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Mailwarm logo

Mailwarm

YCombinator

Prevents your emails from landing in spam.

Mailwarm is the email deliverability company. We help senders get into the inbox and stay there, through products, tools, and services built for both humans and AI agents. ✦ Mailwarm.com: The original email warmup tool. Build sender reputation automatically through real, positive inbox interactions across a large network of mailboxes, with built-in monitoring and deliverability insights. ✦ ThemailX.com: Instant deliverability diagnostics for AI agents and humans. Check all protocols SPF, DKIM, DMARC, Inbox placement and more via MCP, API, or web. Get specific fixes and actions, not just scores. ✦ Mailadept.com: Email deliverability on autopilot. A subscription-based, AI-native service where agents and deliverability experts collaborate to audit your setup, fix issues, and monitor inbox placement continuously. Build reputation with Mailwarm, diagnose problems with themailX, fix and maintain with mailadept. Doing email marketing or cold outreach? Book a call through mailadept.com, we'll show you which one fits.

B2BDubai, United Arab EmiratesSaaSB2BMarketingEmail
Maingen logo

Maingen

YCombinator

Simulating Agents Running Industrial Companies

Maingen builds simulations for industrial operations ($5 trillion slice of the US economy) so frontier labs can train models that actually run power plants, factories, and datacenters.

IndustrialsSan FranciscoArtificial IntelligenceB2BEnergyBig DataAI
Maintouch logo

Maintouch

YCombinator

Make more $$$ with SEO and AEO

We help you turn SEO and AEO into your best growth channel. I grew up working at my family's 9-figure SEO agency and learned how to automate everything. That's what we do for people now.

B2BNew York City, NYMarketing
Makani Science logo

Makani Science

YCombinator

Reinventing respiration monitoring

Makani Science is a medical device company based in Irvine, California. We have created the world's first wireless patch that can accurately and continuously monitor breathing. The company is co-founded by Dr. Michelle Khine and Dr. Michael Chu, two experts in the wearable monitoring space from the University of California, Irvine. The Makani Science system will collect unique breathing waveforms from patients in everyday environments to create the first large database of respiratory patterns associated with different diseases. Data will be collected through systems sold to our initial beachhead market, where we will help improve monitoring safety in patients being sedated for medical procedures. Our long-term goal is to combine machine learning with this database to identify and predict respiratory complications for different patient populations. We have a highly experienced team and will be FDA cleared in our beachhead market within a year.

HealthcareLos Angeles, CAHealth TechMedical Devices
Make School logo

Make School

YCombinator

Make School is redesigning college for the 21st century. Students…

Make School is redesigning college for the 21st century. Our bachelor's degree program combines liberal arts, computer science theory, software development, and character development with an emphasis on preparing students for successful careers as software engineers, product managers, or entrepreneurs. Our alumni work at Facebook, Google, Apple, Snapchat, LinkedIn, Lyft and more. Our college is accessible to students of all backgrounds, 40% are underrepresented minority students and 50% come from low income families. Students pay tuition as a percentage of earnings once they are employed, directly aligning their incentives with ours. Make School is funded by Learn Capital, Y Combinator, Mitch Kapor, Alexis Ohanian, Tim Draper and others.

EducationSan FranciscoEducationCoding Bootcamps
Makeasite logo

Makeasite

YCombinator

Create sites with just a prompt

Makeasite is a website you can use to create websites with just prompts. When you're done, you can easily share it with one click.

ConsumerOrlando, FLConsumerAI
Makrwatch logo

Makrwatch

YCombinator

Scale new user acquisition with YouTube Creators

Makrwatch helps D2C companies scale user acquisition with YouTube creators. Our clients see us as an alternative growth channel to Google/Facebook, by reaching their audience at a more efficient cost per acquisition and obtaining high quality customers that are more engaged. Makrwatch has been growing 100%+ year over year, currently processes 2M-5M in billings and helps creators in over 60+ countries. We are reaching 20 team members in 6+ countries, have been fully remote for the past years and aim to reach 20M in billings with 10,000 sponsored videos within the next 18 months.

New York City, NYWinter 2015ActiveMarketplaceB2BSocial MediaAdvertisingCreator Economy
Malama Health logo

Malama Health

YCombinator

Doula-led holistic support during and after pregnancy

Malama offers doula-led holistic support during and after pregnancy at no cost to patients. Malama is in-network with Aetna, UnitedHealthcare, Anthem, Kaiser, and several Medicaid Managed Care Plans. Malama is backed by the Stanford d.school, Y Combinator (S22), Alpine Investors and more.

HealthcareSan FranciscoHealth TechDigital HealthHealthcareFemtech
Malga logo

Malga

YCombinator

Malga is an API to accept payments with multiple payment providers

Malga gives digital businesses access to multiple payments services through a single integration, and the ability to change between them on a transaction to transaction basis without writing code.

FintechRio de Janeiro, BrazilSaaSPaymentsB2B
Malloc Inc logo

Malloc Inc

YCombinator

AI-driven mobile cybersecurity

Malloc monitors and prevents anyone from recoding or transmitting data from your mobile device without your knowledge. Malloc uses on-device AI to detect zero-click spyware and abnormal activity and blocks any suspicious communication in real time. We sell this to individuals, enterprises and governments that care about their privacy.

B2BNicosia, CyprusPrivacyCybersecurityDefenseAI
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