Keeper Security vs Microsoft Outlook

KSvs

Two Tech stack tools side by side: what each does, what it costs and who it suits.

The verdict

On the data we hold, it's close: neither pulls ahead on features, a free plan or AI access. The choice comes down to how you work.

What the data says

Both have a free plan, so you can try each before you pay.
Microsoft Outlook starts lower, at $1.67/mo against $2/mo.
Both have an API and an MCP server, so either works with AI employees.
In our Tech stack ranking, Keeper Security places 28 and Microsoft Outlook 29 of 72.

Outlook (free)Free account for one person with 15 GB mailbox storage.Free
Microsoft 365 BasicAd-free Outlook for one person with 100 GB mailbox storage.$19.99/yr
Microsoft 365 PersonalFor one person, with desktop apps and Copilot features.$99.99/yr
Microsoft 365 FamilyFor one to six people, with desktop apps and Copilot features.$129.99/yr
Microsoft 365 Business BasicWeb and mobile Outlook with custom business email, paid yearly.$84/yr/seat
Microsoft 365 Business Standard with CopilotDesktop apps with Copilot built in, paid yearly.$282/yr/seat
Microsoft 365 Business Premium with CopilotAdds advanced security and device management, with Copilot built in, paid yearly.$384/yr/seat

Prices as the vendors list them. They change often; the final price is on their sites.

We haven't written up who Keeper Security suits yet.

Businesses and teams that work in Microsoft 365 and want email, calendar and contacts in the same place as Teams, Word and Excel.

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