
KanbanMail
Postbox
Sortd
Superhuman
HEY
Drag for Gmail
Flow-e
Turn your inbox into a kanban board

DevTools Advanced
FullStackToolkit
DevFinanceTools
JSON Formatter & Validator
AllDevToolsHub
Boop
DeveloperTools.Tech
120 free browser-based developer utilities. No sign-up required.

Which is more popular?
Based on our record, Kanmail seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | kanmail.io | devtoolstack.io |
| Pricing | ||
| Platforms | — | |
| Company | 2020 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Kanmail turns your inbox into a kanban board. Drag emails between columns like To Do and Waiting, then clear them a column at a time. Works with any GMail/Outlook/IMAP account. Your mail never touches our servers. Open source. One-time purchase, no subscription.
No description of DeveloperToolStack yet.
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Kanmail and DeveloperToolStack.
Kanmail's answer
Kanmail transforms your email inbox into a kanban board, letting you drag and drop emails between columns to organize workflows visually. It combines all your email accounts (Gmail, Outlook, etc.) into one unified view while keeping your data private on your device. You pay once and own it forever with no subscriptions.
Kanmail's answer
Kanmail offers a visual kanban approach that helps you actually manage email as tasks rather than just reading messages in a list. Unlike competitors, it combines multiple accounts in custom workflow views while keeping all your data local and private. It's a one-time purchase with no subscription fees or cloud dependencies.
Kanmail's answer
Kanmail's primary audience includes professionals who manage multiple email accounts and need to organize emails as actionable tasks, such as salespeople tracking leads, customer support teams managing tickets, and power users who want efficient, keyboard-driven workflows. It appeals to privacy-conscious users who prefer local data storage and those frustrated with subscription-based email clients.
Share your experience with using Kanmail and DeveloperToolStack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I’ve gone through this process for my email client Kanmail [1]. The third party audit is not required for email clients that run on end users computers and store credentials locally. By the looks of it Pegasus falls into this... - Source: Hacker News / over 4 years ago
I’m building a desktop email client [0] that has $45 lifetime licenses. Made to scratch my own itch I’ve been using it as my only client for 4 years now, barely makes any money though! [0] https://kanmail.io. - Source: Hacker News / over 4 years ago
I use pyinstaller for my Kanmail email client [1] and it’s fantastic, but at creating Mac app bundles or Windows exes. Tried making actual standalone binaries for another project and, as others have mentioned, they’re incredibly slow to... - Source: Hacker News / almost 5 years ago
Tracking DeveloperToolStack since Aug 2026.
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