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Postmark
What Does Postmark Do?
Postmark is a fast and reliable transactional email delivery service built for developers and product teams. It focuses on getting important application-generated emails like password resets, welcome emails, and invoices to recipients' inboxes quickly and dependably. Known for its high deliverability rates, detailed analytics, and developer-friendly API, Postmark helps businesses ensure their critical communications reach customers. In 2022, Postmark was acquired by ActiveCampaign, a leader in customer experience automation, to enhance ActiveCampaign's transactional messaging capabilities and provide Postmark users with access to a broader suite of marketing and sales automation tools.
Where Is Postmark's Headquarters?
HQ Function
Serves as the central hub for ActiveCampaign's global operations, including product development for Postmark, marketing, sales, and support, driving the company's customer experience automation platform.
Notable Features:
Modern office space located in a prominent downtown Chicago building, designed to foster collaboration, innovation, and employee well-being with open layouts and various amenities.
Work Culture:
ActiveCampaign fosters a customer-obsessed, collaborative, and growth-oriented work culture. The integration of Postmark aims to blend Postmark's strong developer-centric and quality-focused ethos with ActiveCampaign's dynamic and rapidly scaling environment.
HQ Significance:
The Chicago headquarters represents ActiveCampaign's significant presence in the tech and SaaS industry. For Postmark, being part of ActiveCampaign provides access to greater resources and a wider market, while its specialized expertise strengthens ActiveCampaign's offerings.
Values Reflected in HQ: The headquarters likely reflects ActiveCampaign's values such as customer success, innovation, iteration, and teamwork, now incorporating Postmark's dedication to reliability and developer experience.
Location:
As part of ActiveCampaign, Postmark's transactional email services are supported by a global infrastructure and distributed team. ActiveCampaign maintains offices in North America (Chicago, Indianapolis), Europe (Dublin), and Australia (Sydney), along with global data centers. This worldwide presence ensures high availability, fast email delivery speeds for Postmark users, and localized support for its international customer base, enabling businesses everywhere to leverage powerful transactional email and customer experience automation tools.
Street Address:
1 North Dearborn Street, 5th Floor
City:
Chicago
State/Province:
Illinois
Country:
USA
Where Else Does Postmark Operate Around the World?
Indianapolis, Indiana, USA
Address: ActiveCampaign, 55 Monument Cir, Indianapolis, IN 46204, USA
Strategic location for talent acquisition in the Midwest tech scene and supports ActiveCampaign's North American customer base.
Dublin, Ireland
Address: ActiveCampaign, Stephen Court, 18-21 St Stephen's Green, Dublin 2, Ireland
Key base for European market expansion, customer support, and data compliance within the GDPR framework.
Sydney, Australia
Address: ActiveCampaign, Level 5, 50 Carrington Street, Sydney NSW 2000, Australia
Facilitates growth and support for ActiveCampaign's customer base in Australia, New Zealand, and other APAC countries.
Buying Intent Signals for Postmark
Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.
Who's Leading Postmark? Meet the Executive Team
As of April 2025, Postmark' leadership includes:
Who's Investing in Postmark?
Postmark has been backed by several prominent investors over the years, including:
What Leadership Changes Has Postmark Seen Recently?
ActiveCampaign has seen some leadership adjustments to support its growth. While specific Postmark-focused executive changes post-acquisition are integrated into ActiveCampaign's structure, key appointments at ActiveCampaign level continue to shape the overall strategy. No major widely publicized exits from the core leadership team have been noted recently.
New Appointments:
What Technology (Tech Stack) Is Used byPostmark?
Discover the tools Postmark uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
Postmark Email Formats and Examples
ActiveCampaign, the parent company of Postmark, primarily uses email formats common in tech companies. The most prevalent format seems to be [first_initial][last]@activecampaign.com or [first].[last]@activecampaign.com.
[first_initial][last]@activecampaign.com or [first].[last]@activecampaign.com
Format
jdoe@activecampaign.com or jane.doe@activecampaign.com
Example
80%
Success rate
What's the Latest News About Postmark?
ActiveCampaign Blog • May 11, 2022
Postmark is joining ActiveCampaign!
ActiveCampaign announced its acquisition of Postmark, a leading transactional email service, and DMARCian. This strategic move aims to enhance ActiveCampaign's platform by integrating Postmark's robust email deliverability and developer-focused tools, alongside DMARCian's email authentication solutions....more
ActiveCampaign Press Release • February 7, 2023
ActiveCampaign Appoints Sameer Kazi as President
ActiveCampaign announced the appointment of Sameer Kazi as its new President. Kazi brings extensive experience from his previous role as CEO of Cheetah Digital and will focus on scaling ActiveCampaign's operations and growth....more
Postmark Blog • October 25, 2023
An update on DMARCian: Sunsetting the DMARCian product on January 31, 2024
Postmark announced that its DMARC monitoring tool, DMARCian, will be sunsetted on January 31, 2024. Users are advised to migrate to alternative DMARC services. This decision allows the team to focus more on core Postmark features....more
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