When comparing Gmail vs Org mode for Emacs, the Slant community recommends Org mode for Emacs for most people. In the question“What are the best personal Knowledge Base apps?” Org mode for Emacs is ranked 1st while Gmail is ranked 15th.
Ranked in these QuestionsQuestion Ranking
Pro Best support for Gmail features
Since both the Gmail Android app and Gmail itself is made by Google, the app supports all features Gmail offers (like labeling/starring) and gets new features implemented early - usually as soon as they are announced.
Pro Incredibly fast, advanced & predictive search
Gmail brings much of the functionality and power of Google's search engine to the app's search. You can use operators such as label:, is:, OR, has: among others, define date ranges, limit search to specific groups and so on. And, you can do it all amazingly fast. The search will also try to predict what you're trying to search for before you've even finished your query and offer up those results.
Pro Google Drive integration
The app allows inserting files from Drive straight to email or uploading attachments to Drive before sending them out. It will also notify if the person you're sending the file can open the file or if you should change the sharing settings for that file beforehand. Finally, you can choose which one of your Google accounts you want visible in the app.
Pro Google Calendar integration
Pro Comes bundled with Android for free
Not only is the application free, it comes bundled with the Android OS by default so you don't even have to bother downloading it.
Pro Tabs to automatically organize your e-mail
Gmail offers the ability to automatically organize your mail into specific categories:
Each of the categories can be disabled and you can move your mail around from category to category or set your own rules which sender should be put in which category.
Pro Safely automatically displays images
The app does not require a confirmation to show images as Google now hosts the images on their own servers making it safe. You can still disable the automatic displaying of images in the settings if you wish.
Pro Threaded conversations
Pro Libre/open source
Pro Cross platform
Emacs runs on all platforms, Windows, Linux, OSX, even Android and IOS
Pro Exports data to PDF, LaTeX, HMTL and other
You can even build presentation or blog from your data
Pro Can be as simple or as complex as you want
Org mode started out as a simple outlining/note taking app. Then each outline heading can optionally be a TODO list item. And if you desire, you can add SCHEDULE and DEADLINE dates. (Schedule being the date you'd like to start the item.) You can customize the TODO states to add things like DELEGATED, WAITING, BLOCKED, etc.
Pro Supports tables with formules (quite powerful!)
Pro Inline image displaying
Pro Uses Emacs
Pro Plain text data storage
Pro Free but copyrighted
Con Sorting mail by Unread is unintuitive
Nearly every other mail app has a clear way to sort mail by Unread. In Gmail app you can do that only by typing “label:unread” in the search field.
Con Very limited HTML composing
Composing of HTML formatted mails is very limited. No inline images and only some basic text formatting options
Con No intrinsic p2p encryption option
Con Too heavy
It should be lightweight.
Con Limited notification buttons
Con Uses Emacs (for those who prefer vi, menus, etc.)
Con Obtuse documentation
The documentation assumes a level of understanding of basic Emacs usage that not all users may have.