> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-using/smtp-com/ # Companies using SMTP.com SMTP.com is an email delivery service for sending transactional and marketing email through a managed API and relay. Here are the organizations where it was detected, where it is most common and how to reach the people who run it. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Organizations that use SMTP.com include HP Inc., Claro RD, Kohler, Government of Yukon and Huhtamaki. SMTP.com is in the email and productivity category; below are the industries where it is most common, how adoption changes with size and the tools found alongside it. ## What is SMTP.com? SMTP.com is an email delivery service for sending transactional and marketing email through a managed API and relay. It sits in the email and productivity category and is usually owned by engineering and DevOps leaders. ## Which companies use SMTP.com? Organizations where SMTP.com was detected include HP Inc., Claro RD, Kohler, Government of Yukon and Huhtamaki. The table lists a selection of larger ones in alphabetical order; names link to company profiles. | Company | Industry | Size | | --- | --- | --- | | Academia | Primary and secondary education | 2,000 to 5,000 | | Alsa | Transportation, trucking and railroad | 2,000 to 5,000 | | [Auburn University](https://enrich.chat/company/auburn-university/) | Higher education | 10,000 to 25,000 | | Banco de Reservas | Financial services | 2,000 to 5,000 | | BOK Financial | Financial services | 5,000 to 10,000 | | [Claro RD](https://enrich.chat/company/claro-rd/) | Telecommunications | 100,000+ | | Esprit | Apparel and fashion | 2,000 to 5,000 | | [Government of Yukon](https://enrich.chat/company/government-of-yukon/) | Government administration | 10,000 to 25,000 | | [Greene King](https://enrich.chat/company/greene-king/) | Food and beverages | 10,000 to 25,000 | | Guaranteed Rate | Financial services | 5,000 to 10,000 | | [HP Inc.](https://enrich.chat/company/hp-inc/) | Information technology and services | 100,000+ | | [Huhtamaki](https://enrich.chat/company/huhtamaki/) | Packaging and containers | 10,000 to 25,000 | | iFM Holdings | Facilities services | 10,000 to 25,000 | | Irwin Mitchell | Law practice | 2,000 to 5,000 | | [Kohler](https://enrich.chat/company/kohler/) | Mechanical or industrial engineering | 25,000 to 50,000 | | Leadway | Financial services | 2,000 to 5,000 | | NES Fircroft | Staffing and recruiting | 2,000 to 5,000 | | OneDigital | Management consulting | 2,000 to 5,000 | | ORYX AC & Home Appliances | Electrical and electronic manufacturing | 5,000 to 10,000 | | [RSK Group](https://enrich.chat/company/rsk-group/) | Environmental services | 10,000 to 25,000 | | Samuel, Son & Co. | Mechanical or industrial engineering | 2,000 to 5,000 | | SKY Airline | Aviation and aerospace | 2,000 to 5,000 | | [Snap-on](https://enrich.chat/company/snap-on/) | Machinery | 10,000 to 25,000 | | Sorenson | Telecommunications | 2,000 to 5,000 | | Telekom Romania Mobile | Telecommunications | 2,000 to 5,000 | | TOD'S Group | Luxury goods and jewelry | 2,000 to 5,000 | | TT Electronics | Mechanical or industrial engineering | 2,000 to 5,000 | | Visionet Systems | Information technology and services | 5,000 to 10,000 | | [Weichert, Realtors](https://enrich.chat/company/weichert-realtors/) | Real estate | 10,000 to 25,000 | | [Werner Enterprises](https://enrich.chat/company/werner-enterprises/) | Transportation, trucking and railroad | 10,000 to 25,000 | ## Do larger companies use SMTP.com more? For each size range, the column shows the share of listed organizations where SMTP.com was detected. **Figure: SMTP.com by company size.** Six columns, one per size range from 2,000 to over 100,000 employees, showing the share of organizations where SMTP.com was detected: 2-5K 1%, 5-10K 0%, 10-25K 0%, 25-50K 0%, 50-100K 0%, 100K+ 1%. *Share of listed organizations in each size range where SMTP.com was detected.* ## What tools go with SMTP.com? Among the organizations that use SMTP.com, these tools stand out: each is detected more often alongside SMTP.com than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools that stand out among SMTP.com users.** Bars for the share of SMTP.com users that also use each tool, with a tick for the share across all listed organizations: HubSpot 27% against 13%, SendGrid 25% against 9%, Mailchimp SPF 23% against 6%, WP Engine 14% against 7%, Gravity Forms 12% against 7%, AdRoll 11% against 3%, Mandrill (Mailchimp) 11% against 6%, Mailjet 11% against 5%. *Share of organizations using SMTP.com where each tool was also detected. The tick marks the share across all listed organizations.* [HubSpot](https://enrich.chat/companies-using/hubspot/)[SendGrid](https://enrich.chat/companies-using/sendgrid/)[Mailchimp SPF](https://enrich.chat/companies-using/mailchimp-spf/)[WP Engine](https://enrich.chat/companies-using/wp-engine/)[Gravity Forms](https://enrich.chat/companies-using/gravity-forms/)[AdRoll](https://enrich.chat/companies-using/adroll/)[Mandrill (Mailchimp)](https://enrich.chat/companies-using/mailchimp-mandrill/)[Mailjet](https://enrich.chat/companies-using/mailjet/) ## How do you reach the people who run SMTP.com? The tool tells you what a company already runs; the people to talk to are usually engineering and DevOps leaders. Pick an account from the table, then ask your AI agent for them. ```text Use www.enrich.chat to find the engineering and DevOps leaders at [company], with titles and verified work emails ``` Check any other company with the free [tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/), or find a company's [email format](https://enrich.chat/tools/email-format-finder/). ## Frequently asked questions ### What companies use SMTP.com? Organizations where SMTP.com was detected include HP Inc., Claro RD, Kohler, Government of Yukon and Huhtamaki. The page lists a selection of larger ones with links to their profiles. ### Which industries use SMTP.com most? SMTP.com is used across a range of industries. ### How is SMTP.com usage detected? From public signals: code and tags on a company's website, the HTTP headers its servers send, and DNS records. A detected tool shows it was seen, not what the company pays for it. ### Who should I contact at a company that uses SMTP.com? Usually engineering and DevOps leaders. Ask your AI agent to use www.enrich.chat to find people in those roles at the account, with verified work emails. ## Try this prompt Find the people who run SMTP.com ```text Use www.enrich.chat to find the engineering and DevOps leaders at [company], with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Companies using Microsoft 365](https://enrich.chat/companies-using/microsoft-365/) - [Companies using Microsoft Outlook](https://enrich.chat/companies-using/microsoft-outlook/) - [Companies using Amazon SES](https://enrich.chat/companies-using/amazon-ses/) - [Companies using Google Workspace](https://enrich.chat/companies-using/google-workspace/) - [Companies using Gmail](https://enrich.chat/companies-using/gmail/) - [Companies using SendGrid](https://enrich.chat/companies-using/sendgrid/) - [Companies using Mailchimp SPF](https://enrich.chat/companies-using/mailchimp-spf/) - [Companies using Mandrill (Mailchimp)](https://enrich.chat/companies-using/mailchimp-mandrill/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)