runsonwhat

Sezzle's tech stack

What does Sezzle use?

Sezzle (sezzle.com) uses at least 40 tools we can see from public records, including Vercel for hosting, Microsoft 365 for email and documents, Apollo.io for sales and Zendesk for customer support. Last checked .

“Pay in 4 and Build Credit. Welcome to Sezzle, The Responsible Way to Pay. Start Splitting your purchases into 4 installments over 6 weeks today. It’s our mission to financially empower the next generation of change-makers. Financial freedom is a right, not a privilege. Everyone deserves to be truste”

Industry
Fintech
Size
201–1,000 employees
Based in
Minneapolis, United States
Founded
2016
LinkedIn
Company page
Re-check liveVisit sezzle.com
Tools found
40
Categories
22
Oldest proven tool
Mar 2024
Last checked
Oct 2026

Sezzle's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

3 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

DNS

Application

5 tools, what the product is built with

Frontend

Backend & Database

AI

Payments & Billing

Data & Observability

5 tools, what they measure and store

Monitoring

Analytics

Flags & Experiments

Go-to-market

12 tools, how they find and keep customers

Website & CMS

Marketing

Ads & Pixels

Sales & CRM

Support & Docs

Company Ops

15 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

People & HR

Finance & Legal

Security & Compliance

What changed at Sezzle

Using since

Dates come from the first certificate of the subdomain that points at the tool.

  1. Amazon CloudFront
  2. AppsFlyer

Companies like Sezzle also use

Tools common among companies with a similar stack that we haven't found at Sezzle.

Companies with a stack like Sezzle's

Ranked by shared tools, with rare tools counting more.

More Fintech companies

Other Fintech companies we've checked.

Sezzle tech stack FAQ

What tools does Sezzle use?

We've found 40 tools at Sezzle (sezzle.com). Edge & Hosting: Amazon Route 53, Amazon CloudFront and Vercel. Application: Anthropic, OpenAI and Stripe. Data & Observability: Google Analytics, Sentry and Atlassian Statuspage. Go-to-market: Google Ads, Mailchimp and Zendesk. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 3, 2026.

What cloud does Sezzle run on?

Sezzle uses Vercel for hosting. We found Vercel through custom domain.

What CRM does Sezzle use?

Sezzle uses Apollo.io and Demandbase for sales and CRM. We found Apollo.io through website code.

What email provider does Sezzle use?

Sezzle uses Microsoft 365, Google Workspace and Apple Business for email and documents. We found Microsoft 365 through DNS verification records.

What does Sezzle use for customer support?

Sezzle uses Zendesk for customer support. We found Zendesk through email records.

What payment provider does Sezzle use?

Sezzle uses Stripe for payments. We found Stripe through DNS verification records.

Does Sezzle use Microsoft 365?

Yes. We found Microsoft 365 at Sezzle through DNS verification records. Microsoft 365 is used by 245,233 companies we track.

How does runsonwhat know what Sezzle uses?

We read public traces only: Sezzle's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.