Companies Using Amazon SES

Before writing about Amazon SES, I wanted to pin down what our count measures. A domain counts when one of its DNS TXT records contains amazonses.com. In practice that record is SPF: in our check of the 90 largest companies on the list, 88 name Amazon SES in their SPF record, and so did all 60 domains in a random sample of the live set. Our October 2026 crawl finds 225,942 such domains, 157,610 of them matched to a company, which ranks SES 5th of 73 in Email Marketing with 8.53%.

Growth trajectory

The chart reads 169,461 in June, 203,511 in July, 208,245 in August, 221,278 in September and 225,942 in October. The June to July step of 34,050 is mostly a coverage change. The set of domains we crawl turns over every month, with dead sites out and new ones in, and our detection signals widen over time, so this isn't a like-for-like series. What the line does show is a base that doesn't shrink. 6,139 domains removed SES from their DNS since 16 March 2026, 2.72% of today's count, and that's churn observed in that window, not a lifetime figure.

"An SPF entry says Amazon may send for you. It doesn't say Amazon does. It's cheap to add and easy to forget, which is why this count barely churns." - Mehmet Suleyman, CEO & Co-founder at TechnologyChecker.io

Sales Signal: treat an SES entry as evidence that a team once wired Amazon into its mail, and confirm current sending before you pitch a replacement. Low churn keeps the list usable for months, but it also keeps some former users on it.

What the count can and can't tell you

AWS's own documentation explains the gap. Mail sent through SES uses a subdomain of amazonses.com as its default MAIL FROM domain, so SPF passes without the customer adding anything to their own record. Domain verification runs through DKIM CNAME records, which this rule doesn't read. So the count misses SES users who never added an SPF entry, and it keeps domains that stopped sending but left the entry behind. It measures authorisation, never volume.

Sales Signal: two domains with the same entry can differ by millions of emails a month. Rank SES prospects by company size and industry; the entry alone won't sort them.

Customer profile

45.77% of matched companies with a known size have 1 to 10 employees, and 74.93% have 50 or fewer. Yet 4,896 have more than 1,000 staff, and old firms are well represented: 7.01% were founded before 1960, including Deere (1837), Pfizer (1848) and McDonald's (1955). At large companies the entry often sits on one host. Schlumberger has it on careers.slb.com, next to an entry for SuccessFactors, and LabCorp on patient.labcorp.com, next to Okta. Those are single applications sending through SES, not the company's whole mail system.

Sales Signal: when the entry is on a subdomain, sell to the team that owns that application. A careers or patient portal has its own budget and its own deliverability problems.

Industry and geography

Software Development leads at 7.95%, then IT Services and IT Consulting (6.32%) and Technology, Information and Internet (4.93%), about a fifth of the base together. Financial Services (4.13%), Retail (3.74%) and Real Estate (2.62%) follow, and no industry reaches 8%. The United States has 50,577 matched companies, 32.09% of the total, and the UK, Australia and Canada bring the four big English-speaking markets to 79,852, about half. Brazil (7,976), the Netherlands (5,949), Germany (5,793) and India (4,312) make up much of the rest.

Sales Signal: the tech-heavy core buys on API quality and price. The long tail of retailers, banks and public bodies buys on compliance and support, which is where G2 reviewers say SES falls short.

Overlap with other senders

No pair of email services passes our switching tests on this page, so there's no migration table. The overlap is the story instead. 16,666 domains list both SES and SendGrid, 12,121 list SES and Mailchimp, 10,918 SES and Mailgun, and 6,945 SES and Klaviyo. Of the 17,427 domains ever seen with SES and SendGrid, those 16,666 still have both. Since March 2026, 696 domains stopped showing Mailchimp while keeping SES, against 130 the other way, and 369 dropped Mailgun and kept SES, against 114. A deleted DNS entry isn't proof of a move, so read those as tidy-ups of who's allowed to send.

"Companies don't so much switch to SES as add it. More than 16,000 domains authorise both SES and SendGrid, and a removed entry is more often housekeeping than a decision." - Mehmet Suleyman, CEO & Co-founder at TechnologyChecker.io

Sales Signal: a domain that authorises two or three senders is a consolidation conversation. Pitch the cost of running several providers side by side.

Technology ecosystem

Across the 229,932 live SES domains, Google Analytics runs on 64.61%, WordPress on 32.33% and Elementor on 10.7%. HubSpot is on 8.95% and Salesforce Marketing Cloud Account Engagement on 1.87%. Commerce is a minority: WooCommerce on 5.05%, Shopify on 4.19%, Stripe on 4.09% and PayPal on 4.0%. The stack looks like ordinary business websites more than online stores.

Sales Signal: SES alongside HubSpot is a pairing worth targeting with tools that work across both, such as deliverability monitoring or event tracking that follows a contact from the website into the inbox.

G2 review signals

G2 reviewers credit SES with deliverability (12 mentions), affordability (11), cost-effectiveness and easy integration (9) and reliability (9). The complaints are about getting started and getting help: initial setup (8), limited customer support (6), limited visibility into sent-email logs (5) and an unintuitive console (5). That may explain part of the overlap above, with teams keeping a second sender whose console they find easier next to SES.

Sales Signal: deliverability dashboards, log search and setup services sell into exactly the gaps reviewers name.

Key takeaways

• 225,942 domains authorise SES in DNS, 5th of 73 in Email Marketing at 8.53%.
• The entry is an SPF authorisation: it can't show volume and it outlives use.
• 74.93% of matched companies have 50 staff or fewer, but 4,896 have more than 1,000.
• SES is usually one sender among several: 16,666 domains also list SendGrid.
• No switching corridor passes our tests; removals are small and run both ways.

Sales applications

Targeting: on TechnologyChecker.io, filter SES domains that also show SendGrid, Mailgun or Mailchimp to find multi-sender setups, then narrow by industry and company size.

Outreach template: "Your DNS authorises Amazon SES and [second sender] to send for [domain]. Most of the 157,610 SES companies we've matched are small teams, and many run two senders side by side. We help you [see deliverability across both / consolidate onto one]."

Competitive angle: for a sending API up against SES, price is the wrong fight at $0.10 per 1,000 emails. Setup, support and log visibility, the gaps reviewers flag, are the better one.

You can build a list of Amazon SES domains on TechnologyChecker.io, filtered by industry, size, country and stack, across 225,942 domains and 157,610 matched companies.