
Superhuman
Spark Mail
Gmail
Missive
MailPace
Eudora
Grumpy Website
Manage all your inboxes effortlessly with a single app. Stay on top of your emails, no matter the provider or device.

Simple Client Onboarding and Verification

Which is more popular?
Based on our record, MarcoApp.io seems to be more popular. It has been mentioned 23 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | marcoapp.io | stackgo.io |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 1 - 9 employees | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Manage all your emails effortlessly with an app designed for busy professionals and anyone struggling with juggling multiple inboxes. With seamless integration for Gmail, iCloud, and other providers, you can keep everything organised in a single hub. If you are looking to even stay productive no...
No description of StackGo yet.
What each product offers, as listed by its team.


No features have been listed yet.
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MarcoApp.io and StackGo.
MarcoApp.io's answer
We allow all providers to be connected —Gmail, iCloud, Outlook, etc. It's easier and faster than Gmail, but it costs less than a third of what Superhuman charges.
Plus, we will never sell your data, unlike others.
MarcoApp.io's answer
Beautifully designed, easy to use, fast and it doesn't break the bank.
MarcoApp.io's answer
Individuals who are willing to pay for an email client instead of having their data harvested.
MarcoApp.io's answer
We wanted something as nice as Superhuman but that would allow me to connect all of my email accounts, not only Gmail and Outlook. So we built it.
Share your experience with using MarcoApp.io and StackGo. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of StackGo yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Yes, Marco does this (disclaimer, I'm the solo founder): https://marcoapp.io Contacts populate alongside email threads in search results. If you click on a contact, it will take you to a dedicated contact screen with every thread you've... - Source: Hacker News / 6 months ago
I'm Isaac. I've been building Marco (https://marcoapp.io) for about a year now. It's a cross-platform email client built in React Native with Expo, and I want to share the journey because it's been one of the hardest things I've ever built. - Source: dev.to / 7 months ago
The deeper issue here isn't about Antigravity specifically. It's that email is most people's de facto digital identity. Every password reset, every 2FA recovery, every account verification flows through it. When a company can revoke... - Source: Hacker News / 7 months ago
Tracking StackGo since Mar 2021.
When comparing MarcoApp.io and StackGo, you can also consider the following products.


Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Compare Spark Mail to MarcoApp.io or StackGo:

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.
Compare Gmail to MarcoApp.io or StackGo:

Team communication app now supporting FB, Twitter & SMS
Compare Missive to MarcoApp.io or StackGo:

Fast Transactional Email. Independent, privacy-focused, and hosted in the EU
Compare MailPace to MarcoApp.io or StackGo:

Eudora started in 1988, at the University of Illinois because the internet was a growing and burgeoning place, but email was not really established on the desktop computers that people were using at the time.
Compare Eudora to MarcoApp.io or StackGo: