Best Email Marketing Agencies for Enterprise Business (2026) – Ranked by Case Studies
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
F5 Client-verified
Lead Generation, Email MarketingTechnology5K-10K EmployeesN/ASeattle, WAN/A- 4X increase in MQLs
- 62% increase in website visits
- 75% increase in form submits
- 130 processes streamlined
Lead Generation, Email MarketingHealthcare10K+ EmployeesN/AParsippany, NJN/A- $200M+ annual pipeline impact
- 2X lead volume growth
- 24+ countries supported
- 200+ tickets managed a year
National MS Society Client-verified
PPC, Content Marketing, Email MarketingNon Profit1K-5K EmployeesN/ANew York, NYN/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
Kansas State University Olathe Client-verified
Email MarketingEducation1K-5K EmployeesN/AManhattan, KSN/A- 1,360 course registrations
- $330K total course revenue
- Email open rate from 11% to 13.39%
Autodesk Client-verified
Lead Generation, Email MarketingSaaS10K+ EmployeesN/ASan Francisco, CAN/A- 35 Appointments booked in 4 months
- 110% KPI achieved
Email Marketing, PersonalizationNon Profit10K+ EmployeesN/AAlexandria, VAN/A- 59% of all donations met the suggested amount
- 64% of donors gave an amount higher than their previous average donation
- 85% of all donations from the Giving Tuesday emails met/exceeded average
Web Development, Email MarketingFood & Beverage10K+ EmployeesN/AFlorenceville, CanadaN/A- 80% of the sales force has logged in
- 91% download increase
- 163% increase in searches
Email Marketing, PersonalizationRetail10K+ EmployeesN/AZaandam, NetherlandsN/A- 73% positivity ratio
- 40% higher click rate on vegetarian clients on recipe slider
- 35% click rate in high-budget segment clients on 'excellent' products
- 20% higher sentiment than average performance
- 70% positivity among loyal customers
PPC, Email MarketingInsurance10K+ EmployeesN/AToronto, CanadaN/A- Website visits +73%
- Display ad CTR 500% above industry average
- Benefits sales ~30% over annual goals
Email Marketing, Content MarketingInsurance10K+ EmployeesN/ANew York, NYN/A- Visits to the agent portal +620%
- Email open rates above 50%
- ~9 million consumer impressions through agents
Email Marketing, Content MarketingInsurance10K+ EmployeesN/ANew York, NYN/A- 74% likely to open another email
- 67% more likely to quote Travelers auto policies
- 66% said it changed how they think about Travelers
- Six-episode animated email series
Lead Generation, Email Marketing, PPCManufacturing1K-5K EmployeesN/ANashville, TNN/A- #1 ad recall rate in the industry two years running
- 281 new marketing-qualified leads
- 10,000 page views across 3 new websites in month one
- 100% growth in social media across all platforms
Branding, Email Marketing, Lead GenerationManufacturing5K-10K EmployeesN/AChicago, ILN/A- 70% lift in sales
- New sales cycle of 26 days, compared to 24 months
- More RFQs in the first 3 months than the entire previous year
Email Marketing, Lead Generation, Content MarketingManufacturing10K+ EmployeesN/ABenton Harbor, MIN/A- $2.1 million in additional product sales in the first year
- 30,000+ MQLs, 68% deemed qualified by sales reps
- Leads +57% year over year
- 10% average CTR, nearly 5x the industry average
PPC, Email MarketingLogistics1K-5K EmployeesN/AChicago, ILN/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%
Social Media Ads, Email Marketing, CRORestaurant5K-10K EmployeesN/AIrvine, CAN/A- 3X more landing page views than ever before
- 10K new email signups
- 1K+ uses of hashtag across social channels
- 15K+ engagements across social media channels
PPC, SEO, CRO, Email Marketing, SMS MarketingSaaS1K-5K EmployeesN/AMountain View, CAN/A- 500% Increase From Trial Sign-Ups to Active Users
- 45% Increase in Trial Sign-Ups Using Persona-Specific Search Ads
- 100% NPS Score
PPC, SEO, CRO, Email Marketing, SMS MarketingHealthcare1K-5K EmployeesN/ANew York, NYN/A- 113% Increase in Provider Qualified Leads
- 149% Increased Conversion Rate
- 58% Increase in Employee Headcount
- 30% Increase in Patient Registrations MoM
Lead Generation, Email MarketingTechnology10K+ EmployeesN/AStamford, CTN/A- 67% conversion into sales qualified opportunities in July
- 25% month-over-month increase in lead volume
- Most profitable month of the partnership
Lead Generation, Email MarketingManufacturing5K-10K EmployeesN/ABristol, CTN/A- 52 leads in 12 months
- About 4 high-caliber leads per month
Email Marketing, Content MarketingFinance1K-5K EmployeesN/AAustin, TXN/A- 35% open rate, up from 22%
- 12% click-to-open rate, up from 2%
- 120 follow-up calls generated
- 2 speaking invitations from referral partners
Content Marketing, Community Engagement, Email MarketingStorage1K-5K EmployeesN/APhoenix, AZN/A- +77% organic blog traffic QoQ
- +81% referral traffic from social channels
Web Design, Email MarketingTechnology10K+ EmployeesN/APhoenix, AZN/A- Elevation created Avnet Premier, the exclusive one-stop portal for the latest information that immediately and successfully closed sales and…
Content Marketing, Email Marketing, BrandingTechnology10K+ EmployeesN/ARedwood City, CAN/A- Elevation improved the editorial consistency and brand compliance for email content across Equinix worldwide.
- Creative, relevant campaign themes focus and energize Equinix’s internal team and are starting to increase click rates.
Lead Generation, Email Marketing, Social Media AdsTechnology10K+ EmployeesN/AFrankfurt, GermanyN/A- +354% nurturing email click-through rate
- 33.3% nurturing email click rate and 32.1% open rate
- First closed deal attributed to the program
- 100%+ return on ad spend and on combined agency and software spend
- Positive ROAS within the first 6 weeks
Email MarketingWellness1K-5K EmployeesN/ANew York, NYN/A- 1,900+ email templates developed
- 60+ new templates produced every month
- 8-hour turnaround on urgent templates
- Email template migration from SFMC to Braze
- 2+ year partnership with a dedicated team
Email MarketingFashion1K-5K EmployeesN/ABad Zurzach, SwitzerlandN/A- Email became the top source of last-click revenue (+40% YoY)
- 30x ROI across 5 additional international markets
- Email a #1 or #2 revenue driver in each market
Email Marketing, PPC, Social Media AdsEducation1K-5K EmployeesN/AKearney, NEN/A- 700 Average leads per month
- 19% Increase in out-of-state enrollments
- 2x Higher Search Marketing ad CTR than industry average
CRM, Email Marketing, PersonalizationConsumer Electronics10K+ EmployeesN/ASuwon, South KoreaN/A- 4+ Years as partners
- 76+ Campaigns
- 1,000+ Assets delivered per year
Email MarketingFootwear1K-5K EmployeesN/ASeattle, WAN/A- Revenue per delivery increased by 32%
- Overall revenue increased by 9%
- Click rate 20% higher than standard messages
Email Marketing, SEOConsumer Electronics1K-5K EmployeesN/ASan Jose, CAN/A- 25.47% Increase in Users
- 27.15% Increase in Sessions
- 8.81% Increase in New Users
- 25% Increase in Users
- 24.34% Increase in Users
Email Marketing, Web DevelopmentInsurance10K+ EmployeesN/ANew York, NYN/A- Integrated email nurture system with microsites per partner nonprofit
- Warm lead pipeline from special-needs webinar series
Email MarketingRetail1K-5K EmployeesN/AStockholm, SwedenN/A- Driving 15% AOV Increase with Personalization and Marketing Automation
- How Byggmax increased average order value by 15% using personalized email automation across a large-scale omnichannel retail setup
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