Companies using Postmark by Wildbit LLC in 2025
As of 2025, 1,709 verified companies use Postmark – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is Postmark by Wildbit LLC?
Postmark by Wildbit, is a delivery platform for application emails. It excels at reliably sending transactional emails, such as password resets, welcome messages, and shipping notifications. It’s widely used by developers and marketing teams to ensure high deliverability and insightful analytics.
Last updated date
Number of Companies using
1,709
The majority are based in the
United States
Most common industry?
Business Services
Postmark’s sample user list in 2025
We have data on 1,709 companies that use Postmark. Our Postmark customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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Postmark users and customers by country
2.6K Companies
2.6K Companies
2.6K Companies
2.6K Companies
Where Postmark Shows Up Most
Postmark is used across a wide range of sectors:
Business Services
Software
Manufacturing
Retail
Custom Software & IT Services
From lean startups to global enterprises, Postmark’s footprint is wide, and that means opportunity.

Tech Stack Database
How It Works
It’s everything you wish outbound was—automated, precise, and scalable.
- Landbase finds and qualifies your ideal prospect data automatically
- Landbase deploys specialized AI agents to generate and run high-converting campaigns
- Landbase executes across all channels, handling all the technical complexity behind the scenes.
- Your pipeline fills up. You get to focus on strategy, not busywork.
Trusted by High-Performing GTM Teams
Join the teams using Landbase to:
- Eliminate manual prospecting
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- Built for SDRs, AEs, RevOps, and GTM Leaders
- Powered by AI. Delivered with Speed
FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is Postmark?
Postmark is a delivery platform for application emails, specializing in transactional emails like password resets, welcome messages, and shipping notifications. It’s offered by Wildbit LLC.
How many companies are using Postmark in 2025?
As of 2025, there are 1,709 verified companies using Postmark.
What type of emails does Postmark handle?
Postmark primarily focuses on transactional emails, such as password resets, welcome messages, and shipping notifications.
What are the key benefits of using Postmark?
Postmark ensures high deliverability and provides insightful analytics for application emails.
Which countries have the most companies using Postmark?
The United States has the highest number of companies using Postmark, followed by United Kingdom, Canada, Australia and Switzerland.