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I made an email app inspired by Arc browser

Details

External ID
47458348
Source
HN
Company
—
Product
I made an email app inspired by Arc browser
Website domain
define.app
Launched
March 20, 2026
Cohort
—
Upvotes
66
Upvotes percentile
0.8683886838868389
Tags
—
Fetched at
Sept. 7, 2026, 9:26 p.m.
Updated at
Sept. 7, 2026, 9:26 p.m.

Description

Email is one of those tools we check daily but its underlying experience didn’t evolve much. I use Gmail, as probably most of you reading this.The Arc browser brought joy and taste to browsing the web. Cursor created a new UX with agents ready to work for you in a handy right panel.I use these three tools every day. Since Arc was acquired by Atlassian, I’ve been wondering: what if I built a new interface that applied Arc’s UX to email rather than browser tabs, while making AI agents easily available to help manage emails, events, and files?I built a frontend PoC to showcase the idea.Try it: https://demo.define.appI’m not sure about it though... Is it worth continuing to explore this idea?

Enrichment

Theme
email design, templates, and productivity
Vertical
Horizontal
Function
Communication
Audience
B2C
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
email client with browser-inspired design
Manually corrected
False

Could you build this?

Yes It is an alternative desktop or web UI for email that connects to existing Gmail or IMAP APIs with custom styling and an integrated LLM sidebar panel.

Discussion

20 comments analyzed.

Competitors mentioned: Outlook, Traditional email management tools

Concerns raised: AI replacing sensitive email interface too soon, Mobile power tools difficult to navigate, Mobile first design makes desktop apps look like toys

Feature requests: Mobile version, Dark mode, Hide top tabs option in settings, Adaptive UI that auto-prunes unused features per user

Competitors

Other products that read as similar to this one — 72 launches clear the similarity bar, closest 8 shown.

Attention rank: #15 of 73 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 140 days after the earliest competitor.

Other launches for this product