Growth · alternatives · 2026

24 alternatives to Unified Mailbox

A fully private, unlimited, and long-term virtual email box

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

1
UnInbox▲877
Open source modern email for teams and professionals
2024 · uninbox.com · its alternatives →
2
Superinbox▲531
Email vibing in your Gmail / Outlook
Oct 2025 · superinbox.com · its alternatives →
3
UnInbox: Spaces & Workflows▲251
Open source collaborative email platform to get shit done
2024 · uninbox.com · its alternatives →
4
Stable▲525
Get a virtual address & mailbox for your business
2024 · usestable.com · its alternatives →
5NS
NBox – Sign up anywhere without giving your email address▲286
2017 · nbox.notif.me · its alternatives →
6
Primeforge▲232
Google & Microsoft mailboxes for cold email
2025 · primeforge.ai · its alternatives →
7
Landmark▲124
Keep your real email address private!
2019 · its alternatives →
8
Polymail Web▲437
All-in-one email platform for sales communication
2018 · polymail.io · its alternatives →
9
Sunnybox.io▲145
The ultimate API for handling email
2023 · sunnybox.io · its alternatives →
10
Our Shared Inbox▲84
Share & receive emails with your whole QA and dev team
2023 · its alternatives →
11
Umuse▲87
The universal inbox for all of your email and chat messages.
2018 · pg138slot.co · its alternatives →
12
Unified Inbox by ALLO▲81
The only inbox that truly matters
2023 · allo.io · its alternatives →
13
Mailbox 2.0▲132
Fly through your email
2014 · dropbox.com · its alternatives →
14
Closers HQ▲83
Send unlimited cold emails from unlimited mailboxes
2023 · ditlead.com · its alternatives →
15
Universal Inbox▲132
Service your customers across multiple channels
2023 · app.helpwise.io · its alternatives →
16
Just Mail▲64
Secured email platform based on distributed storage network
2014 · its alternatives →
17
1SecMail▲112
Free disposable email that actually arrives in real time
2025 · tmaily.com · its alternatives →
18
AnoneMail▲91
Keep your email address private
2020 · play.google.com · its alternatives →
19
mailbox.my▲73
Your personalized email address
2022 · mailbox.my · its alternatives →
20
RelayBox▲3
Your emails, truly private
2025 · its alternatives →
21
Fastmail▲82
A privacy focused email client
2019 · fastmail.com · its alternatives →
22
Slimbox▲81
Slim your Inbox with email Daily Summaries.
2022 · slimboxapp.com · its alternatives →
23
CatchMailNot▲61
replace your real email with unlimited custom addresses
2021 · catchmailnot.com · its alternatives →
24
Infinitemail▲84
The better way to get email marketing done for your brand
2023 · 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 →