VendorStacks

Companies using SparkPost

15 companies in the VendorStacks index name SparkPost as part of their email stack in their public web presence. Every match carries the quoted source row it was extracted from — no inference, no fingerprint guessing.

Email

Sample of companies using SparkPost

CompanyUsed for
reserve.comEmail
loyaltylion.comEmail
intercom.ioEmail
goteamup.comEmail
emailoctopus.comEmail
coviu.comEmail
clearcourse.co.ukEmail
tickettailor.comEmail
quiq.comEmail
leadsquared.comEmail

Showing 10 of 15. The full list — with evidence, source URLs and refresh timestamps — comes back from one API call.

curl "https://vendorradar-production.up.railway.app
/v1/prospect?vendor=SparkPost" \
  -H "Authorization: Bearer vr_live_…"
Get an API key — 25 free creditsAPI reference

Commonly appears alongside

Vendors that most often show up in the same stacks as SparkPost.

AWS 15Stripe 10Twilio 9Cloudflare 7Intercom 6Snowflake 6

How this is collected

VendorStacks runs a multi-source extraction pipeline over a company's public web presence: crawling, rendering JavaScript pages and PDFs, and matching a deterministic vendor taxonomy against what the company itself publishes. Nothing is inferred from tracking pixels or guessed from job posts — if we say a company uses SparkPost, we can show you the sentence that says so. How it works →

Most recent refresh in this set: 2026-07-27.