Life & fun · alternatives · 2026

24 alternatives to Umbra Mail

A calmer Gmail where emails look like chat threads

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Threadable▲93
Making group email lists less noisy, more actionable
2014 · its alternatives →
2
Apparent for Gmail▲225
I got frustrated with Gmail's lack of customization, and built an extension for myself. It doesn't do much other than modify how Gmail is displayed in Chrome. Does it as minimally as possible (that I can engineer). Done locally, zero remote processing. Currently built the following settings (want to add more soon): Conversations: * Show newest message first * Show every message in a thread (sometimes they're collapsed into numbered bubbles) * Remove AI overviews (retches) Layout/UI: * Minimize the search & top bar * Minimize the far left "rail" (Mail/Chat/Meet) * Hide a bunch…
Mar 2026 · chromewebstore.google.com · its alternatives →
3
Holoholo▲71
A Gmail plugin that ensures inbox zero
2016 · holoholo.xyz · its alternatives →
4
Helo▲103
An independent email API from former Postmark folks
20d ago · helohq.com · its alternatives →
5
Seer▲98
Making emails actionable.
2014 · getseer.com · its alternatives →
6AP
A 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 →
7
Gmail Mic Drop▲159
Quickly end long threads
2016 · blog.google · its alternatives →
8
Knotable▲72
Cut the noise out of busy email threads
2014 · its alternatives →
9
Pingly▲86
A new messaging platform working to evolve email
2014 · its alternatives →
10
Sidechat by Mixmax▲130
Chat & collaborate on emails, without leaving your inbox.
2020 · mixmax.com · its alternatives →
11
Gmail Emotional Labor▲78
A tool to automatically add social niceties to your emails
2017 · emotional-labor.email · its alternatives →
12
Neat Messages for Gmail▲121
No more long and annoying lines of text in Gmail
2018 · chromewebstore.google.com · its alternatives →
13
Mailcloud▲110
A New Way to Email
2014 · mailcloudapp.com · its alternatives →
14FM
Flute – my attempt at a better email API▲40
2018 · flutemail.com · its alternatives →
15G
GotEmail▲63
A fast, native Mac mail app for all your inboxes
1d ago · gotemail.com · its alternatives →
16ZH
ZenMail – Hey for Gmail (an email screener)▲7
2020 · zenmail.shapea.com · its alternatives →
17
QuickMail▲86
Get more responses from cold emails with less effort
2014 · quickmail.com · its alternatives →
18
EzMail.AI Extension▲84
ChatGPT for Gmail Chrome extension that generates emails
2023 · its alternatives →
19
Braid, project and dialogue management built into Gmail▲7
2016 · chrome.google.com · its alternatives →
20
Xem▲69
Open-source email marketing with managed SMTP
29d ago · xem.email · its alternatives →
21AS
Automatically synchronized Gmail inboxes for support and sales teams▲5
2019 · supportall.cc · its alternatives →
22
Free Email Tracker for Gmail▲7
2017 · chrome.google.com · its alternatives →
23PA
Paceable - An easy way to manage Group Emails▲6
2013 · slideshare.net · its alternatives →
24
Boomerang for Gmail▲47
Never let a thread die, never forget a follow up
2014 · boomeranggmail.com · its alternatives →

Also compare

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 →