San Francisco Startups List

Map of the local innovation industry.
Meet some of the best and newest startups based in San Francisco.

23 email Startups View all

Quality GPTs - Custom designed GPTs for businesses

QualityGPTs

GPTs, personalized for you.
Agency providing easy to use AI tools to small businesses.

Mail2Cloud (MxHero) - enterprise software cloud management email cloud data services

Mail2Cloud (MxHero)

Saves time and money with seamless email attachment management in the cloud
Featured in Gartner's "Cool Vendors in Social Software and Collaboration, 2015" mxHero has engineered true convergence between email (any email) and cloud storage. This convergence unleashes synergies that radically improve any company or user's traditional email ...

MailTime - mobile messaging email

MailTime

The Email Messenger
Our last project Talkbox was a closed network (just like all other messaging apps - Slack, Whatsapp, etc) unable to connect with users outside of the the messenger. We wanted to build something different and open, so MailTime is a messaging service built on top ...

Streak - CRM sales automation email customer support tools

Streak

CRM in your inbox.
Streak lets you manage customers, sales, email support, bug tracking and hiring all inside of Gmail. Customers are using Streak to manage all their business processes from where they do their work - their email. Streak is deeply integrated into the email experience ...

Mailgun - developer apis email developer tools early stage it

Mailgun

Modern Email Platform for Developers
APIs that allow developers and their apps to send, receive, track and store emails effortlessly.

AdStack - performance marketing advertising platforms email email marketing

AdStack

Real-time Email Optimization, Personalization & Analytics Platform
AdStack automatically optimizes emails after they’ve been sent. This helps email marketers: • Save time with automatic email testing • Boost ROI through real-time optimization • Increase relevancy with instant-personalization

Sales Beach - lead generation sales and marketing email

Sales Beach

Prospect Engagement Platform
Sales Beach starts conversations with decision makers. There is no better way to start a sales process with another company than reaching out and introducing yourself. Sales Beach allows you to do this, at scale, in a personalized way that drives engagement and ...

SlideMail - mobile email

SlideMail

An email app that can think
http://techcrunch.com/2015/03/20/slidemail-is-an-intelligent-email-app-for-the-rest-of-us/ SlideMail (YC W15) makes doing email as easy as pressing a button. If someone emails you, "Are you free to meet up next week at 4pm?" SlideMail understands this and all ...

Lowcost Email cheap flights alerts

NowBoarding ✈️

Invite-only mailing list.
We search the best weekend and long-haul flight deals so you can book before everyone else.

boomtrain - mobile big data email personalization

boomtrain

Individually relevant messaging at any scale
Boomtrain is a personalized notification platform that leverages machine learning and predictive algorithms to drive increased clicks, engagement and revenue through customer communications. Our technology surfaces the content that’s most likely to engage any individual ...

Threadable - email

Threadable

Mailing Lists 2.0 (YCombinator W14)
Threadable is a mailing list management solution that makes group email less noisy and more actionable.

Handle - mobile productivity software email task management

Handle

To-dos + Email + Calendar = Focus
Our attention is our most precious resource and we’re wasting it. We could be using it to be better spouses, parents, employees, and friends but instead we’re using it to figure out what needs to get done and too often being diverted to things that don’t matter. ...

Mingly - big data social media platforms email social crm

Mingly

Mingly makes it easy to grow relationships with people across your networks.
Mingly makes it easy to grow relationships with people across your networks. Social networks make us more “connected” than ever, but with contacts and conversations scattered across the web, it’s easy to miss opportunities or fall out of touch. By creating an ...

Tout - sales and marketing business productivity small and medium businesses email

Tout

Sales Communications Platform
ToutApp streamlines communications for Sales professionals by combining engagement, email and CRM data into one seamless real-time feed. Works inside of Outlook, Gmail, iOS, and Salesforce.

Invitation codes

The referral community
Invitation App is a social network where people post their referral codes and collect rewards on autopilot.

Immediately - SaaS sales and marketing business productivity email

Immediately

Sales. Mobile first.
Immediately is mobile sales enablement, designed for the always-on workforce. Sales can no longer be a 9-5 job; over 70% of lost deals are due to slow reaction time. Immediately brings the full sales workflow into one mobile app designed to enable capturing opportunities ...

Composure - SaaS machine learning productivity software email

Composure

Autocomplete for email
Composure lets you write email without losing your flow. Here's how: - As you write email, Composure gives you the phrases and sentences that you need, based on the text you're writing. - We understand the intent of the email you're writing. We find the facts and ...

Paceable - SaaS collaboration productivity software email

Paceable

The Future of Inbox - For Teams
Paceable (previously MailSyncr) enables a private window between team members cc-ed together in an email to chat, add notes, schedule reminders etc in context of that particular email. A powerful feature in email that's missing right now. Also works for group ...

Kontexa - email contact management private social networking professional networking

Kontexa

Unlock the power of your Inbox, address book and calendar
We're building a Semantic Inbox. We're starting with your address book. http://reconcil.me

InboxVudu - deep information technology email

InboxVudu

Artificial Intelligence powered email assistant
InboxVudu is an intelligent email assistant.

Nylas - email

Nylas

The next-generation email platform
Nylas is building a new platform for email-powered apps, starting with simple REST APIs and infrastructure for developers. The company was founded in 2013 by Michael Grinich and Christine Spang, two MIT alums who set out to fix IMAP, MIME, and the fragmented world ...

AwayFind - mobile business productivity email google apps

AwayFind

Priority inbox done right, for businesses
Get away from your inbox. We find your urgent emails. AwayFind monitors your Gmail or Exchange inbox, routing urgent messages automatically to SMS or your iPhone/Android. The typical knowledge worker loses 1/3 of their day to email interruptions. We help over ...

Acompli - SaaS enterprise software mobile enterprise email

Acompli

Acompli allows professionals to take more action with email on mobile.
iPhone Email Just Got a Promotion. Acompli allows professionals to take more action with email on their mobile devices. Leveraging the full capabilities of smartphones, Acompli uniquely combines advanced email, full calendaring, file sharing, predictive search ...

sendwithus - SaaS analytics optimization email

sendwithus

Email Automation API for Enterprise (YC W14)
Sendwithus is a powerful, easy to use dashboard and API that work together to help you design, test, and optimize your transactional and marketing emails. Use our editor to make changes to your templates on the fly, set up A/B tests, and see advanced downstream ...

Mixmax - SaaS sales and marketing business productivity email

Mixmax

Bring the power of the web to email
Mixmax makes email as powerful as web pages by enabling actions like completing purchases, confirming expense reports, scheduling events, and answering surveys—all within an email, no plugins required. Any developer can bring interactive apps into email using Mixmax ...

Mailbox - iphone collaboration email task management

Mailbox

Put email in its place.
Meet Mailbox. We redesigned the inbox to make email light, fast, and mobile-friendly. Quickly swipe messages to your archive or trash. Scan an entire conversation at once with chat-like organization. Snooze emails until later with the tap of a button. It's a ...

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