New check

Comparison

Outlook vs Mailbird

Outlook lands on Worth it, and Mailbird lands on Depends.

Outlook

outlook.live.com

Worth it

Confidence: Medium

Use free Outlook.com for personal email, and it's the default pick if your workplace already runs Microsoft 365.

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Mailbird

getmailbird.com

Depends

Confidence: Low

Buy it only if you juggle several Gmail/IMAP accounts on Windows or Mac and want one paid desktop app.

Read the full report

Outlook versus Mailbird
Compare	Outlook	Mailbird
Verdict	Worth it	Depends
Best for	Personal email users	Multi-account Gmail/IMAP jugglers
Who it's not for	Customer support teams needing shared inboxes	Single-account users . free webmail already works
Privacy	Multiple critical RCE CVEs patched 2025-2026; FBI warns of Outlook/M365 account hijacking.^⁶	No known public vulnerabilities found in the sources reviewed.
Support quality	Feedback portals reportedly ignored; complaint threads common	No support evidence found.
Public sentiment	Users value Outlook's depth and Microsoft integration, but the forced New Outlook migration drew heavy criticism.^¹	No independent Mailbird user quotes surfaced; forum threads on Outlook alternatives mostly recommend eM Client or Thunderbird instead.
Biggest gotcha	Classic Outlook features missing in New Outlook; migration is effectively forced on Windows users^⁴	Discount whiplash: Black Friday runs 80%+ off . rarely pay list price.

Pick Outlook when

Personal email users
Microsoft 365 organizations
Office-document-heavy teams
Calendar-centric professionals

When Outlook is not a fit

Customer support teams needing shared inboxes
Orgs avoiding Microsoft lock-in
Users wanting maximum privacy after hack headlines

Pick Mailbird when

Multi-account Gmail/IMAP jugglers
Outlook and Thunderbird alternatives seekers
Users displaced by Windows Mail app retirement

When Mailbird is not a fit

Single-account users . free webmail already works
Anyone happy with free Thunderbird or eM Client's home tier
Mobile-first users . desktop only
Teams needing shared inboxes or admin controls

Sources

Microsoft Outlook Reviews 2026 . G2g2.com
review
Outlook Mail Reviews . Trustpilottrustpilot.com
review
Microsoft Outlook review: AI-enhanced email client . ITProitpro.com
review
the new Microsoft Outlook is pure garbage . Redditreddit.com
review
Alternatives to the inferior New Outlook . Microsoft Q&Alearn.microsoft.com
review
CVE-2026-42893: Microsoft Outlook RCE . SentinelOnesentinelone.com
security
Zero-Click Outlook Vulnerability: May 2026 Patchburgitech.com
security
Microsoft Patches Two New RCE Vulnerabilities . Morphisecmorphisec.com
security
Cyber attackers hijacking Outlook, Teams and 365 log-ins, FBI says . The Hillthehill.com
news
Compare Microsoft 365 Plans & Pricingmicrosoft.com
official
Advanced Outlook.com security for Microsoft 365 subscriberssupport.microsoft.com
official
Why companies should stop using Outlook for customer service . SuperOfficesuperoffice.com
review
Mailbird homepagegetmailbird.com
official
Best Email Client for Windows (2026)getmailbird.com
official
Best Email Client for Mac in 2026getmailbird.com
official
Windows 10 guide after Microsoft retired Mail appgetmailbird.com
official