Insights

Acquisition Opportunity Postbox was acquired by eM Client in October 2024, signaling a potential strategic shift and integration opportunities. This may open cross-sell avenues for eM Client customers and align with integration-friendly workflows.

Small Team Advantage With a lean team (2-10 employees), Postbox likely needs scalable, cost-efficient solutions and rapid deployment. This creates upsell potential for streamlined productivity tools, licensing models, and support packages that fit a small-business budget.

Privacy Focus Postbox emphasizes strong privacy (no email reading, no ad targeting, no data sharing). This positions it well for privacy-conscious enterprises and regulated industries seeking secure email and collaboration tools.

Mac and Windows Cross-platform availability on macOS and Windows allows targeting of mixed environments within organizations, including MSPs and IT departments managing diverse endpoints. Suggest integrations and cross-platform optimization pitches.

Productivity Ecosystem Feature-rich email client with macros, templates, large-file sharing via links, and 3rd-party Labs like OpenPGP. This enables conversations around workflow automation, security enhancements, and enterprise-grade email governance.

Similar companies to Postbox

Postbox Tech Stack

Postbox uses 8 technology products and services including Hotjar, Mailchimp, Hoefler&Co, and more. Explore Postbox's tech stack below.

  • Hotjar
    Analytics
  • Mailchimp
    Email
  • Hoefler&Co
    Font Scripts
  • GSAP
    Javascript Frameworks
  • RxJS
    Javascript Frameworks
  • React
    Javascript Frameworks
  • Google Analytics
    Web Analytics
  • Magnific Popup
    Web Tools And Plugins

Postbox's Email Address Formats

Postbox uses at least 1 format(s):
Postbox Email FormatsExamplePercentage
First@postbox-inc.comJohn@postbox-inc.com
100%

Frequently Asked Questions

What is Postbox's phone number?

Minus sign iconPlus sign icon
You can contact Postbox's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Postbox's official website and social media links?

Minus sign iconPlus sign icon
Postbox's official website is postbox-inc.com and has social profiles on LinkedIn.

What is Postbox's SIC code NAICS code?

Minus sign iconPlus sign icon
Postbox's SIC code is 7372 - Prepackaged Software NAICS code is 5112 - Software Publishers.

How many employees does Postbox have currently?

Minus sign iconPlus sign icon
As of July 2026, Postbox has approximately 6 employees across 3 continents, including AsiaEuropeNorth America. Key team members include Partner: V. H.. Explore Postbox's employee directory with LeadIQ.

What industry does Postbox belong to?

Minus sign iconPlus sign icon
Postbox operates in the Software Development industry.

What technology does Postbox use?

Minus sign iconPlus sign icon
Postbox's tech stack includes HotjarMailchimpHoefler&CoGSAPRxJSReactGoogle AnalyticsMagnific Popup.

What is Postbox's email format?

Minus sign iconPlus sign icon
Postbox's email format typically follows the pattern of First@postbox-inc.com. Find more Postbox email formats with LeadIQ.

When was Postbox founded?

Minus sign iconPlus sign icon
Postbox was founded in 2007.
Postbox logo

Postbox

Software DevelopmentCalifornia, United States2-10 Employees

Postbox is a software development company that provides a desktop email client aimed at boosting productivity and speed. It combines straightforward usability with features to manage large inbox workloads, including advanced search, macros, tagging, and extensive keyboard shortcuts. The client supports professional email creation with pre-canned responses, content blocks, and signatures, and enables fast large-file sharing through links from cloud services, and it runs on macOS and Windows. Based in San Carlos, California, the company operates as a small firm that prioritizes privacy, not reading or storing emails or passwords, and not serving ads or sharing user data with third parties. In October 2024, Postbox was acquired by eM Client, Inc., marking a notable development in its corporate status.

Section iconCompany Overview

Phone number
SIC Code
7372 - Prepackaged Software
NAICS Code
5112 - Software Publishers
Founded
2007
Employees
2-10

Section iconFunding & Financials

  • $1M

    Postbox's revenue is estimated to be in the range of $1M

Section iconFunding & Financials

  • $1M

    Postbox's revenue is estimated to be in the range of $1M

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

© LeadIQ, Inc. All rights reserved.