What technologies does Substack use?

Substack uses Cloudflare DNS, Rackspace MailGun, Gmail, Google Apps, Zendesk. View their full technology stack — including all 12 detected tools — on StackWho.

Who is the Director of Engineering of Substack?

John Pignata is the Director of Engineering at Substack. Get verified contact information on StackWho.

Who is the Engineering Manager of Substack?

Aaron Wynn is the Engineering Manager at Substack. Get verified contact information on StackWho.

Where is Substack located?

Substack is based in San Francisco, California, United States.

Substack

Q: What industry is Substack in?

Substack operates in the online media industry.

substack.com

online media

substack.com

San Francisco, California, United States

1001-5000 employees

7000000 revenue

LinkedIn Profile

About Substack

publishing, journalism, writing, newsletters, media, online audio & video media, news, online media

Substack's Tech Stack

AI/ML

Decision Makers at Substack

3 contacts

John Pignata

Director of Engineering

j***@substackinc.com Sign up to view

Aaron Wynn

Engineering Manager

g***@gmail.com Sign up to view

Paul Storm

Chief Marketing Officer

p***@substack.com Sign up to view

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12 technologies detected · 3 decision makers · Emails available

Sales Outreach Angle

Stripe usage indicates active payment processing and likely a SaaS or marketplace model. Finance tools, billing automation, and fraud prevention solutions are highly relevant.

Substack's Position in the StackWho Database

• Substack is 1 of 4,163 online media companies tracked in StackWho.
• 4,156 online media companies in our database have verified decision-maker emails (100% of the cohort).
• 53,147 companies in California are in the StackWho database.
• 24 online media companies are in the 1001-5000 employee range (same size as Substack).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Substack use?

Substack uses Cloudflare DNS, Rackspace MailGun, Gmail, Google Apps, Zendesk, CloudFlare Hosting, and 6 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Substack?

StackWho has verified email addresses for 3 decision makers at Substack. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Substack directly for sales, recruiting, or partnerships.

What industry is Substack in?

Substack operates in the online media industry, headquartered in San Francisco, California, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Substack's contact data?

Yes. StackWho Pro members can export decision maker contact data for Substack and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.