The verdict
On the data we hold, Microsoft Outlook comes out ahead. Here is why, point by point.
What the data says
- Only Microsoft Outlook has a free plan to start on.
- Microsoft Outlook starts lower, at $1.67/mo against $7/mo.
- In our Tech stack ranking, Microsoft Outlook places 29 and Proton 70 of 72.
Side by side
| At a glance | PRProton | |
|---|---|---|
| Starts at | $1.67/mo | $7/mo |
| Free plan | Yes | No |
| API | Yes | Not known yet |
| MCP server | Yes | Not known yet |
| Links |
Plans and pricing
Microsoft Outlook
- 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
PR
Proton
- Mail EssentialsTeams needing core secure email and calendar functionality$7.99/mo
- Workspace StandardGroups requiring full privacy suite with large storage$14.99/mo
- Workspace PremiumOrganizations needing AI tools and extensive resources$24.99/mo
Prices as the vendors list them. They change often; the final price is on their sites.
Who each is for
Choose Microsoft Outlook if…
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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