OpenServed

Best Marketing Email Marketing Agencies (2026) – Ranked by Case Studies

SoproVisit Website →
Write Arm Client-verified
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Brighton, United Kingdom
N/A
  • 1,500+ leads generated through Sopro campaigns
  • Cost per lead of £42 with a 4.3% lead rate
CopyHouse Client-verified
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Edinburgh, United Kingdom
N/A
  • First deal closed within two months, covering Sopro's service costs
Getting the Market
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Rotterdam, Netherlands
N/A
  • 6X ROI
  • 218+ leads secured
  • Cost per lead of approximately €80
Social BloomVisit Website →
Advertise Purple Client-verified
Lead Generation, Email Marketing
Marketing
51-200 Employees
N/A
Santa Monica, CA
N/A
  • $1.5M in pipeline value generated in 90 days
  • 50+ SQLs generated
  • 3 outbound campaign verticals (TikTok Shop, Amazon, affiliate)
Space Bar Studios Client-verified
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
New York, NY
N/A
  • $800K in pipeline value generated in 3 months
  • 78 SQLs generated
  • 160 positive responses
Grow Solo Media
Lead Generation, Email Marketing
Marketing
N/A
N/A
N/A
N/A
  • $113K in new pipeline within 20 days
  • 3.8% positive reply rate
  • 40% average open rate
Outbound SystemVisit Website →
FireVibe Web Design Client-verified
Lead Generation, Email Marketing
Marketing
1-10 Employees
N/A
Hagerstown, MD
N/A
  • 15 meetings booked in 1 month
  • 2 deals closed in 1 month
Lead Marvels
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Fishkill, NY
N/A
  • 120+ qualified leads in 12 months
  • $786K qualified pipeline built through cold email
  • 350+ Microsoft inboxes across 9 domains for consistent inbox placement
Evolved Commerce
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Lehi, UT
N/A
  • 3 deals closed in 3 months
  • 33 meetings booked
Sapper Consulting LLCVisit Website →
(un)Common Logic Client-verified
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Austin, TX
N/A
  • $16K revenue generated
  • 91 lifetime meetings booked
  • 23% lifetime ROI
Square360
Lead Generation, Email Marketing
Marketing
N/A
N/A
N/A
N/A
  • 200% ROI in the first year
  • First new client in 3+ years signed within 3 months
  • 2 additional clients signed in the first year
Acceleration PartnersVisit Website →
CouponFollow (AP Brand Newsletter) Client-verified
Email Marketing, Lead Generation
Marketing
51-200 Employees
N/A
New York, NY
N/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
BelkinsVisit Website →
Titan Growth
Email Marketing
Marketing
11-50 Employees
N/A
San Diego, CA
N/A
  • 84% email open rate
  • 99% email deliverability rate
MarketJoy, Inc.Visit Website →
Viachem
Lead Generation, Email Marketing
Marketing
N/A
N/A
Plano, TX
N/A
  • 91 targeted leads in 10 weeks
  • Pipeline filled for an entire year

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