(For even more suggestions, see Maximizing Mail: Add-ons for Mac OS X's Mail.) Attachment Tamer Mail doesn’t always handle incoming or outgoing attachments the way I like. Feb 05, 2014  This process is the same for all versions of Mac OS X and with all versions of the Mac Mail app. Outside of general usability, uninstalling Mail plugins can also become a necessary procedure if the Mail application is crashing randomly or generally misbehaving, particularly after a.

1. Mac Os X Mail Client
2. Download Plugins For Mac
3. Apple Mail Plugin

macOS’ built-in Mail application has a system that allows third-party developers to write plugins for the application, giving it new features.

There are several of these plugins worth knowing about if you use Mail.app but want more power of it, without using something like Airmail.

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Here are some of our favorites:

MailButler

MailButler is an extensive plugin that makes a ton of stuff easier to deal with in Mail. With it installed, emails can become tasks within Mail or sent to a service like Todoist. Entire emails can be added as text in Evernote or OneNote.

The plugin can be set up to snooze email for later or even pause fetching of accounts, if you don’t want to be notified of work email over the weekend, for example. Custom signatures complete with images are a breeze to create as well.

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Some more basic features, like reminding a user of a missing attachment and one-click unsubscribing are available too.

While there is a basic free tier, to access all of its features, MailButler requires a subscription. If you pay for a year, it runs €6.50/month. The more expensive Business account runs €24.95/month and includes features that will be more useful in a business context. There is a helpful features matrix on their pricing page.

Mail Act-On

Mail Act-On has three main features.

The first is a powerful workflow management tool. Once rules have been set up, filing messages can be done with a single keystroke.

Secondly, Mail Act-On can manipulate outgoing messages. Receipts can be automatically placed as Cc or Bcc, based on rules, and the plugin can ensure you’re always sending mail from the correct account, which is something Mail.app struggles to do on its own.

Lastly, Mail Act-On can be used to create templates for fast, canned replies.

Mail Act-On has a free 30-day trial, and can be purchased for $30.

MailTags

Made by the same developer as Mail Act-On, MailTags can be used to apply keywords to messages for faster and more precise searching. A message’s color can be changed based on project or importance. If you’re a Gmail user, these tags can be seen on any devices, as they are compatible with GMail’s Label system.

MailTags is $30, but a bundle that also includes Mail Act-On can be had for $50.

SpamSieve

The $30 SpamSieve is a well-loved Mail.app plug-in that has been around a long, long time. Software to compress video files mac.

Mac Os X Mail Client

The plugin runs a local spam filter that is compatible with any email provider. If you use IMAP, changes made to messages on Mail.app on the Mac can be pushed to your iOS devices as well. Complete with a blocklist, whitelist, sophisticated custom rules, and more, it’s a great way to reign in spam if your email provider can’t.

Download Plugins For Mac

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Apple Mail Plugin

Apple released Mac OS X 10.6.1 about a week after Snow Leopard shipped, and only days after many Mail plug-in developers added support for the new operating system to their products. Thanks to a change in the way Snow Leopard's Mail application handles plug-ins, however, that minor update means developers have to update their plug-ins every time Mail gets updated, too.
The problem for developers is that Apple changed how Mail interacts with plug-ins in Snow Leopard. Since there's a chance that a plug-in could cause problems with the application, they are all disabled when Mail is updated.
'One important change in Mail 4.X (10.6) with respect to plugins is that each maintenance release of Mail will disable plugins that are not specifically compatible with the maintenance release,' Mail Act-On developer Scott Morrison said on his indev blog.
Ken Aspeslagh from ecamm agreed. 'Each new version of Mail and the associated Message framework includes a unique code. Plug-ins have to explicitly declare themselves compatible with each new version,' Mr. Aspeslagh told The Mac Observer. 'There is some sense to this as plug-ins are closely tied to the inner working of Mail, and stand the chance of breaking when Mail.app updates. Apple didn't want to take this chance, so now they automatically disable all plug-ins with each update.'
While the change translates into headaches for developers that now have to release compatibility updates every time Apple modifies Mail, the changes they'll have to make to their plug-ins will be trivial in most cases. Assuming their plug-ins don't break some functionality in Mail, they simply need to update an identifier code number in their plug-in to match the new number in the Mail application.
'This new method seems like it will require an update of every plug-in every time Apple updates Mail,' Mr. Aspeslagh said.
The process seems pretty straight forward and simple for developers and end users alike, but it does break most automated update tools like Sparkle. Sparkle checks for updates after a plug-in loads and alerts the user if a newer version is available. Since Mail automatically disables all plug-ins that don't have a matching code number, Sparkle-enabled plug-ins won't get checked.
The change also means that plug-in versions will be tied to specific point releases of Mail, so using a newer version of a plug-in with an older version of Snow Leopard's Mail probably won't work, either.
The upside of Apple's plug-in compatibility changes in Mail means that end users will hopefully see fewer crashes related to third-party add-ons. The down side is that they probably won't want to install system updates until after they know compatible versions of the plug-ins they rely on are available.