
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.

DiscoverOrg
Clearbit
InsideView
Lusha
Datanyze
UpLead
LinkedIn Sales Navigator
The universal AI agent for work.

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 | adapt.com |
| Pricing | ||
| Platforms | ||
| Company | — | Startup from the United States · 10 - 19 employees · 2026 |
| 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...
Adapt is the universal AI agent that runs on your company brain. Gets instant answers for complex questions, automate workflows on-demand, schedule tasks, and build internal apps with full context of your business. Set it up once and everyone can use it on Slack, web, or mobile.
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
eM Client Review - Best email client for Windows!
More videos
Adapt explainer video
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing eM Client and Adapt.
Adapt's answer:
Adapt publicly lists or features the following customers and customer examples:
Adapt's answer:
Adapt is different because it is built as a shared AI agent for company work, not a private chatbot or single-purpose automation bot.
Teams can ask natural-language questions across connected business systems, get cited answers grounded in live company data, and then take action from the same workflow. Adapt works in Slack and the web app, can automate recurring workflows and scheduled tasks, and can build internal apps and dashboards from live company data.
The strongest difference is the shared-work model: a Slack thread can become an investigation, a report, a workflow, or an internal tool that the team can see, refine, and keep using together.
Adapt's answer:
Choose Adapt when the work you want AI to handle crosses multiple tools, teams, and data sources.
Many AI assistants are either personal chatbots, search tools, or single-app automations. Adapt is designed for shared business workflows: it can gather context from connected systems, reason over the information, provide evidence-backed answers, and take action such as posting to Slack, creating reports, updating records, or triggering workflows.
Adapt is especially useful for teams that already work in Slack and need AI to operate with company context. It also includes business-grade controls such as organization-level access controls, audit logging, encryption in transit and at rest, and SOC 2 Type I certification.
Adapt's answer:
Adapt is built for business teams at startups and scaling companies whose work spans multiple systems: data warehouses, CRMs, support tools, billing platforms, project management systems, Slack, and internal docs.
The primary audience includes leadership, operations, sales, marketing, product, engineering, customer support, and data teams. It is a strong fit for teams that need fast answers from company data, recurring reports, cross-system workflows, and internal tools without waiting on data, engineering, or operations teams for every request.
Adapt is especially useful for teams that already collaborate in Slack and want AI to work where decisions and follow-up already happen.
Adapt's answer:
Adapt was built around a simple belief: the most valuable work in a company is shared, but most AI tools are still personal and disconnected from the systems where work actually happens.
The product grew from the need for one AI agent that can understand company context, investigate across business tools, and help teams act together. Adapt's public product framework is Ask, Understand, Act: ask in natural language, let Adapt gather context from connected tools, then use the answer to create reports, update systems, automate workflows, or build internal apps.
Adapt also uses its own product internally. In its blog post "How Adapt uses Adapt," the team describes using Adapt across engineering, marketing, sales, leadership, and product workflows, from debugging production issues to competitive intelligence, daily company briefings, and CRM updates.
Adapt's answer:
Adapt's public documentation focuses on product architecture and capabilities rather than publishing a full internal engineering stack.
The core technologies and product components described publicly include:
In practical terms, Adapt is built to connect large language models with live company systems, permissions, workflow automation, and collaborative surfaces like Slack.
Share your experience with using eM Client and Adapt. 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.
Adapt is an open-source HTML5 authoring tool and is designed to let you author a multi-device responsive learning product through their Learning Pool Adapt Builder site. This is how it works. You enter a topic by...
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 Adapt since Mar 2021.
When comparing eM Client and Adapt, you can also consider the following products.

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
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DiscoverOrg is an IT sales intelligence platform providing technology marketers access to data, IT org charts, and real time projects.
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Mailbird is the best email client for Windows 7, 8 and 10
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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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InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
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