81 products on Product Hunt that people compare with each other, in 6 groups of direct competitors; 1 of them rising.
SuperhumanThe most productive email app. Save 4 hours a week. 
SparkAll in one email solution.
SlashyThe AI assistant that does email for you
ZeroAI Native Email Client
UnInboxOpen Source Modern email for teams and professionals
ShortwaveIntelligent email, powered by AI — Smarter & faster email designed for stress-free productivity
UpstreamThe inbox designed for humans and agents
SuperinboxEmail vibing in your Gmail / Outlook
Snoooz AIAI that drafts, replies, routes, and follows up on email
Extra ThursdayFly through 1000s of emails in minutes with deep-context AI
SupafaxEmail-native assistant that learns how you work
AI EmailyYour AI inbox that writes like you + replies on autopilot
HypertypeWrite emails 10x faster using AI + your own information
MailMaestroYour AI email copilot for Gmail and Outlook. 
TextCraft AI 🐱Smart Inbox, Smart Emails: AI at Your Service! 🚀✉️ 
Lightfern for EmailThe telepathic AI writing tool
Emails, replies, posts, tweets with AIReplix AI: Say Less to Say More: Context-Aware Posts
compose.aiWrite email at the speed of thought with AI.
Klu - Search bar for all Gmail AccountsOne search bar for all your Gmail accounts 
BAREMAIL ʕ·ᴥ·ʔMinimalist Gmail client for bad wifi connections
Simplify GmailBrings the simplicity of Google Inbox to Gmail.
Checker PlusWork with Gmail without even opening it.
Multi Email Forward by cloudHQ 2.0Automate forwarding all your Gmail emails to another email
GmailifyThe power of Gmail for everyone else's email
AgentMailEmail Inboxes for AI Agents 
Atomic Mail AgenticLet your agents read, send, and react to email autonomously
NitrosendEmail for AI agents. They sign up, send and reply.
FluxmailSelf-hosted email for AI agents and applications
Inbox ZeroClean up your inbox in minutes. Open source.
SentryaGet rid of scams and protect your personal info.
ZeroInbox.ai#1 AI Email Organizer / Cleaner. > 1 Million Emails Cleaned29 more products in this market fit no group: one of a kind here, or with too little on their Product Hunt page to tell.
How they're built
From the stacks we know of them: what their makers say, their websites, their legal pages.
Markets come from the alternatives Product Hunt lists for each product. Groups are drawn by Claude from a few words on what each product is, so read them as a first cut. Launch counts are of the products we have pages for, which lean recent: compare groups with each other rather than reading them as a census. Product Hunt categories here: Email clients (45), Writing assistants (14), Automation tools (9). Updated 2026-10-14.
OpenRouter
Firebase
PostHog
OpenAI API
