Dev tools · alternatives · 2026
24 alternatives to Inbox Classic, a Outlook Express-like modern desktop mail client
A free, open source mail client for Windows 10 and 11 with the classic three-pane layout: folders, message list and reading pane. Works with Outlook.com, Microsoft 365, Gmail and any IMAP account. No ads, no tracking.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 3 we have checked on their own sites, 3 of them free or with a free tier.
- 1
Inboxer▲212A clean, open-source desktop client for Google Inbox 💌
2018 · denysdovhan.com · its alternatives →
- 2
Inbox Zero▲821Clean Up Your Inbox In Minutes Newsletter management, AI automation, and email analytics. Inbox Zero is the open-source email app that puts you back in control of your inbox.
2023 · getinboxzero.com · its alternatives →
- 3
Hello Inbox▲283Hey HN, I built an email deliverability SaaS with a RAG system. It's trained on all my knowledge and hundreds of real deliverability use cases from 4+ years experience as an Email Deliverability Specialist on Upwork. It solves a frustration problem a lot of businesses are experiencing. I'm looking for feedback so let me know in the comments.
Aug 2026 · helloinbox.email · its alternatives →
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Inbox Zero Tabs▲398Split inbox tabs for Gmail. 100% private. 100% free
2025 · chromewebstore.google.com · its alternatives →
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Fly through your email. Now on Mac
2014 · theverge.com · its alternatives →
- 9
Free omnichannel customer service software
2020 · bird.com · its alternatives →
- 10
The missing native desktop client for Gmail on Windows 10.
2018 · its alternatives →
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Mimestream, a native macOS email client for Gmailfree tier, from $4.99/mo▲403A native macOS email client for Gmail
2020 · mimestream.com · its alternatives →
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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 →
- 16
Scapefree tier, from $20/mo▲334An intelligent email inbox that works for you
14d ago · scape.app · its alternatives →
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:inbox_tray: IMAP based message broker client. Contribute to mikaa123/imapmq development by creating an account on GitHub.
2016 · github.com · its alternatives →
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bytemailfree tier, from $3.99/mo▲301Native Mac email: every inbox, in your notch, no trackers
14d ago · bytemailapp.com · its alternatives →
- 19
Inboxer▲9📫 Unofficial, free and open-source Google Inbox Desktop App
2018 · denysdovhan.com · its alternatives →
- 20
InboxKitten▲162An open-source, disposable email service 💌
2018 · inboxkitten.com · its alternatives →
- 21
TextCraft AI▲181Smart inbox, smart emails - AI at your service
2023 · chromewebstore.google.com · its alternatives →
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Free, open-source cloud productivity suite. Mail, Calendar, Contacts, and Drive - faster and leaner than Google Apps. Self-host or use our cloud.
May 2026 · tinycld.org · its alternatives →
- 23
Free metrics 📈 for your business and team email ✉️
2018 · inboxgrader.com · its alternatives →
- 24
Email made easy and beautiful
2020 · getmailbird.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 →