Is this app coming to the Mac App Store?

Yes. Once v1.0 is released, the app will be made available on the Mac App Store.

Why does this app require macOS Catalina?

Mimestream requires macOS Catalina because it makes use of new APIs and capabilities only available in Catalina.

Mimestream intends to showcase the best that the Mac has to offer, and new versions will generally require the latest version of macOS (allowing for a breathing period for some bug-fixing software updates to be released by Apple).

Does Mimestream work offline?

Yes, Mimestream works when offline. You can read, delete, archive, file, and send messages as you normally would when online, and the changes will sync to the server when you go back online. This architecture also gives you instantaneous interactions when you are on a slow or high-latency connection (like on an airplane).

Note that a limited number of messages are cached on your device. Old messages that have not been cached will not be accessible while you are offline.

What happens if I stop using Mimestream?

You can continue to use Gmail normally. Your email remains on the Gmail servers, and any changes you make in Mimestream are synced back to Gmail as soon as a network connection is available. No Mimestream-specific labels are added to your account.

Is there an iOS version?

macOS is currently the only supported platform. A version for iOS (and iPadOS) is planned for the future.

Does Mimestream support services besides Gmail?

Mimestream currently only supports Gmail and G Suite. Future support for other services is planned, including Office 365, JMAP servers, and IMAP servers.

When will Mimestream support snoozing messages?

Unfortunately, the Gmail API does not currently support snoozing messages, so Mimestream does not offer the feature. Please star the Gmail API bug at https://issuetracker.google.com/issues/109952618 to express your desire for this functionality.

If Google were to add this to the public Gmail API, Mimestream would swiftly add support for Snoozing!

When will Mimestream support scheduled send?

Unfortunately, the Gmail API does not currently support scheduled send, so Mimestream does not offer the feature. Please star the Gmail API bug at https://issuetracker.google.com/issues/140922183 to express your desire for this functionality.

If Google were to add this to the public Gmail API, Mimestream would swiftly add support for scheduled send!


Where is my email data stored?

Mimestream follows the model of a traditional e-mail client: a cache of your recent messages are stored on your device, and the originals remain on the Gmail server. Mimestream communicates directly from your device to Google's APIs, without using an intermediary server. In addition, your account's access tokens stay on your device.

Mimestream's use of information received from Gmail APIs will adhere to Google's Limited Use Requirements.

Where are my email credentials stored?

When you grant Mimestream access to your Google account via the standard OAuth 2.0 flow, Mimestream securely stores the granted tokens directly in your Mac's keychain. Your Google account's password is not stored, and in fact is never even seen by the Mimestream app.

Can you read my email?

No. Mimestream is a local app that stores your data and access tokens directly on your device. Mimestream does not run any servers with access to your email.


What do I do if I've hit a bug?

Please email bugs@mimestream.com to report a bug. Bug reports are extremely helpful and your feedback is very much appreciated!

How do I suggest a feature?

To suggest a feature, please e-mail feedback@mimestream.com.

While every feature requested cannot be implemented, features are prioritized based on user demand, so your feedback and suggestions are very helpful!

How do I contact support?

Please e-mail support@mimestream.com to contact support.


How much does this app cost?

Pricing has not been set yet, but Mimestream will be a paid app.

Why will this app cost money?

Mimestream's core business is developing high quality e-mail software. Instead of monetizing your e-mail data for advertising or market research purposes, Mimestream generates revenue by charging for software licenses.

Do you offer an enterprise site license?

Yes! A site license is a great way to offer Mimestream to all of your employees and boost their productivity, while being confident in the secure handling of your organization's email data and credentials.

Please contact us with how many seats you'd like, and you will get a custom quote.