
Thunderbird
Mailbird
Microsoft Outlook
Postbox
Apple Mail
Mailspring
Evolution
eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

Day One
Rosebud App
Spike
Crypho
Journey
ProtonMail
Keybase Chat
A journal that finds the pattern you were too close to notice, what's driving it, and what to try next. No tags, no links, no folders.

Which is more popular?
Based on our record, eM Client seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | emclient.com | cipher.sysapp.dev |
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| Company | — | Startup from Australia · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


→ all major services supported (including Gmail, Exchange, iCloud, and Outlook365) → automatic set up for most email services → simple and fast data import from all major email apps (including Microsoft Outlook, Outlook Express, Windows Mail, Thunderbird, Incredimail and more). → touch support...
Cipher is a journal for people who write things down and never get anything back from it. You write however you like, or speak it. No tags, no folders, no linking. Over days and weeks, Cipher groups related entries and comes back with three things: The pattern you were too close to notice What's...
What each product offers, as listed by its team.


Walkthroughs and reviews on video.
eM Client Review - Best email client for Windows!
More videos
Explore Cipher, a personal knowledge management platform engineered to refine self-understanding and enhance goal achievement.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing eM Client and Cipher by Sysapp.dev.
Cipher by Sysapp.dev's answer:
Cipher is for individuals and it's in beta.
Cipher by Sysapp.dev's answer:
Go microservices, SvelteKit (the app, installable as a PWA), Next.js (the website), PostgreSQL, Qdrant for search by meaning, Redis, and AWS. Insights are generated through the OpenAI and Google Gemini APIs.
Cipher by Sysapp.dev's answer:
You don't organise anything, and you don't have to ask it anything. You just write, and over time Cipher groups related entries and comes back with a pattern you were too close to notice, what's likely driving it, and one thing to try. Every insight can be traced: ask where it came from and it quotes the lines you wrote.
Cipher by Sysapp.dev's answer:
If you want a beautiful diary, there are good ones. If you want to chat with an AI about your day, there are good ones too. Cipher is for people who want their writing to add up to something, without tagging it, linking it, or asking the right question. And because every insight shows its sources, you can check it rather than take it on trust.
Cipher by Sysapp.dev's answer:
People who already write things down, or want to: journallers, people who think in notes, people working through decisions, and people reflecting on how they feel. It suits anyone who wants to understand their own patterns. It's a reflection tool, not therapy, and it doesn't diagnose anything.
Cipher by Sysapp.dev's answer:
Regular journals felt like shouting into the void, and note apps were either too structured (Obsidian) or not structured enough (Apple Notes). I wanted something in between: write however I like, and have the patterns I couldn't see myself come back to me. You can't surprise yourself. Cipher is my attempt to work around that bug.
The longer version: https://1x-eng.github.io/blog/posts/cipher/
Share your experience with using eM Client and Cipher by Sysapp.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


If you have multiple email accounts and want a neat way to organize them, eM Client can be a good option to consider. It has a few unique features, such as the Sidebar view, which can help provide context and improve...
One point in eM Client’s favor is its free version. However, its features are pretty limited. For example, you can only use it with two email addresses, and the only customer support option is the user forum.
EM Client is a strong competitor of Outlook that has a easy-to-use interface. This application helps you to manage email, calendar, contacts, and tasks. It can be used for Windows and Mac.
We have no reviews of Cipher by Sysapp.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Also, if you're also trying to use Xtra email in Microsoft Outlook, also expect problems. Outlook is also crap. There are other email application options. Em Client (emclient.com) is an excellent alternative to Outlook. Source: about 3 years ago
Totally agree on the security risk. On the other hand setting up, maintaining and explaining PGP for non-technical users usually leads to not using encryption at all, which is by far less secure than a self-managed PGP gateway on a... Source: over 4 years ago
I use EmClient for my email/calendar on Windows desktop. Source: over 4 years ago
Tracking Cipher by Sysapp.dev since Sep 2026.
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Mailbird is the best email client for Windows 7, 8 and 10
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Rosebud's therapist-backed platform combines AI with interactive journaling, habit-building, and emotional support. See significant improvements in just 7 days.
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Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
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Spike's AI-first email helps you stay organized, respond faster, and boost productivity effortlessly. By turning email into chat, you can work and collaborate efficiently - with anyone. Welcome to the future of email.
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