OpenServed

Best Email Marketing Agencies in the United States (2026) – Ranked by Case Studies

Social BloomVisit Website →
Bifrost Client-verified
Lead Generation, Email Marketing
AI
11-50 Employees
N/A
San Francisco, CA
N/A
  • $12.5M in pipeline value in one year
  • 10-20 calls booked per month
  • 32% average open rate, 4% positive reply rate
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
IFPG & WorkWave Client-verified
Lead Generation, Email Marketing
Franchise
51-200 Employees
N/A
Parlin, NJ
N/A
  • $13M+ combined pipeline value across two engagements
  • $8M+ pipeline for IFPG
  • $5M+ pipeline for WorkWave
The Pedowitz GroupVisit Website →
Rackspace Client-verified
Lead Generation, Email Marketing
Technology
5K-10K Employees
N/A
San Antonio, TX
N/A
  • 55% increase in MQLs
  • 84% increase in average revenue per user
  • 300% increase in process automation
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
F5 Client-verified
Lead Generation, Email Marketing
Technology
5K-10K Employees
N/A
Seattle, WA
N/A
  • 4X increase in MQLs
  • 62% increase in website visits
  • 75% increase in form submits
  • 130 processes streamlined
Spotlight BrandingVisit Website →
Danilson Law, PLC Client-verified
Social Media Ads, Email Marketing
Law Firm
1-10 Employees
N/A
Johnston, IA
N/A
  • Leads converted into 17 calls and 7 paying clients
  • Meta Ads produced a strong ROI almost immediately
The Trembly Law Firm Client-verified
Web Design, Email Marketing, Social Media Ads
Law Firm
1-10 Employees
N/A
Miami, FL
N/A
  • Revenues up at least 30% year over year
  • Grew from a solo shop to a 3-attorney, 8-person firm in four years
Vasquez de Lara Law Group Client-verified
Email Marketing, Social Media Ads, Content Marketing
Law Firm
11-50 Employees
N/A
Miami, FL
N/A
  • Firm's gross income more than doubled in two years
MarketJoy, Inc.Visit Website →
Publicity.ai Client-verified
Lead Generation, Email Marketing
SaaS
1-10 Employees
N/A
San Francisco, CA
N/A
  • 2 major deals closed in 2 months
  • 6 high-quality leads in month two
  • 4-5 qualified leads per month ongoing
Lindquist Machine Corp Client-verified
Lead Generation, Email Marketing
Manufacturing
N/A
N/A
Green Bay, WI
N/A
  • 65 high-value meetings in 6 months
  • 15 meetings in the first month
  • Months 4-6 delivered double the leads of months 1-3
Gartner
Lead Generation, Email Marketing
Technology
10K+ Employees
N/A
Stamford, CT
N/A
  • 67% conversion into sales qualified opportunities in July
  • 25% month-over-month increase in lead volume
  • Most profitable month of the partnership
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
Tortoise Finance Client-verified
Lead Generation, Email Marketing
Finance
N/A
N/A
New York, NY
N/A
  • $200K+ net profit in 2 years
  • 4 new clients in 6 months
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
UFO Performance MarketingVisit Website →
Tisch Scientific Client-verified
SEO, PPC, Email Marketing
Industrial
N/A
N/A
North Bend, OH
N/A
  • 30% annual growth rate sustained for 5 years
  • 250% increase in revenue
  • 1,789% increase in SEO traffic
Blade & Blue Client-verified
PPC, SEO, Email Marketing
Fashion
N/A
N/A
San Francisco, CA
N/A
  • +405% ROAS on paid campaigns
  • +65% revenue growth
  • +71.2% increase in conversion rates
THE WEB Extreme Entertainment
PPC, SEO, Email Marketing
Hospitality
N/A
N/A
West Chester, OH
N/A
  • Overall site traffic more than tripled
  • +80% increase in traffic to all service lines
  • 50-70% decrease in average cost per click on key keywords
  • Birthday parties traffic up 2,300%
  • 50 keywords ranked #1 in Google, up from 2
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
Intelligent Product Solutions (IPS) Client-verified
Lead Generation, Email Marketing
Software Development
51-200 Employees
N/A
Hauppauge, NY
N/A
  • More prospect introductions in 8 months than in the prior few years
  • Full sales pipeline from outbound email
Lantern SolVisit Website →
Recreations Outlet Client-verified
SEO, PPC, Email Marketing
Outdoor Recreation
N/A
N/A
Milford, OH
N/A
  • 103% Shopify revenue growth to $1.08M
  • $211K per year in Play Pass and birthday sales online
  • 309% email marketing revenue growth
  • 16.09x Google Ads ROAS
  • 542 Google AI Overview citations (from 1)
Zesty Snackz Client-verified
Web Design, Web Development, Email Marketing
Food & Beverage
N/A
N/A
Lewisville, TX
N/A
  • Full Shopify rebuild in 3 weeks
  • 4 subscription tiers built (from 0)
  • 5/5 rating on Shopify Partners
Greenhouse MarketingVisit Website →
RIND Client-verified
Email Marketing
Food & Beverage
11-50 Employees
N/A
New York, NY
N/A
  • 58% Increase in Email Revenue in 60 Days
  • 35% Increase in Repeat Purchase Rate in 30 Days
  • 54% Increase in Subscriptions in 90 Days
McConnell’s Client-verified
Email Marketing
Food & Beverage
N/A
N/A
Santa Barbara, CA
N/A
  • 313% Increase in Email Flow Revenue in 30 Days
  • 13% Increase in Repeat Purchase Rate in 90 Days
  • 46% Increase in Subscription Revenue in 90 Days
Home Care Marketing ProsVisit Website →
Assisting Hands Boston Northwest Client-verified
Lead Generation, Email Marketing, Branding
Senior Care
N/A
N/A
Massachusetts, United States
N/A
  • Lead volume quadrupled
  • Applicant follow-up in 30 seconds instead of days
  • One recruiter now supports a growing business
HomeChoice Home Care Client-verified
SEO, PPC, Email Marketing
Senior Care
51-200 Employees
N/A
Raleigh, NC
N/A
  • Conversion rate of roughly 35% held on rising lead volume
  • Search rankings held steady instead of sliding
Coalition TechnologiesVisit Website →
Lea Black Beauty Client-verified
Email Marketing, PPC, SEO, Social Media Ads, Web Design, Web Development
Beauty
1-10 Employees
N/A
Miami, FL
N/A
  • 28% Increase in User Engagement
  • 335.5% Increase in Organic Revenue
  • 4.9% Increase in Instagram Followers
  • 28% Increase in Facebook New Page Likes
  • 23.5% Increase in Followers Reached on Instagram
Koyal Wholesale
Email Marketing
Entertainment
N/A
N/A
Fullerton, CA
N/A
  • 277% Increase in With Unique Clicks Up
  • 329% Increase in Organic YoY Revenue
  • 120% Increase in Organic Sessions
  • 516% Increase in Overall Revenue
  • 255% Increase in Sessions
Music Box Attic
Email Marketing, SEO
Gifts
1-10 Employees
N/A
Canoga Park, CA
N/A
  • 67% Increase in Organic Sessions
  • 68% Increase in Organic New Users and All Traffic Increased
  • 190% Increase in Organic Transactions
  • 139% Increase in All Traffic Transactions
LOCALiQVisit Website →
Aubuchon Homes & Miloff Aubuchon Realty Client-verified
PPC, Social Media Ads, Email Marketing
Real Estate
51-200 Employees
N/A
Cape Coral, FL
N/A
  • 300% increase in social ad leads
  • 42% increase in average home sale price
  • 2,300+ clicks on social ads in 2 months
University of Nebraska at Kearney
Email Marketing, PPC, Social Media Ads
Education
1K-5K Employees
N/A
Kearney, NE
N/A
  • 700 Average leads per month
  • 19% Increase in out-of-state enrollments
  • 2x Higher Search Marketing ad CTR than industry average
Mr. Handyman
PPC, Social Media Ads, Email Marketing
Home Services
1-10 Employees
N/A
Huntsville, AL
N/A
  • 120% increase in annual attributed revenue
  • 12% increase in conversion value
  • 65% of call leads from LocaliQ solutions
RejoinerVisit Website →
Momentous Client-verified
Email Marketing
Supplements
11-50 Employees
N/A
Palo Alto, CA
N/A
  • 62.5%+ increase in abandoned cart conversions in under six months
Ketone-IQ
Email Marketing
Food & Beverage
11-50 Employees
N/A
Los Angeles, CA
N/A
  • 30x company growth in three years
  • Subscription ratio grew from 30% to 70%
  • 41.1% boost in average active subscription length
  • $446,000+ in last-click retention revenue in 2024
AuthenTEAK
Email Marketing
Furniture
11-50 Employees
N/A
Atlanta, GA
N/A
  • $2.3M in attributed email revenue
  • 105% increase in total click volume
  • 33% increase in click-through rates
  • 54% reduction in unsubscribes
  • 22% growth in email-driven revenue
OuterBoxVisit Website →
Lethal Performance Client-verified
SEO, PPC, Email Marketing
Automotive
11-50 Employees
N/A
Wellington, FL
N/A
  • 1,103% increase in revenue
  • 456% increase in website traffic
  • 14,213 first-page Google positions (up from 3,800)
  • 479% increase in paid revenue with 124% increase in ad spend
  • 923% growth in online sales over three years
Zerbee Business Products
Email Marketing
Retail
1-10 Employees
N/A
Minneapolis, MN
N/A
  • 133% Flow Revenue Increase
  • 3% Conversion Rate Increase
  • 7% Click Rate Increase
  • 26% Open Rate Increase
DIY Craft Warehouse
Email Marketing
Arts & Crafts
N/A
N/A
Brecksville, OH
N/A
  • 25% of Year's Total Campaign Revenue From November Campaigns
  • 30.73% Open Rate on Pre-November Campaigns
  • 58.24% Open Rate on Black Friday Campaign
  • 6% Pop-Up Conversion Rate
  • 3,000 New Contacts Added Monthly
NoGoodVisit Website →
Invisibly Client-verified
PPC, SEO, CRO, Email Marketing
SaaS
11-50 Employees
N/A
St. Louis, MO
N/A
  • 65% MoM Decrease in CAC
  • 84% Increase in Organic Website Traffic
  • 400% Increase in User Retention QoQ
  • 103% MoM Increase in App Installs
Ghostery
PPC, SEO, CRO, Email Marketing
Cyber Security
11-50 Employees
N/A
New York, NY
N/A
  • 64% Visits With Conversion
  • 127% Increase in Traffic
  • 29% Paid CVR
Intuit
PPC, SEO, CRO, Email Marketing, SMS Marketing
SaaS
1K-5K Employees
N/A
Mountain View, CA
N/A
  • 500% Increase From Trial Sign-Ups to Active Users
  • 45% Increase in Trial Sign-Ups Using Persona-Specific Search Ads
  • 100% NPS Score
Big SeaVisit Website →
Champions for Children Client-verified
Web Design, Email Marketing, PPC
Non Profit
51-200 Employees
N/A
Tampa, FL
N/A
  • 75% increase in online conversions
  • 145% increase in unique donors
  • 115% increase in revenue
  • 30% increase in donations from fundraisers
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%)
Stetson University College of Law
Content Marketing, Email Marketing
University
N/A
N/A
Gulfport, FL
N/A
  • 73% increase in new contacts every month
  • 10.42% click-to-submission rate on CTAs
  • 900+ Stetson Law Blog subscribers
  • 7+% increase in admit-to-deposit rates
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
Coyote Logistics
PPC, Email Marketing
Logistics
1K-5K Employees
N/A
Chicago, IL
N/A
  • 21% decrease in cost-per-lead
  • 50% decrease in CPC
  • 75% increase in impressions
  • April cost-per-lead down 20% MoM during COVID-19
  • Search coverage increased by over 50%
SHEEX
Content Marketing, Email Marketing, Social Media Ads
Bedding
11-50 Employees
N/A
Marlton, NJ
N/A
  • 50,000 Instagram accounts reached
  • Over 1 million steps walked by challenge participants
  • 76,000 hours of sleep gained by participants
  • 2% lead gen acquisition MoM
  • 4% blog traffic increase YoY
WebFXVisit Website →
All Pro Trailer Superstore Client-verified
SEO, Email Marketing
Heavy Equipment
N/A
N/A
Mechanicsburg, PA
N/A
  • 113% Increase in SEO Conversions
  • 50% Increase in SEO Conversion Rate
  • 600% Increase in Leads from Email Marketing
  • 46% Increase in SEO Users
  • 948% Increase in Web Visits from Email
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
York Saw & Knife Co., Inc.
SEO, PPC, Email Marketing, Social Media Ads, Amazon Marketing
Manufacturing
51-200 Employees
N/A
York, PA
N/A
  • 2118% YOY INCREASE IN REVENUE FROM AMAZON ADS
  • 626% YOY INCREASE IN AMAZON SALES
  • 442% YOY INCREASE IN AMAZON UNITS ORDERED
  • 138% YOY INCREASE IN ORGANIC SESSIONS
  • 108% YOY INCREASE IN GOOGLE ADS CONVERSIONS
BelkinsVisit Website →
Autodesk Client-verified
Lead Generation, Email Marketing
SaaS
10K+ Employees
N/A
San Francisco, CA
N/A
  • 35 Appointments booked in 4 months
  • 110% KPI achieved
Titan Growth
Email Marketing
Marketing
11-50 Employees
N/A
San Diego, CA
N/A
  • 84% email open rate
  • 99% email deliverability rate
Sujo
Email Marketing
Media & Broadcasting
11-50 Employees
N/A
Chicago, IL
N/A
  • 100% email deliverability rate
  • 90% campaign engagement rate
1GS Digital AgencyVisit Website →
The Agency Insurance Group Client-verified
Lead Generation, Email Marketing
Insurance
N/A
N/A
Boerne, TX
N/A
  • 10x+ ROI on the engagement
  • 30%+ LinkedIn connection rate and 10+ new appointments
  • 6-figure deal closed within 90 days
Phil Klein Insurance Group
Lead Generation, SEO, Email Marketing
Insurance
11-50 Employees
N/A
West Bloomfield, MI
N/A
  • 1,400+ prospects generated in 60 days
  • Ranking for 177 keywords, up 132 in 60 days
  • 347 LinkedIn conversations started in under 60 days
InteractOneVisit Website →
Island Inn Client-verified
PPC, Email Marketing, SEO
Hospitality
N/A
N/A
Sanibel, FL
N/A
  • Direct website bookings up 13% year over year
  • 36% rise in contact form submissions
  • 20% reduction in cost per acquisition
  • 5% increase in organic traffic
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
Chronos AgencyVisit Website →
Truly Beauty Client-verified
Email Marketing
Beauty
N/A
N/A
Los Angeles, CA
N/A
  • 800% increase in monthly email performance
  • 333% increase in SMS revenue
  • 191% increase in new SMS subscribers
Organifi
Email Marketing
Supplements
51-200 Employees
N/A
San Diego, CA
N/A
  • 234% increase in email revenue in 6 months
  • 8x increase in email campaign openers
  • 75% increase in flow conversion
Cannonball DigitalVisit Website →
Landscape Garden Center Client-verified
PPC, SEO, Email Marketing
Landscaping
51-200 Employees
N/A
Sioux Falls, SD
N/A
  • Google Map visibility +100% (average rank from #5 to #2)
  • 116 locally ranked keywords, 35 in the #1 position
  • Website sessions from Google Ads +57% year over year
  • Project request form submissions +23%
  • Brand searches +13% and overall search visibility +34%
Communications Strategy Group (CSG®)Visit Website →
National MS Society Client-verified
PPC, Content Marketing, Email Marketing
Non Profit
1K-5K Employees
N/A
New York, NY
N/A
  • 3,028,305 impressions across all channels
  • 33,933 landing page visits
  • 11.8% landing page conversion rate
  • 17.08% average email open rate
  • 14,496 Google Ad clicks
SmartBug MediaVisit Website →
Kansas State University Olathe Client-verified
Email Marketing
Education
1K-5K Employees
N/A
Manhattan, KS
N/A
  • 1,360 course registrations
  • $330K total course revenue
  • Email open rate from 11% to 13.39%
Advent Trinity Marketing AgencyVisit Website →
Men Serving God Client-verified
Web Design, Email Marketing, SEO
Non Profit
N/A
N/A
Arlington, TX
N/A
  • 788 form submissions (557 for the 2025 BBQ form)
  • Search clicks 446 (+25%) and 4,148 impressions
  • Facebook: 709 follows and 16,437 media views
  • Instagram: 157 followers (+100%)
  • 91% click-through rate on forms
SoproVisit Website →
Culinary Artistas Client-verified
Lead Generation, Email Marketing
Event Services
1-10 Employees
N/A
San Francisco, CA
N/A
  • 400 high-quality leads generated
  • One lead became an event with 65 attendees and a 9.8 NPS score
Cyclone SocialVisit Website →
Cinda B Client-verified
Social Media Ads, Email Marketing, Branding
Fashion
11-50 Employees
N/A
Fort Wayne, IN
N/A
  • 172% increase in online sales
  • 25% increase in conversion rate
  • 8x growth in website traffic from social media
  • 89% increase in new customer traffic
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%
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

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