Growth · alternatives · 2026
24 alternatives to Marco, a privacy-first, offline-first email client (IMAP-native, no AI)
Hey HN. I'm Isaac, and I'm building Marco (https://marcoapp.io), a cross-platform email client that works with any IMAP provider. macOS, iOS, and web today. I started Marco because I finally lost patience with Apple Mail, and the email client market has a weird gap. Legacy clients look terrible and/or are not cross-platform. The good ones scan your data or cost $300+/year. And there's a graveyard of startups (Tempo, Big Mail, Caley) who built beautiful products and shut down after a year or two. I made a few opinionated bets early on: 1. IMAP-first, not Gmail API-first.…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Zero▲845Hi HN, I’m Nizar, and I’m building Zero (https://0.email) — an AI-powered email client that manages your inbox for you. Email hasn’t changed in decades, even though the way we work has. The average knowledge worker now spends close to 30% of their week on email, constantly reacting, replying, and sorting through noise. It’s become one of the biggest productivity sinks in modern work. At the same time, AI has transformed how we write, plan, and collaborate — yet our inboxes are still stuck in the past. I built Zero to fix that. Zero automatically prioritizes, organizes, and even…
2025 · 0.email · its alternatives →
- 2
Sidemail 2.0▲306Hi all! I'm Kristyna, maker of Sidemail. I'd love to share with you what we've been building. We built Sidemail because sending emails from a SaaS app was way harder than it should be. Sidemail is made for developers and teams that want one simple place to handle SaaS emails with reliable delivery and no bloat. It has: - Everything for creating, managing and delivering SaaS emails in one platform, - Easy-to-use email API for sending password resets, receipts, etc. - Messenger for writing product updates and newsletters, - Email automations for onboarding and lifecycle flows, - Fast email…
Nov 2025 · sidemail.io · its alternatives →
- 3
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
22d ago · talanoa.email · its alternatives →
- 4
Quartz▲270AI email client built for focus. Runs locally on your Mac
Jun 2026 · quartzmail.ai · its alternatives →
- 5
A native macOS email client for Gmail
2020 · mimestream.com · its alternatives →
- 6
- 7
The prototype of ambient agents
2025 · agentinbox.ai · its alternatives →
- 8
InboxSDK▲508First usable API to write Gmail Apps for 1B active users
2015 · inboxsdk.com · its alternatives →
- 9IM
2013 · khamidou.github.io · its alternatives →
- 10
Hi all! Excited to share cc.dev after months of work and refinement. The idea for this product came from trying to do email marketing for my side project, CubeDesk, a site where Rubik's Cube enthusiasts can time themselves, race with one another, train algorithms — it's a fun niche! With over 40k users, sending even a single campaign was becoming expensive with MailChimp. I knew AWS SES would be much cheaper, but it’s just an API with none of the other necessities you need for a robust email marketing platform. Beyond cost, I was also frustrated with having to make sure my database was…
2023 · cc.dev · its alternatives →
- 11
- 12
Taurin▲328TL;DR: Taurin is an AI-powered, local-first email client that helps you clear your inbox faster and smarter. We’re building a Personal Agent that learns and adapts to your workflow and integrating it deeply into the email experience so you can reach your maximum productivity. What we currently support • Automatically determine the importance and reply-needs for each email and provide a dedicated view • Organize all conversations and files exchanged with a specific contact in a sidebar • Track when emails sent via Taurin are opened • Summarize and auto-label emails with customizable options •…
2024 · taurin.io · its alternatives →
- 13OS
Hi HN! We’re Aleem, Chris, Borys, Meichen and Zach from Streak (YC S11) and today we’re open sourcing our InboxSDK https://www.inboxsdk.com, which makes it easy to build apps for Gmail. Over 1.8B users spend their days in Gmail! Having your app built into the Gmail workflow is a better user experience and gives you great user retention. InboxSDK gives you a high-level, declarative API to insert your UI into Gmail without having to directly manipulate the DOM yourself. End users install a browser extension to use your app. The SDK can add UI to multiple areas of Gmail. For example,…
2022 · its alternatives →
- 14
The ultimate search, analysis, and productivity companion
2024 · shortwave.com · its alternatives →
- 15
Modern email app for Mac, iOS, and Android, powered by AI
2017 · its alternatives →
- 16
Orbit for Mac▲161A native Mac email client for multiple Gmail accounts. Every Google account — Gmail, Calendar, Drive — in one window, each in its own session. 4 MB download, no bundled browser. Buy once.
Jul 2026 · orbitformac.com · its alternatives →
- 17
Mailcheap▲123Email hosting, dedicated email servers, API-first platform
2018 · mailcheap.co · its alternatives →
- 18
Audryo▲70Audryo is agent-first infrastructure for lifecycle email. Instead of adding AI to a canvas tool, it starts from the API: one set of endpoints powers the app, an MCP server, a CLI, and agent skills. Claude Code, Codex, or Cursor can build audiences, journeys, campaigns, and brande
24d ago · audryo.com · its alternatives →
- 19
Access predefined IMAP mailboxes with a browser using one time passwords or a YubiKey - dividuum/one-time-mail
2016 · github.com · its alternatives →
- 20
Kanmail▲101Hey HN! Been a while.. last post for reference in 2020: https://news.ycombinator.com/item?id=22985055. Moved city, job and had two children since then which is wild :) Been working away shifting Kanmail over to a Go backend (using the excellent wails) and rewriting the frontend in TypeScript. This "new" v2 is much quicker, overcomes a bunch of old limitations (no age limit on paginating folders) and finally gets a working Linux AppImage (*my Linux test setup is somewhat limited and I expect there's plenty of edge cases here - hit me up if you have issues). Anyway, would love…
2020 · kanmail.io · its alternatives →
- 21
Hey Hacker news, Over the last couple months, I've been hacking with a friend on an email client for gmail that is similar to superhuman. A little backstory, we think that superhuman, in it's current implementation is vim-like. We hope to mostly match the performance and usability there and expand it into something more vscode-like. Looking for feedback and suggestions!
2023 · github.com · its alternatives →
- 22APA personal Gmail▲127
Hey guys, so I've been building my own Gmail for the past few weeks and would like your feedback. Find a preview here: http://i.imgur.com/UDz2y.png (Mouse cursor is over the "REPLY" button, to show the hover-effect) The app you see in the screenshot is what I've been using in the past week and it starts to feel better than the gmail interface. Just a quick explanation: - It's conversation-based like Gmail. - Conversations with new emails are on the left. - Conversations may be labeled ... based on predefined filters or manually. - Every conversation stays in the left sidebar until marked…
2012 · i.imgur.com · its alternatives →
- 23AO
Caley.io reimagines your inbox with a fusion of AI brilliance and unmatched efficiency. Think smarter analytics, streamlined conversations, and effortless newsletter management all in one sleek package. More than an email client, it's your unfair advantage.
2024 · caley.io · its alternatives →
- 24
The collaborative email platform for your team
2017 · helpmonks.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →