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Head-to-head · Personal Email Services

Outlook.com vs Fastmail Masked Email

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Outlook.com #2 in Personal Email Services 9.2/10 Free plan Free plan✓ 2 of 3 features Visit Outlook.com
Fastmail Masked Email #6 in Personal Email Services 8.6/10 30-day trial Free trial✓ 0 of 3 features Visit Fastmail

Outlook.com leads on 2 checks, Fastmail Masked Email on 1, and 3 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOutlook.com · 9.2/10
  • Free planonly Outlook.com
  • Free trialonly Fastmail Masked Email
  • Most featuresOutlook.com · 2 of 3

Outlook.com scores higher on our rubric for personal email services: 9.2 against 8.6 out of 10; our editors rank them #2 and #6.

Outlook.com offers free plan; Fastmail Masked Email doesn't. Outlook.com leads on mailbox storage: 100 GB versus 5 GB. Fastmail Masked Email leads on attachment limit: 50 MB versus 25 MB.

Outlook.com is the better fit for people who use Microsoft services. Fastmail Masked Email is the better fit for masked email and privacy controls.

  • Outlook.com fits best

    People who use Microsoft services

  • Fastmail Masked Email fits best

    Masked email and privacy controls

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Side by side

Feature Outlook.com 9.2/10 Visit ↗ Fastmail Masked Email 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in Personal Email Services #6 in Personal Email Services
Best for People who use Microsoft services Masked email and privacy controls
Pricing model Free plan + paid Paid
Starting price — $4/user/mo
Free plan ✓ (best) —
Free trial — 30 days
Deployment Cloud, Desktop, Mobile Cloud, Desktop, Mobile
Platforms Web, Windows, macOS, iOS, Android Web, Windows, macOS, iOS, Android
Integrations 3 integrations 6 integrations
Features Outlook.com 2/3 · Fastmail Masked Email 0/3
Custom domain — Not checked yet
Email aliases ✓ (best) Not checked yet
Ad-free inbox ✓ (best) Not checked yet
Specs
Mailbox storage 100 GB (best) 5 GB
Attachment limit 25 MB 50 MB (best)
Platform access Web_mobile_desktop Not checked yet
Our review
Pros
  • Free accounts include 15 GB of mailbox storage.
  • Aliases, inbox rules, Focused Inbox, and Sweep help organize email.
  • Connects with OneDrive, Box, and Dropbox for file sharing.
  • Generates unique masked addresses and lets you block or delete them
  • Supports aliases, catch-all addresses, and replies from masked addresses
  • Includes migration tools, calendar, contacts, and broad platform coverage
Cons
  • Free accounts have less mailbox storage than the 100 GB paid tiers.
  • Ad-free email and calendar require a Microsoft 365 subscription.
  • Custom domains are not supported.
  • No free plan; paid access starts at $4 per user per month
  • Basic excludes IMAP, POP, SMTP, CalDAV, and CardDAV access
  • Masked Email is part of Fastmail rather than a separately priced product
Our verdict

Outlook.com is Microsoft's personal email service, available through a browser and Outlook apps. It brings email, calendar, and contacts together with spam filtering and 15 GB of mailbox storage on the free plan. Focused Inbox, inbox…

Read the review →

Fastmail Masked Email generates unique email addresses for online accounts, helping keep a real address private and allowing individual addresses to be blocked or deleted. It is a feature of the broader Fastmail hosted email service, which…

Read the review →
  1. Outlook.comPersonal Email Services 9.2Free plan
  2. Fastmail Masked EmailPersonal Email Services 8.630-day trial

Strengths and trade-offs

  • Outlook.com — where it wins

    • Free accounts include 15 GB of mailbox storage.
    • Aliases, inbox rules, Focused Inbox, and Sweep help organize email.
    • Connects with OneDrive, Box, and Dropbox for file sharing.

    Where it doesn't

    • Free accounts have less mailbox storage than the 100 GB paid tiers.
    • Ad-free email and calendar require a Microsoft 365 subscription.
    • Custom domains are not supported.

  • Fastmail Masked Email — where it wins

    • Generates unique masked addresses and lets you block or delete them
    • Supports aliases, catch-all addresses, and replies from masked addresses
    • Includes migration tools, calendar, contacts, and broad platform coverage

    Where it doesn't

    • No free plan; paid access starts at $4 per user per month
    • Basic excludes IMAP, POP, SMTP, CalDAV, and CardDAV access
    • Masked Email is part of Fastmail rather than a separately priced product

More comparisons

All personal email services comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update