-200 EmployeesN/ASan Antonio, TXN/A- Turned $600 into $19K+ in one month
Social Media Ads, Lead GenerationLegal Tech51-200 EmployeesN/AHouston, TXN/A- $4,340 in ad spend generated 2,711 clicks
- 2.65% CTR, well above the LinkedIn average
- $1.60 cost per click
- $123 cost per lead
Content Marketing, Email Marketing, Lead GenerationIndustrial51-200 EmployeesN/APalatine, ILN/A- 51% increase in organic traffic and 73% increase in blog traffic
- 61% increase in new leads
- LinkedIn training for sales: 353% more interactions and 424% more shares
- 300% increase in new contacts
Web Development, Lead GenerationLaw Firm51-200 EmployeesN/AAtlanta, GAN/A- $240K+ in annual labor savings
- 6,000+ hours reclaimed
- Intake response time cut from days to minutes
Lead Generation, Email MarketingSaaS51-200 EmployeesN/AZurich, SwitzerlandN/A- 28 meetings booked in 7 months
- 43 average replies per month
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