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Developer tools

Mailgun

Mailgun is a developer-focused email delivery platform that empowers companies to send, receive, and track transactional and marketing emails through an API. Founded in 2010, Mailgun became a Y-Combinator success story later acquired by Rackspace. In February 2017, Mailgun spun back out as a standalone business focused on building best-in-class email deliverability solutions. We are headquartered in San Antonio with remote teams in San Francisco and Austin. Customers like Slack, Lyft, Github, an

sources
1
Evidence entries preserved.
affiliations
1
Y Combinator
competitors
6
Mapped from High Signal graph features.
status
generated
D1 lookup
last updated
2026-07-15
16:41 UTC
source evidence
Why this company exists here

Y Combinator

yc-company-directory #3290

Mailgun is a developer-focused email delivery platform that empowers companies to send, receive, and track transactional and marketing emails through an API. Founded in 2010, Mailgun became a Y-Combinator success story later acquired by Rackspace. In February 2017, Mailgun spun back out as a standalone business focused on building best-in-class email deliverability solutions. We are headquartered in San Antonio with remote teams in San Francisco and Austin. Customers like Slack, Lyft, Github, an

source
generated read
High Signal interpretation

Mailgun is classified as Developer tools from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.

offline extraction
Product facets
APIcompanies
mapping method
Similarity graph

Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.

discovery cluster

Companies similar to Mailgun

Developer tools · 6 peers

A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.

Lob

match 104

Lob provides the building blocks for developers to automate the offline world. Enterprise companies use Lob’s suite of APIs to mail fully dynamic and personalized customer communications with print media. We provide insight into deliverability with piece-by-piece tracing and utilize our proprietary Print Delivery Network to streamline production across fully redundant nodes all over the country. Founded in 2013 and based in San Francisco, Lob is venture backed by Y Combinator, Polaris Partners,

shared extracted concept terms: companie; shared product terms: developer, companie, customer, deliverability; shared product theme: developer infrastructure, sales and marketing; same category: Developer tools; shared affiliation: Y Combinator

Svix

match 86

Svix is the enterprise ready and open source webhooks service. Webhooks are a pain. Developers need to worry about deliverability, retries, monitoring and security. All of which are different for webhooks compared to the rest of the stack. We turn all of that into a simple API call. Svix is sending billions of webhooks for customers both large (Fortune 500) and small (startups), and is backed by Y Combinator, Andreessen Horowitz (a16z), Aleph, and founders and CTOs of companies such as Github, P

shared product terms: developer, companie, send, api; shared product theme: developer infrastructure, sales and marketing; same category: Developer tools; shared affiliation: Y Combinator

Alpaca

match 64

Alpaca is an API infrastructure and licensed financial services company that allows developers and businesses to offer stock and crypto investing to their end-customers. We work with more than 100 companies across the globe to enable their investing products, and our mission is to provide financial services to everyone on the planet. Alpaca’s globally distributed team consists of developers, traders, and brokerage business specialists and backed by a group of well-capitalized investors including

shared extracted concept terms: api; shared product terms: api, developer, customer, companie; shared product theme: developer infrastructure, sales and marketing; same category: Developer tools; shared affiliation: Y Combinator

Enveloop

match 61

A developer-focused message builder and API that makes it easy to send emails and texts from your app using one simple implementation. We’re doing for mailer libraries what Prisma does for ORMs.

shared extracted concepts: api; shared product terms: developer, focus, api, send; shared product theme: developer infrastructure; same category: Developer tools; shared affiliation: Y Combinator

Weekend (fmr. Volley)

match 41

Weekend builds the best AI games and entertainment experiences for TVs. Popular Weekend games include Song Quiz, Jeopardy!, and Wheel of Fortune, and Wit's End. Weekend was founded by Max Child and James Wilsterman and is headquartered in San Francisco.

shared product terms: best, found, headquarter, san; shared affiliation: Y Combinator

Awesometalk

match 41

Awesometalk is based out of San Francisco. We provides simple, free video calling. We are insanely focused on making communication simple. We don’t like logging in, remembering passwords, or teaching our parents how to use Skype. Don't suffer the "add me on Skype dance" anymore!

shared product terms: out, san, francisco, focus; shared affiliation: Y Combinator