Mailwarm

YC S20 · Active · Prevents your emails from landing in spam.

Competitors

Companies closest to Mailwarm
Company	Category	Status	Program
Post.fmShared: email, inboxInactiveOther	Other	Inactive	YCS10
MailgunShared: email deliverability, through, apiAcquiredDevtools	Devtools	Acquired	YCW11
SlashyShared: email, inbox, throughActiveAI	AI	Active	YCS25
AgentMailShared: email, inbox, humanActiveAI, Devtools	AI, Devtools	Active	YCS25

Adjacent

Companies next to Mailwarm
Company	Category	Status	Program
SlikShared: email, marketing, salesInactiveOther	Other	Inactive	YCS17
LoopsShared: emailActiveOther	Other	Active	YCW22
ZaymoShared: email, marketingActiveOther	Other	Active	YCW24
RapportiveShared: email, inbox, networkAcquiredOther	Other	Acquired	YC +1S10
GliderShared: email, inbox, largeInactiveOther	Other	Inactive	YCW12

Also from S20 in AI

All of S20

Company	Category	Status
adynThe first test designed to prevent birth control side effectsActiveAI	AI	Active
AI.FashionAI.Fashion is the AI creative suite for the fashion industry.InactiveAI	AI	Inactive
AkiflowAll your tasks and calendars into an AI-powered productivity appActiveAI	AI	Active
Aquarium LearningWe help ML teams improve their models by improving their datasetsAcquiredAI, Devtools	AI, Devtools	Acquired
AtomicAPI that lets companies embed investment accounts into their servicesActiveAI	AI	Active
Bandit MLBandit ML builds machine learning tools for e-commerce companies.AcquiredAI	AI	Acquired

About Mailwarm

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.

YC batch: S20 · Summer 2020
Status, per YC: Active
Category: AI
Team size: 10
Location: Dubai, Dubai, United Arab Emirates
Checked: 31m ago

YC tags: SaaS, B2B, Marketing, Email

Mailwarm in S20: 209 companies, 28% AI

Mailwarm: questions

Which YC batch was Mailwarm in?

Mailwarm was in Y Combinator's Summer 2020 batch (S20).

Is Mailwarm still active?

Y Combinator lists Mailwarm as active.

Where is Mailwarm based?

Mailwarm lists Dubai, Dubai, United Arab Emirates as its location on YC's directory.

Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.