Companies Using Amazon SES

With 10+ years in web crawling and technographic data analysis, I've examined Amazon SES's growth since its January 2011 launch from a niche AWS service to one of the most widely deployed email infrastructure platforms in the world. This analysis draws on our enrichment of 65,706 companies matched to LinkedIn profiles out of 92,801 detected domains, cross-referenced with AWS's published case studies and 192 G2 reviews, as of our March 2026 crawl.

Growth trajectory

Amazon SES first appeared in our crawl data in August 2012 with 418 active domains. By October 2024, that number hit 101,294, a 242x increase. Steady growth from 2012 to 2017 (about 1,500 domains per year) gave way to sharp acceleration from late 2018 through 2022, adding 10,000+ domains annually. That inflection coincided with enterprise cloud migration and AWS's push to make SES a first-class service. AWS reports SES now processes over 1 trillion emails per year, and the recent dip to 92,801 detected domains by mid-2025 likely reflects detection methodology changes rather than actual adoption decline. SES keeps shipping: Mail Manager (May 2024), Global Endpoints for multi-region failover (December 2024), Email Validation for pre-send address checking (December 2025), and Amazon Q integration for troubleshooting (December 2025).

Sales Signal: The 242x growth over 12 years confirms SES is an expanding market, not a mature one. Companies still migrating to AWS represent fresh prospects. The acceleration during 2018-2022 shows enterprise buyers are adopting SES at scale, not just startups experimenting.

"SES went from a sidecar service that developers added because they were already on AWS to a genuine enterprise email platform. The 101,000-domain peak was earned, not inherited." - Mehmet Suleyman, CEO at TechnologyChecker.io

Customer profile

The size distribution reveals a two-tier market. On one side, 53.9% of SES customers have 1 to 10 employees, the micro-business and solo developer segment that picks SES for its $0.10/1,000-email pricing. On the other side, 2.72% are enterprises with 10,001+ employees, including IBM, McDonald's, Samsung, and Reddit (430M+ monthly users, per AWS's customer page). That 2.72% translates to 1,736 companies, each pushing serious email volume. Age data reinforces the split: 37.58% were founded in the 2010s, while 8.91% predate 1960. Netflix's case study confirms the enterprise pattern. Their SES deployment replaced an in-house SMTP setup, not another cloud email vendor. According to AWS, Netflix achieved 99%+ inbox placement and a 97/100 sender reputation score after migration. Redfin's case study shows similar results: 20M+ daily emails with 99% deliverability. These aren't departmental experiments. They're company-wide infrastructure decisions. Smaller companies get outsized results too: theMarketer, a Romanian marketing platform, cut email sending costs 70% after moving to SES and tripled its client base within two years (per their AWS case study).

Sales Signal: Two distinct prospect pools exist. For startups, the pitch is cost (SES is 3-10x cheaper than SendGrid or Mailgun at volume). For enterprises, the pitch is AWS consolidation, since teams already running compute, storage, and databases on AWS save operational overhead by moving email there too.

Industry and geographic concentration

Software Development leads at 8.09%, followed by IT Services (6.00%) and Technology/Internet (4.87%). Combined, tech industries account for 18.96% of the base. That's expected for an API-first email service. The long tail matters more: Financial Services at 4.09%, Retail at 4.04%, and Hospitality at 1.90% all show SES expanding well past its developer-native origins. Geographically, the United States accounts for 33.2% of enriched companies. The UK (9.2%) and Australia (5.7%) round out the English-speaking core. But the top 13 countries span four continents, including Brazil (4.7%), India (2.8%), and Japan (1.6%). That global spread tracks with SES's multi-region architecture.

Sales Signal: Financial services and healthcare are underpenetrated relative to their size in the global economy. Banks and insurers need transactional email (statements, alerts, compliance notices) and SES is in scope for HIPAA, SOC, PCI, and FedRAMP per AWS's compliance validation docs. Valant Medical Solutions, which serves 2,500+ behavioral health practices, already uses SES for automated patient reminders across email, SMS, and voice (per their published AWS case study). Target HubSpot users in financial services who need a cheaper transactional layer alongside their marketing stack.

Migration patterns

SES shows net positive migration against every tracked competitor. The numbers: 2,507 gained from SendGrid versus 1,440 lost (1.74:1 ratio), and 2,437 gained from Mailgun versus 1,287 lost (1.89:1 ratio). Against Brevo, the ratio is 1.30:1. Against SparkPost, it's 3.14:1. In the past year alone, SES gained 744 companies from Mailgun and 531 from SendGrid. The direction is clear: developers are consolidating email into their existing AWS accounts. SparkPost's 3.14:1 ratio is the outlier, likely tied to Bird's (formerly MessageBird) acquisition pushing customers to re-evaluate.

Sales Signal: The migration data creates two opportunities. First, target companies currently on SendGrid or Mailgun that also use AWS compute, since they're the most likely to consolidate. Second, companies that left SES for SendGrid (1,440 total) did so for a reason, probably SendGrid's better UI and managed deliverability features. That pain point is a selling opportunity for email consultants.

"The migration ratios are net positive across the board, but the real story is the 1,287 companies that left SES for Mailgun. They traded cost savings for better developer experience, and that tells you where SES still needs to improve." - Mehmet Suleyman, CEO at TechnologyChecker.io

Technology ecosystem

The tech stack data tells us what kind of companies run SES. Google Analytics appears on 68.78% of SES customer domains, and GA4 on 49.72%, which is consistent with web-facing businesses. HubSpot at 7.74% is the top marketing automation pairing, suggesting many SES customers use it for transactional email while running marketing campaigns through HubSpot. The Atlassian Cloud overlap at 9.39% stands out. That's higher than any CMS platform, which means a meaningful share of SES domains are internal tools (Jira, Confluence portals) rather than public-facing websites. Drupal at 3.36% and Wix at 1.83% cover the public-facing CMS segment. Intercom (3.23%) and Zendesk (2.09%) confirm SES sits inside a broader customer communication stack.

Sales Signal: The low marketing automation overlap (HubSpot at 7.74%, ActiveCampaign at 2.12%) means most SES customers don't have a marketing email platform yet, or use one that we don't detect. That's an upsell opportunity for marketing tools targeting SES's 92,800-domain base.

G2 review signals

G2's aggregated data (192 reviews, 4.3/5 rating) aligns closely with our crawl observations. The top pro, deliverability (12 mentions), is validated by Netflix's 99%+ inbox placement and Redfin's 99% deliverability rate in their published case studies. Affordability (11 mentions) checks out too, since SES's $0.10/1,000-email pricing is 3-5x cheaper than SendGrid or Mailgun at similar volumes. The top con, initial setup complexity (8 mentions), explains why adoption skews toward teams already familiar with AWS. The console interface criticism (5 mentions) is consistent with SES's developer-first philosophy: the API is the real product, not the dashboard.

Sales Signal: The setup complexity creates a services opportunity. Agencies and consultants that specialize in AWS email configuration can target the 34,351 micro-businesses on SES that likely struggled with initial setup and may need ongoing deliverability optimization.

Key takeaways

1. SES grew 242x in 12 years (418 to 101,294 domains), driven by the enterprise cloud migration wave.

2. Two-tier customer base: 53.9% micro-businesses drawn by pricing, plus 1,736 enterprises (10,001+ employees) consolidating on AWS.

3. Net positive migration against every competitor. The strongest pull is from SendGrid (1.74:1) and Mailgun (1.89:1).

4. Horizontal adoption: no industry exceeds 9%, confirming SES as infrastructure-level tooling.

5. Vendor-verified scale: Netflix (hundreds of millions daily), Redfin (20M+ daily), Grab (34M+ users) prove enterprise readiness.

6. Key vulnerability: setup complexity and poor UI limit adoption beyond AWS-native teams.

Sales applications

Outreach template: "Hi [Name], I noticed [Company] is running SendGrid on AWS infrastructure. Companies like [Peer Company] in your space have cut email costs by 60-80% by consolidating to Amazon SES. Our data shows 2,507 companies made that exact move in the past few years. Happy to share the migration patterns for [Industry] if that's useful."

Targeting strategy: On TechnologyChecker.io, filter for companies using SendGrid or Mailgun that also show AWS infrastructure signals (CloudFront, S3, EC2). Sort by company size 51-200 employees for the sweet spot: large enough to benefit from cost savings, small enough to make migration decisions quickly.

Competitive angle: The 1,440 companies that left SES for SendGrid wanted better UI and managed deliverability. Target SES customers in non-tech industries (hospitality, real estate) who need a less technical solution.

For the full dataset of 92,801 companies using Amazon SES with filtering by industry, size, country, and technology stack, visit TechnologyChecker.io.