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Microsoft 365 vs Proton Mail

Microsoft 365

7.4/ 10

Higher score

Proton MailIndie

9.0/ 10

Across 4 measured dimensions: Microsoft 365 wins 0, Proton Mail wins 2 (2 tie / n/a)

[01]

Side by side.

8 dimensions

Metric	Microsoft 365	Proton Mail
Score Winner: right	7.4	9.0
Δ 90 days	— flat	— flat
Parent & badge Winner: right	Microsoft Corp.	IndependentIndie
Founded	2011	2014
Best for	Corporate folks needing rock-solid email	privacy junkies who want real encryption
Price per mo Winner: right	$6.00/ mo	$3.99/ mo
Renewal multiplier	—	—
Tagline	Outlook + Exchange + Office, billed by the seat forever	Swiss end-to-end encrypted mail, free tier is real

[02]

What works, what doesn't.

Per provider

Microsoft 3654 pros · 4 cons

+ Pros

✓Exchange features still unmatched
✓Desktop Office with Standard plan
✓Strong compliance features
✓Solid IT support community

– Cons

✗Admin center is a maze
✗Constant pricing/SKU changes
✗Prices hiked in 2024
✗New Outlook broke workflows

Proton Mail5 pros · 4 cons

+ Pros

✓Real end-to-end encryption
✓Swiss jurisdiction for privacy
✓Usable free tier, 1GB storage
✓Custom domains on paid plan
✓Independent, not corporate-owned

– Cons

✗IMAP needs Proton Bridge app
✗Full E2E only with Proton users
✗Slow search on encrypted mail
✗Pricey compared to Migadu/Posteo

Make the call

Pick one and go.

Both links are affiliate. Score doesn't move because of it.

VisitMicrosoft 365 ↗Score 7.4 VisitProton Mail ↗Score 9.0

← Read full Microsoft 365 review·Read full Proton Mail review →

[03]

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