
StackMail
A self-hosted, unified webmail client. Connect multiple IMAP/SMTP accounts and manage them all in one clean interface.

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Which is more popular?
Based on our record, UserInterface.io seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mailflow.sh | user-interface.io |
| Pricing | — | |
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What each product offers, as listed by its team.


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


Share your experience with using Mailflow.sh and UserInterface.io. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Mailflow.sh since Aug 2026.
SEEKING WORK | Armenia | Remote | Frontend developer My Stack: VueJS 3 & Laravel. HTML/CSS/JS/git/MacOS. UI/UX competency, has written two books and active on twitter: https://twitter.com/vponamariov Github... - Source: Hacker News / about 3 years ago
Maybe the first rule should be ‘physician/quack heal thyself... Then seek feedback’. The only UI/UX newsletter I subscribe to[0] also has a a similar problem, but the advice is usually solid. [0] https://user-interface.io/. - Source: Hacker News / over 3 years ago
I've got a lot of mileage out of following Victor Ponamariov: - https://user-interface.io - https://hundred.user-interface.io <- this is especially good - https://twitter.com/vponamariov. - Source: Hacker News / over 4 years ago
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