Softwr

Productivity · head to head

Microsoft 365 vs Mimestream

Microsoft 365 logo

Microsoft 365

Productivity

Subscription bundle of the Office applications with mail, storage, meetings and organisational identity

From
$7/month
Rated
-
Full reviewWebsite
Mimestream logo

Mimestream

Productivity

Native Mac email client built specifically for Gmail and Google Workspace accounts, and nothing else

From
$4.99/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Microsoft 365 business plans are capped at 300 seats, so an organisation that grows past that must move to Enterprise plans, which changes both the price per user and the feature mix at the moment it can least afford a migration project.; Mimestream it only works with Gmail and Google Workspace, so it is entirely useless for anyone with an iCloud, Outlook, Yahoo or other IMAP account.
  • They diverge on capability: Microsoft 365 covers Office applications, Mimestream covers Native Gmail labels.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Microsoft 365 and Mimestream actually diverge.

Attributes where Microsoft 365 and Mimestream differ
AttributeMicrosoft 365Mimestream
Starting price$7/month$4.99/month
Pricing modelsubscriptionPer user per month
PlatformsWebMac

Identical on both: free tier (No), user rating (Not yet rated), category (Productivity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Microsoft 365

  • Office applications
  • Hosted services
  • Teams
  • Microsoft Entra ID
  • OneDrive storage
  • Device management and endpoint protection
  • Purview compliance
  • Copilot

Only in Mimestream

  • Native Gmail labels
  • Gmail filters
  • Fast local search
  • Conversation threading
  • Multiple account support
  • Native macOS integration

What people use each for

The jobs each tool is most often brought in to do.

Microsoft 365

  • Any organisation that wants mail, documents, meetings and identity from one supplier on one bill.not Mimestream
  • A company standardising on single sign-on, where Entra ID becomes the account other services authenticate against.not Mimestream
  • Regulated work that needs retention, legal hold and eDiscovery across mail and documents, provided the tier that includes them is actually bought.not Mimestream
  • A household that needs installed Office applications on several machines rather than browser-only editing.not Mimestream

Mimestream

  • A Mac user whose email is entirely Gmail or Google Workspace and wants a faster native alternative to the Gmail web appnot Microsoft 365
  • Someone who finds Apple Mail handling of Gmail labels and search unreliable or confusingnot Microsoft 365
  • A Google Workspace user managing multiple accounts who wants them combined in one native menu bar appnot Microsoft 365
  • A user who wants Gmail-specific filters and search operators without opening a browser tabnot Microsoft 365

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Microsoft 365

  • Business plans are capped at 300 seats, so an organisation that grows past that must move to Enterprise plans, which changes both the price per user and the feature mix at the moment it can least afford a migration project.
  • The compliance capabilities most organisations eventually need, including retention, data loss prevention, advanced eDiscovery and insider risk, sit at the top tier or in add-ons, so the real cost surfaces after an audit or a customer questionnaire rather than at purchase.
  • Annual term subscriptions commit you for the year and month-to-month terms cost measurably more per seat, so the flexibility to reduce seats during a quiet period is bought at a permanently higher rate.
  • Entra ID becomes the identity for everything else the organisation uses, which is the hardest kind of lock-in to put a number on, because leaving means re-federating every connected application rather than simply replacing a word processor.
  • The licensing model is complicated enough that most organisations are either over-licensed or quietly non-compliant, and reconciling it usually requires a partner or a specialist, which is a recurring cost that never appears in the advertised per-user figure.

Mimestream

  • It only works with Gmail and Google Workspace, so it is entirely useless for anyone with an iCloud, Outlook, Yahoo or other IMAP account.
  • It is a subscription with no permanent free tier or lifetime purchase option, so the cost is ongoing for as long as it is used.
  • It is Mac only, so it does nothing for a Windows machine or for mobile email, which still relies on the standard Gmail app or another client.
  • Because it depends entirely on Gmail API access, any change Google makes to that API could affect Mimestream functionality outside the developer control.
  • A user who wants one email client for multiple different providers has to run Mimestream alongside a second app for non-Gmail accounts, rather than consolidating everything in one place.

Pricing, plan by plan

Microsoft 365

$7/month
  • Microsoft 365 Business Basic$7/month
    • Email and calendar with 50 GB mailbox
    • Web and mobile versions of Office apps
    • Microsoft Teams included
  • Microsoft 365 Business Standard$14/month
    • Desktop versions of Word, Excel, PowerPoint, Outlook
    • Email and Teams
    • 1 TB cloud storage per user
  • Microsoft 365 E5$60/month
    • Comprehensive security and compliance
    • All productivity apps
    • Advanced analytics

Mimestream

$4.99/month
  • Mimestream$4.99/month
    • 49.99 USD per year if billed annually
    • Free trial before purchase
    • Covers multiple Gmail or Google Workspace accounts

Which should you pick?

Choose Microsoft 365 if

  • You need office applications.
  • You also want hosted services.
Microsoft 365 review

Choose Mimestream if

  • You need native gmail labels.
  • You work on Mac.
  • You also want gmail filters.
Mimestream review

Questions people ask

Is Microsoft 365 or Mimestream better?
Neither clearly leads. Microsoft 365 starts at $7/month and Mimestream at $4.99/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Microsoft 365 or Mimestream?
Microsoft 365 starts at $7/month and Mimestream at $4.99/month.
Does Microsoft 365 or Mimestream run on more platforms?
Microsoft 365 runs on Web. Mimestream runs on Mac.
What is Microsoft 365 best used for?
Microsoft 365 is most often used for any organisation that wants mail, documents, meetings and identity from one supplier on one bill., a company standardising on single sign-on, where entra id becomes the account other services authenticate against., regulated work that needs retention, legal hold and ediscovery across mail and documents, provided the tier that includes them is actually bought., a household that needs installed office applications on several machines rather than browser-only editing.. Of those, any organisation that wants mail, documents, meetings and identity from one supplier on one bill. and a company standardising on single sign-on, where entra id becomes the account other services authenticate against. are not what Mimestream is typically brought in for.
What can Microsoft 365 do that Mimestream cannot?
Microsoft 365 covers Office applications, Hosted services, Teams, Microsoft Entra ID. Mimestream covers Native Gmail labels, Gmail filters, Fast local search, Conversation threading.

Answered from the vendors’ own pages

Microsoft 365: What is the difference between Microsoft 365 and Office?

Office was a one-off licence for a specific version. Microsoft 365 is a subscription covering the applications and the hosted services together, and when payment stops the applications drop to a reduced state rather than continuing as they were.

Mimestream: Does Mimestream work with Outlook or iCloud Mail?

No. It connects only to Gmail and Google Workspace accounts and cannot be used with any other provider.

Microsoft 365: Is Teams included?

Not automatically for newer customers. Microsoft unbundled Teams and now sells it alongside the suite, so check what a given quotation actually covers.

Mimestream: Is Mimestream free?

No. It is a subscription at 4.99 US dollars a month or 49.99 dollars a year, with a free trial but no permanent free tier.

Microsoft 365: What happens to our files if we stop paying?

The documents remain yours and can be downloaded, but access to hosted mailboxes and sites ends after a retention window, so leaving requires a planned export rather than a cancellation.

Mimestream: Is it available on iPhone or iPad?

No. Mimestream is a Mac-only native app with no iOS version.

Microsoft 365: Is Copilot part of the subscription?

No. It is a per-user add-on on top of the base licence, generally with its own term commitment, and it is priced per seat regardless of how much any individual uses it.

Share

Related pages

More on Microsoft 365

More on Mimestream

Keep looking

Other head to heads