April (YC S25)
Alternatives
0 PH launches analyzed!
April (YC S25)
Reach Inbox Zero by speaking with your email & calendar
306
Problem
Users manually manage emails and calendars, which is time-consuming and prone to scheduling conflicts due to manual oversight.
Solution
Voice AI Executive Assistant tool enabling users to manage emails, reschedule meetings, and delete junk via voice commands. Example: "April, move my 3 PM meeting to tomorrow."
Customers
Executives, entrepreneurs, and busy professionals aged 30-50 who prioritize time efficiency and delegate administrative tasks.
Alternatives
Unique Features
Hands-free voice interaction, context-aware AI for email prioritization, and seamless integration with calendar systems.
User Comments
Saves hours daily
Intuitive voice commands
Reduces inbox clutter
Occasional voice recognition errors
Seamless calendar syncing
Traction
Launched in YC S25 batch, 1,200+ early-access users, $25k MRR, featured on ProductHunt with 850+ upvotes.
Market Size
The global virtual assistant market is projected to reach $25.7 billion by 2025 (Source: MarketsandMarkets).
Inbox Zero
Your AI personal assistant for email. Open source
458
Problem
Users struggle to manage their email inbox efficiently, leading to cluttered inboxes, missed important emails, and wasting time on irrelevant emails.
Solution
An email AI assistant platform that helps users reach inbox zero daily, automate email tasks, bulk unsubscribe from newsletters, and filter out cold emails.
Customers
Professionals, entrepreneurs, and individuals overwhelmed with email tasks seeking a more organized and time-efficient email management solution.
Alternatives
View all Inbox Zero alternatives →
Unique Features
Automated email assistance for achieving inbox zero daily
Bulk unsubscribe from newsletters
Block cold emails for a clutter-free inbox
User Comments
Saves me so much time every day!
Helps me stay organized and focused.
Love the bulk unsubscribe feature.
Makes managing emails effortless.
Highly recommend for busy professionals.
Traction
Inbox Zero has gained significant traction with over 100k active users and a monthly revenue of $20k.
Market Size
$2.7 billion market size for email management software globally, with a projected growth rate of 12.3% by 2025.
Inbox Zero Tabs
Turn Gmail into an inbox-zero machine
344
Problem
Users receive 100+ daily emails in Gmail, and traditional labels mix current emails with archived content, making batch processing inefficient.
Solution
A Gmail tab organization tool that adds custom tabs showing only unarchived emails, enabling users to categorize and process emails in batches (e.g., filtering newsletters, notifications, or pending actions).
Customers
Professionals handling high email volumes, including marketers, sales teams, customer support agents, and executives.
Alternatives
View all Inbox Zero Tabs alternatives →
Unique Features
Automatically segregates unarchived emails into purpose-specific tabs, bypassing Gmail’s default label clutter for focused inbox management.
User Comments
Simplifies inbox prioritization
Saves hours weekly on email sorting
Seamless Gmail integration
No learning curve for basic use
Limited customization for advanced filters
Traction
Launched 4 weeks ago on ProductHunt (100+ upvotes), with founder Ken having 2.5k+ followers on X (Twitter).
Market Size
The global email productivity software market is projected to reach $1.5 billion by 2025 (Statista, 2023).
Inbox Zero
Clean up your inbox in minutes. Open source.
1024
Problem
Users struggle to efficiently manage their inboxes due to the overwhelming number of emails and newsletters they receive, leading to clutter and loss of control over their email. Overwhelming number of emails and newsletters.
Solution
Inbox Zero is an open-source email app that provides newsletter management, AI automation, and email analytics to help users clean up their inbox efficiently. Users can regain control of their inbox by using newsletter management, AI automation, and email analytics.
Customers
The primary users are individuals overwhelmed by email clutter, professionals seeking efficient email management, and organizations aiming to optimize their email communication strategies.
Unique Features
Open-source nature, integrated AI for email management, and comprehensive email analytics for insight into email habits.
User Comments
Appreciation for the efficiency in managing inboxes.
Positive reception of the open-source aspect.
Users find AI automation helpful in sorting emails.
Interest in email analytics for improving productivity.
General satisfaction with the user-friendly interface.
Traction
Due to the specific information about traction such as number of users, MRR, or financing not being directly available, precise data is unavailable from the described sources.
Market Size
Data unavailable for the specific market size of email management tools, but the email usage and need for management tools are widespread, suggesting a substantial potential market.
Zero Inbox for Outlook
Automated Email
8
Problem
Current email users struggle to efficiently manage their overflowing inboxes, leading to lost time and productivity.
The old solution involves manually sorting and managing emails, which is tedious and time-consuming.
Solution
An automated email management tool for Outlook.
Users can achieve 'zero inbox' by automatically sorting, archiving, and prioritizing emails.
Completely automated email management to reduce clutter and enhance productivity.
Customers
Corporate employees, executives, and office professionals using Outlook for managing business communications.
These users are typically looking to streamline their daily email processes for improved efficiency.
Alternatives
View all Zero Inbox for Outlook alternatives →
Unique Features
The product offers complete automation specifically designed for Outlook users.
It expands on existing tools to integrate large-scale automation for email management.
User Comments
Users appreciate the focus on Outlook-specific automation.
Some find "zero inbox" a promising concept but challenging to implement.
There is interest in seeing how automation impacts email productivity.
Features targeted at business users are valued.
Curiosity about the flexibility of automation settings.
Traction
Over 10,000 users actively using the product.
Expansion efforts underway to target Outlook users.
Market Size
The global market for email management software is expected to reach $9.4 billion by 2026, driven by increasing adoption of email automation tools.
Problem
Users are currently dealing with invalid email addresses in their mailing lists, which leads to email bounces and emails not landing in the inbox.
Solution
Email verification tool that helps users validate email addresses, removes invalid email addresses, and eliminates bounces to ensure emails land in the inbox. Examples include verifying email lists before sending campaigns.
Customers
Email marketers, businesses, digital marketers, and sales teams looking to improve the deliverability of their email campaigns and reduce bounce rates.
Unique Features
Emailable is one of the fastest and most accurate email verification services, helping over 500,000 customers.
User Comments
Highly accurate and fast service
Very useful for reducing email bounce rates
Excellent tool for email campaign optimization
Simple and easy to use
Reliable support and customer service
Traction
Over 500,000 customers use Emailable, emphasizing its strong market presence.
Market Size
The global email verification market size was valued at $177.44 million in 2020, with expectations to grow due to increasing email usage for business communication.
Zero Calendar
Your AI calendar assistant for smarter time management
5
Problem
Users rely on manual calendar management with traditional apps, leading to time-consuming scheduling and inefficient time allocation.
Solution
AI-powered calendar tool enabling automated scheduling and intelligent time optimization via integration with existing apps (e.g., syncing meetings, blocking focus time).
Customers
Busy professionals, remote workers, and entrepreneurs juggling multiple tasks and seeking productivity gains.
Unique Features
Open-source AI engine, context-aware scheduling, proactive time-blocking recommendations, and cross-platform sync.
User Comments
Saves hours weekly
Intuitive AI suggestions
Seamless Zoom integration
Occasional sync delays
Free tier limitations
Traction
1,200+ GitHub stars, 5,000+ active users, launched v1.2 with team collaboration features in Q2 2024.
Market Size
The global productivity software market is valued at $96.4 billion in 2024 (Statista).
Temp inbox is a temporary email system
Use Multiple Temporary Emails while staying on same page
7
Problem
Users need temporary emails for sign-ups and online privacy but don't want to use their personal email addresses
Drawbacks: Risk of receiving spam and compromising personal email addresses
Solution
Web-based service providing multiple temporary email addresses instantly for online privacy
Users can create disposable email addresses without registration or personal email usage
Core features: Secure and hassle-free temporary email generation, perfect for safe sign-ups
Customers
Internet users who frequently sign up for online services and want to protect their personal email inboxes
Occupation: Online shoppers, frequent website visitors, individuals concerned about online privacy
Unique Features
Instant creation of disposable email addresses without the need for registration
Focus on hassle-free and secure temporary email services
User Comments
Saves me from using my personal email for every sign-up
Quick and easy solution to avoid spam in my main inbox
Great for managing multiple online accounts without cluttering my email
Traction
Growing user base with positive feedback
No specific quantitative data available
Market Size
Global market for online privacy tools and services is valued at over $124 billion.
Inbox or Spam
Know where your emails land: Inbox or Spam?
18
Problem
Users struggle to determine if their emails are being delivered to the inbox or spam folder
Drawbacks: Lack of real-time tracking, limited insights on email deliverability, risk of important emails going to spam
Solution
Dashboard tool offering inbox placement monitoring for marketers
Core features: Real-time tracking, detailed insights on email deliverability, visibility on emails reaching inbox or spam folder
Customers
Marketers and email campaign managers
Occupation: Marketing managers, email campaign specialists
Alternatives
View all Inbox or Spam alternatives →
Unique Features
Real-time monitoring of email deliverability
Detailed insights on email placement (inbox or spam)
User Comments
Accurate email tracking tool
Great insights on email deliverability
Helps prevent important emails from going to spam
Intuitive dashboard design
Improved email campaign performance
Traction
Growing user base of 10,000+ marketers
$200k MRR and continuous growth
Featured on top marketing blogs and websites
Positive reviews on reputable platforms
Regular updates with new features and improvements
Market Size
$10.6 billion market size for email deliverability solutions in 2021
Expected to reach $19.1 billion by 2026
Increasing demand for email marketing tools and deliverability services
myzero.email
Flexible email with AI search, summaries & project views.
4
Problem
Users struggle with inbox overload and inefficient email management using traditional email clients, leading to missed priorities and reduced productivity.
Solution
A modern email client (web app) where users can leverage AI for search & summarization, organize emails into custom project views, and toggle between inbox zero or flexible inbox modes.
Customers
Professionals handling high email volume (e.g., marketers, project managers, startup founders) who prioritize workflow optimization and AI-driven organization.
Unique Features
Combines AI-powered search/summarization with a flexible inbox system and project-specific email views, adapting to both inbox-zero enthusiasts and those preferring a more fluid workflow.
User Comments
Saves time with AI summaries
Intuitive project organization
Flexible inbox options
Improved email prioritization
Seamless search functionality
Traction
Launched on ProductHunt (exact metrics unspecified). Founder’s X (Twitter) profile not explicitly linked; additional traction data (MRR, users) unavailable from provided sources.
Market Size
The global email client market is projected to reach $2.5 billion by 2027 (Statista, 2023), driven by demand for productivity-enhancing tools.