YC Email

27 companies · 15 active · 44% AI · most in S10 (2)

AgentMailEmail Inboxes for AI AgentsYC S25San FranciscoStartup →AI

SlashyCursor for EmailYC S25San FranciscoStartup →AI

ArtilLet your agents message teammates and other agentsYC W25LondonStartup →Developer tools

CedarExecute the best sales playbook in industryYC W25San FranciscoStartup →AI

FreestyleThe AI Assistant for GmailYC F24San FranciscoStartup →AI

OdoYour email assistant because you deserve a better morningYC S24San FranciscoStartup →AI

ProxisThe platform for enterprise AI agent automations, starting with email.YC S24San FranciscoStartup →AI

ZaymoTools for AI agents to run marketing for the world's biggest…YC W24LehiStartup →Other

LightmeterManaged Sales Email Delivery For Cold OutreachYC W22BerlinStartup →Other

LoopsEmail sending for software companiesYC W22WashingtonStartup →AIInactive

Forage MailAI that solves email overwhelm. Not another mail app.YC S21New York CityStartup →AI

Compose.aiCut your writing time by 40% with AI-powered autocompleteYC W21CarlsbadStartup →Developer tools

WaypointThe email API built for product teamsYC W21United States; RemoteStartup →AI

MailwarmPrevents your emails from landing in spam.YC S20DubaiStartup →AIInactive

SlikSlik automates your sales.YC S17San FranciscoStartup →OtherAcquired

PolymailEmail productivity platform for business.YC S16Marina del ReyStartup →AI

MailTimeEmails as quick and easy as text messaging.YC W16Hong KongStartup →Other

HiveMarketing automation for event promoters (email, sms, ads, CRM)YC S14KitchenerStartup →OtherInactive

ThreadableMailing lists 2.0. Threadable makes group email less noisy and more…YC W14San FranciscoStartup →OtherAcquired

ZeroMailerEasy mailing listsYC S12Startup →OtherInactive

GliderWe filter distracting emails away from your inbox.YC W12PortlandStartup →OtherInactive

ZenboxBrings dozens of SaaS's (Mailchimp, Stripe, Shopify, Salesforce,…YC S11San FranciscoStartup →Developer toolsAcquired

MailgunEmail API service.YC W11San FranciscoStartup →OtherInactivePost.fmNew email inbox.YC S10LondonStartup →OtherAcquired

RapportiveAdd profiles to email.YC S10San FranciscoStartup →OtherAcquired

reMailEmail search for iPhone. Acquired by Google in Feb 2010.YC W09CAStartup →OtherAcquired

PosterousDead simple blogs by emailYC S08San FranciscoStartup →

Company	Category	Status	Program
AgentMailEmail Inboxes for AI Agentsteam of 10hiringYC S25ActiveAI, Devtools	AI, Devtools	Active	YCS25
SlashyCursor for Emailteam of 3YC S25ActiveAI	AI	Active	YCS25
ArtilLet your agents message teammates and other agentsteam of 2YC W25ActiveAI, Devtools	AI, Devtools	Active	YCW25
CedarExecute the best sales playbook in industryteam of 2YC W25ActiveDevtools	Devtools	Active	YCW25
FreestyleThe AI Assistant for Gmailteam of 3YC F24ActiveAI	AI	Active	YCF24
OdoYour email assistant because you deserve a better morningteam of 2YC S24ActiveAI	AI	Active	YCS24
ProxisThe platform for enterprise AI agent automations, starting with email.team of 3YC S24ActiveAI	AI	Active	YCS24
ZaymoTools for AI agents to run marketing for the world's biggest…team of 19hiringYC W24ActiveAI	AI	Active	YCW24
LightmeterManaged Sales Email Delivery For Cold Outreachteam of 5YC W22ActiveOther	Other	Active	YCW22
LoopsEmail sending for software companiesteam of 10YC W22ActiveOther	Other	Active	YCW22
Forage MailAI that solves email overwhelm. Not another mail app.team of 4YC S21InactiveAI	AI	Inactive	YCS21
Compose.aiCut your writing time by 40% with AI-powered autocompleteteam of 7hiringYC W21ActiveAI	AI	Active	YCW21
WaypointThe email API built for product teamsYC W21ActiveDevtools	Devtools	Active	YCW21
MailwarmPrevents your emails from landing in spam.team of 10YC S20ActiveAI	AI	Active	YCS20
SlikSlik automates your sales.team of 2YC S17InactiveAI	AI	Inactive	YCS17
PolymailEmail productivity platform for business.acquiredteam of 2YC S16AcquiredOther	Other	Acquired	YCS16
MailTimeEmails as quick and easy as text messaging.team of 18hiringYC W16ActiveAI	AI	Active	YCW16
HiveMarketing automation for event promoters (email, sms, ads, CRM)team of 65hiringYC S14ActiveOther	Other	Active	YCS14
ThreadableMailing lists 2.0. Threadable makes group email less noisy and more…team of 2YC W14InactiveOther	Other	Inactive	YCW14
ZeroMailerEasy mailing listsacquiredteam of 2YC S12AcquiredOther	Other	Acquired	YCS12
GliderWe filter distracting emails away from your inbox.team of 2YC W12InactiveOther	Other	Inactive	YCW12
ZenboxBrings dozens of SaaS's (Mailchimp, Stripe, Shopify, Salesforce,…team of 2YC S11InactiveOther	Other	Inactive	YCS11
MailgunEmail API service.team of 51acquiredYC W11AcquiredDevtools	Devtools	Acquired	YCW11
Post.fmNew email inbox.YC S10InactiveOther	Other	Inactive	YCS10
RapportiveAdd profiles to email.acquired2 programsYC S10 +1AcquiredOther	Other	Acquired	YC +1S10
reMailEmail search for iPhone. Acquired by Google in Feb 2010.acquiredYC W09AcquiredOther	Other	Acquired	YCW09
PosterousDead simple blogs by emailteam of 11acquiredYC S08AcquiredOther	Other	Acquired	YCS08

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