OpenServed

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

The Pedowitz GroupVisit Website →
Ipswitch Client-verified
Lead Generation, Email Marketing
Technology
201-500 Employees
N/A
Lexington, MA
N/A
  • 1000% growth in MQL pipeline conversion
  • 62% growth in MQLs
  • 85% less troubleshooting time
Teledyne LeCroy
Lead Generation, Email Marketing
Manufacturing
501-1K Employees
N/A
Chestnut Ridge, NY
N/A
  • 30% marketing efficiency gain
  • 20% more new leads
  • 15% increase in pipeline conversion
  • 40% marketing productivity gain
NoGoodVisit Website →
Fratelli Carli Client-verified
PPC, Social Media Ads, Email Marketing
Food & Beverage
201-500 Employees
N/A
Imperia, Italy
N/A
  • 350% YoY Increase in New Customer Revenue
  • 50% YoY Increase in Existing Customer Revenue
  • 6x ROAS
SteelSeries
AEO, CRO, SEO, Email Marketing, SMS Marketing
Retail
201-500 Employees
N/A
Chicago, IL
N/A
  • 20% YoY Net Revenue Growth
  • 25% YoY Improvement in Purchase CVR
  • 331% QoQ Lift in Engine Activations
Kuno CreativeVisit Website →
iOFFICE Client-verified
Web Design, Content Marketing, Email Marketing
SaaS
201-500 Employees
N/A
Houston, TX
N/A
  • Website leads +44.72%
  • Marketing-to-sales qualified leads +83%
  • Organic website traffic +33.54%
  • New customer acquisition +66%
WpromoteVisit Website →
Klipsch Client-verified
Email Marketing, PPC, Social Media Ads
Consumer Electronics
201-500 Employees
N/A
Indianapolis, IN
N/A
  • 42% Higher Conversion Rate
  • 20% Growth in Followers 18-44
  • 9.7M Impressions
BraftonVisit Website →
MoEngage
Content Marketing, Email Marketing
SaaS
501-1K Employees
N/A
San Francisco, CA
N/A
  • 1156 additional organic sessions
  • 10,466 increase in total site traffic
  • 136 asset downloads in 2022
  • 10K sessions from eBooks in a year
CFGI
Content Marketing, Email Marketing, Web Design
Finance
501-1K Employees
N/A
Boston, MA
N/A
  • 300+ deliverables produced
  • 100+ booked meetings
  • 97% increase in Page 1 rankings
  • 94% increase in YoY traffic
  • 82 leads generated from LinkedIn ads in a quarter
MerkleVisit Website →
Mester Grønn
CRM, Email Marketing, Customer Data Platform
Florist
501-1K Employees
N/A
Lier, Norway
N/A
  • 65.2% reduction in membership churn (April-October 2023 vs. prior year)
  • 7.8% increase in new members YOY
  • Orchid care tips email: 58.4% open rate (23.4% increase)
  • Orchid care tips email: 19.7% click-through rate (303% increase)
  • TikTok ASMR tulip care video: 1.6 million views
R.M. Williams
Marketing Automation, Customer Data Platform, Email Marketing
Fashion
501-1K Employees
N/A
Adelaide, Australia
N/A
  • $170k in 3 months
IQnectionVisit Website →
Roosevelt Paper Company
SEO, Email Marketing, Content Marketing
Industrial
201-500 Employees
N/A
Mount Laurel, NJ
N/A
  • Contact form completions up 83.43% year over year
  • Users up 32.72% and sessions up 39.89% year over year
  • Satisfaction survey emails: 29.17% open rate, 16.67% CTR, no unsubscribes
  • Ranked #1 on Facebook for reach among its competitors
Hivehouse DigitalVisit Website →
EOS Worldwide
Content Marketing, Email Marketing, Lead Generation
Professional Services
501-1K Employees
N/A
Livonia, MI
N/A
  • 100% increase in sales qualified leads (SQLs)
  • 90% increase in monthly website visits
  • 98% increase in webinar registrations
  • 72% increase in monthly blog views
  • Book launch hit #1 New Release on Amazon in two categories
InteractOneVisit Website →
Hydraulic Supply Company
PPC, SEO, Email Marketing
Industrial
201-500 Employees
N/A
Sunrise, FL
N/A
  • 41% year-over-year revenue growth
  • New website users doubled
  • 66% increase in organic sessions
Motion AgencyVisit Website →
Truluck's
Content Marketing, Email Marketing, Social Media Ads
Restaurant
201-500 Employees
N/A
Houston, TX
N/A
  • $1MM incremental revenue month over month from the paid digital campaign
  • 8 of 12 restaurant locations saw double-digit sales increases (2023-2024)
  • 1MM new users to the reservation portal across 12 locations in one year
  • 7.2MM media impressions for the Rosemont, IL location launch
  • 28% average email open rate and 18-22% conversion to OpenTable reservations
BLD MarketingVisit Website →
PERI
PPC, Social Media Ads, Email Marketing
Construction
201-500 Employees
N/A
Weissenhorn, Germany
N/A
  • 6.8M annual impressions
  • 40% YoY increase in website users
  • 21,000% YoY increase in users from paid search
  • 1,283% YoY increase in users from programmatic display and LinkedIn ads
  • 483% YoY increase in users from emails
RejoinerVisit Website →
A.T. Cross
Email Marketing
Consumer Goods
201-500 Employees
N/A
Providence, RI
N/A
  • 76% less email sent
  • 35% year-over-year increase in last-click email revenue
  • 112% year-over-year increase in email conversion rate
Big SeaVisit Website →
Conner Prairie
Content Marketing, Email Marketing
Museum & Cultural
201-500 Employees
N/A
Fishers, IN
N/A
  • $40,000+ raised for the Mission Impact Fund (goal hit)
  • $15,000 matching gift unlocked
  • 50%+ average open rate on four-part email nurture series (nonprofit benchmark ~26%)
Avalaunch MediaVisit Website →
Whitefish Credit Union
SEO, Email Marketing, PPC
Bank
201-500 Employees
N/A
Whitefish, MT
N/A
  • 74.32% increase in organic traffic YoY
  • 145% increase in paid media CTR
  • 55%+ view rate on video ads
  • 40% increase in loan applications YoY
LOCALiQVisit Website →
Georgia Department of Community Affairs
Social Media Ads, Email Marketing, SEO
Real Estate
201-500 Employees
N/A
Atlanta, GA
N/A
  • 4x higher Social Ad CTR than industry average
  • 250% higher nurture email CTR than industry average
  • 79% increase in organic leads
OuterBoxVisit Website →
Unclaimed Baggage
Email Marketing, SMS Marketing
Retail
201-500 Employees
N/A
Scottsboro, AL
N/A
  • 40,300 Orders Attributed to Email in Last 12 Months
  • 143,100 New Contacts Generated in Last 12 Months
  • 51% of Revenue From Email in Last 12 Months
Coalition TechnologiesVisit Website →
WestPoint Home
Email Marketing, PPC, SEO, Web Development
Home & Garden
501-1K Employees
N/A
New York, NY
N/A
  • 40.6% Increase in Overall Site Users
  • 41.3% Increase in New Users
  • 36.7% Increase in Sessions
  • 2,565% Increase in Open Rate
  • 62% Increase in Average Order Value From Email Campaigns
WebFXVisit Website →
Kent County Tourism Corporation
Social Media Ads, YouTube Advertising, SEO, PPC, Email Marketing
Travel
201-500 Employees
N/A
Chestertown, MD
N/A
  • 630% INCREASE IN E-NEWSLETTER SIGN-UPS VIA SOCIAL ADVERTISING
  • 267% Increase in Visitor Guide Requests via Social Ads
  • 167% INCREASE IN CONTACT FORM SUBMISSIONS VIA SOCIAL ADVERTISING
  • 109% INCREASE IN AD CLICK-THROUGH RATE (CTR)
  • 82% IMPROVEMENT IN COST PER LEAD WITH CONVERSIONS API
BelkinsVisit Website →
Fire Safety and Protection (FSP)
Lead Generation, Email Marketing
Security
201-500 Employees
N/A
Atlanta, GA
N/A
  • 341 Appointments in 8 months
  • $300K+ Closed revenue
Big LeapVisit Website →
Sew Sweet Minky (Reputation Management)
Review Management, Email Marketing
Ecommerce
501-1K Employees
N/A
Spanish Fork, UT
N/A
  • 94+ New Google Reviews
  • 4.5 Star Rating (Up From 3.4)

Find the best Email Marketing agencies for your business size