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Productivity · head to head

Capacities vs Mimestream

Capacities logo

Capacities

Productivity

A studio for your mind with object-based notes

From
Free
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

  • Only Capacities has a free tier, so it costs nothing to try first.
  • Each has a real cost: Capacities pro plan pricing not prominently displayed on website; 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: Capacities covers Object-based notes, Mimestream covers Native Gmail labels.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Capacities and Mimestream actually diverge.

Attributes where Capacities and Mimestream differ
AttributeCapacitiesMimestream
Starting priceFree$4.99/month
Pricing modelUnknownPer user per month
Free tierYesNo
PlatformsWeb, macOS, Windows, Linux, iOS, AndroidMac
Founded2020Unknown

Identical on both: 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 Capacities

  • Object-based notes
  • Daily notes
  • Properties and relations
  • Graph view
  • AI assistant
  • Readwise
  • Web clipper
  • GDPR

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.

Capacities

  • Productivitynot Mimestream
  • Collaborationnot Mimestream
  • Task managementnot Mimestream
  • Organizationnot Mimestream

Mimestream

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

Where each one falls short

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

Capacities

  • Pro plan pricing not prominently displayed on website
  • Smaller community and ecosystem compared to Notion or Obsidian
  • Limited third-party integration marketplace

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

Capacities

Free
  • FreeFree
    • Unlimited spaces and objects
    • Device synchronization
    • Unlimited custom object types
  • Pro$10/month
    • Everything in Free
    • Unlimited notes
    • Advanced graph views
  • Believer$149.88/year
    • Everything in Pro
    • Beta access to new features

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 Capacities if

  • You need object-based notes.
  • You want to start without paying.
  • You work on Web, macOS, Windows, Linux, iOS, Android.
  • You also want daily notes.
Capacities review

Choose Mimestream if

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

Questions people ask

Is Capacities or Mimestream better?
Neither clearly leads. Capacities starts at Free and Mimestream at $4.99/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Capacities or Mimestream?
Capacities has a free tier; the other does not. Paid plans start at Free for Capacities and $4.99/month for Mimestream.
Does Capacities or Mimestream run on more platforms?
Capacities runs on Web, macOS, Windows, Linux, iOS, Android. Mimestream runs on Mac.
Can I use Capacities for free?
Yes. Capacities has a free tier, so you can try it without paying. Mimestream starts at $4.99/month.
What is Capacities best used for?
Capacities is most often used for productivity, collaboration, task management, organization. Of those, productivity and collaboration are not what Mimestream is typically brought in for.
What can Capacities do that Mimestream cannot?
Capacities covers Object-based notes, Daily notes, Properties and relations, Graph view. Mimestream covers Native Gmail labels, Gmail filters, Fast local search, Conversation threading.

Answered from the vendors’ own pages

Capacities: What platforms does Capacities support?

Capacities is available on Web, Desktop (macOS, Windows, Linux), and Mobile (iOS, Android), allowing seamless work across devices.

Source
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.

Capacities: Does Capacities have a free plan?

Yes, Capacities offers a free plan with unlimited spaces, objects, and blocks, device synchronization, unlimited custom object types, and 5GB media uploads total.

Source
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.

Capacities: What AI features does Capacities include?

Capacities includes an AI Assistant available on Pro and higher plans for brainstorming, summarization, and contextual Q&A about your notes.

Source
Mimestream: Is it available on iPhone or iPad?

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

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