Best Apple Mail Extensions to Manage Your Emails on Mac

Undoubtedly, Mac OS X mail programs are bundled with all the basic email needs and functionalities. But, if you need more than just basic capabilities then what? Well, in such a case, switching to best Apple mail extensions is a good idea as it helps manage emails like a specialist.

These small plugins boost your productivity without occupying much space. They have a simple interface, innovative labels, multipurpose filters, enhanced security, new message notifications, and a lot more.

Here’s a quick list of best Apple mail plugins that will turn your Apple Mail into a pretty powerful email client. Check them out.

10 Best Apple Mail Extensions

1. Moom

Moom apple mail extension

Having trouble viewing content on your Mac? Use Moom one of the best Mac mail extensions to move and zoom windows with this nifty add-on. This Apple mail extension offers a wide array of option, once you install it move your mouse over the green zoom button on any window and perform the following actions:

  • Move & Zoom to Full Screen
  • Move & Zoom to Left Half
  • Move & Zoom to Right Half
  • Move & Zoom to Top Half
  • Move & Zoom to Bottom Half
  • Revert to original dimensions

Know more:- Use Smart Reply For Instant Reply In Gmail

Besides this, drag the half/width icons to zoom Quarter, drag those icons for multiple displays. Plus, use Grid to resize and move windows by dragging mouses across segments. You can even zoom windows more by dragging them to screen edges.

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2. MailSteward



MailSteward is an ultimate Apple mail extension, email manager as it is bundled with umpteen features to make your mailing experience enjoyable. Using this Apple mail plugin, you can archive emails from multiple accounts into a secure, single and searchable database. It has an easy-to-use interface and even imports and export email from Postbox for Mac and Apple Mail. Besides this, the thing that makes MailSteward Pro best Mac mail extension is added enterprise-level support for MySQL and Amazon cloud Aurora DB.

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3. MailButler

MailButler apple mail plugin

Your personal assistant to manage your mails. It lets you add additional information to your emails by attaching notes, adding to-do items and reminders. You can even mark them as done once the task is completed. Besides, attach notes and tasks to outgoing emails, schedule emails to be sent later on a specific date and time. Additionally, with this one of the best Apple mail plugins get notified when a recipient opens your email, prepare template and save time, undo sent, attachment reminder, snooze and follow up reminder.

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4. MailTags

MailTags apple mail extension

Fourth in the list is MailTags. This best Mac mail extension helps organize messages by keywords, projects, importance, color, due data and more. You can create a rule to automatically assign tags to all incoming messages, search mails via mail tags and tag old mails. MailTags Apple mail plugin display tags in both message list and full message view and it operates with most IMAP server, Gmail servers, and Exchange servers.

Know more:- 10 Useful Gmail Extensions to Boost your Productivity

5. Mail Act-On

Mail Act-On apple extension for mail

Effortlessly manage your emails with Mail Act-On. A popular Mac mail extension that offers powerful keystroke rules and message filing interface, allowing you to take quick actions on your mail. The Apple mail plugin manages your outbox rules, you can automatically CC or BCC messages depending on rule criteria. Even you can choose where to archive an mail while sending it and reply with the template to save time.

6. SpamSieve

 SpamSieve- mac mail extension

Keep your inbox spam-free with SpamSieve best Mac mail extension. A local spam filter that saves your time by filtering spams emails from almost all email clients for Mac. It uses Bayesian spam filtering to provide accurate results. It learns and adapts to your mails to block almost all the junk without messing with the good message. Plus, it automatically maintains a whitelist to make sure that previous interactions aren’t marked as spam. Besides this, you can quickly and easily control SpamSieve from within Apple Mail, Airmail, Entourage, MailMate, Mailsmith, Outlook, Postbox, PowerMail, and more. Additionally, it integrates with your contacts to put their messages directly in the inbox.

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7. MsgFiler


Declutter your inbox and save time with a keyboard-based email filing application MsgFiler. Just type to filter down the mailboxes and press return to file sorted messages in Mail. Navigate, select, move and copy mails without taking your hands off the keyboard. Say goodbye to dragging and dropping emails and say hello to more time by your side to do important work with this best Mac mail extension.

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8. DockStar


Keep an eye on your email messages with DockStar. This extension adds an extra badge to Mail’s dock icon thus helping you to sort unread messages from more than one mailbox.

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9. MailHub


A smart Apple mail plugin to revolutionize your email management. It intelligently learns as you work and keeps your email organized. Further, this best Mac mail extension allows users to set reminders on emails for easy follow-ups, auto files sent an email to the mailbox and optionally fill the related inbox with sent message. Plus, it colors messages and swap to/from field for sent messages, creates a new mailbox when new filing category comes up. Preview changes before making them/undo changes as required.

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10. Herald


Go beyond Mac’s built-in notifications with Herald. It allows performing common actions directly from within the notification windows, including message deleting, replying to them and marking as read.  Besides this, Herald best Mac mail extension has a Message Grouping feature that helps to cut down on clutter and allows to read the full message by using scrollable window.

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These Apple mail plugins will surely enhance your Mac mail functionality and will make things easy. No need to remember when to reply or send an email. As these best Apple plugins will help stay organized. Leave all your mail burden to these best Apple mail extensions and use your time on other more important things. All your mails organized, managed and synced in one place.


  • Trevor Deck
    I think these are great, but I have one specific need I’d like to see fulfilled. I’d love to have a way to attach a Post It note to an email, so that when I open it again, I can see the Post It I put on it, with my 3 or 4 word summary, a quick thought, or follow up questions for when I have time to get back to it. Seen anything like this? Know of anyone developing it?

    2 years ago Reply
  • RObert
    Hello Trevor, yoy might be looking for smallcubed mailsuite. I am just tryining this, seems promising.

    2 years ago Reply
  • mirko
    is there a plug in that allows me to PERMANENTLY change the default font color in my ‘new messages’?

    2 years ago Reply
  • Netmammal
    What I am looking for right now is a plug-in which would give me back all of the Mac Mail features which were lost when I upgraded to Catalina. I’m thinking, being able to control column width, which fields are in the columns, and the order. I would love to have the option to get rid of “Top Hits” when I search through mail.

    I am sure there other things which got eliminated when Apple streamlined Mail to be more iOS-like, which could be brought back. I can’t figure out how to adjust scrolling amount in Mail specifically. Was that there before, or is it my faulty memory? That is the horrible thing about eliminating features without pointing it out to customers, it makes them distrust and project things on to Apple that may not even be true!

    2 years ago Reply
  • Jan Steinman
    Unfortunately, Herald stopped working after High Sierra, and according to its web page, there is no plan to port it to Mojave and further. in Mojave refuses to load it.

    Anyone know of any Herald alternatives? I LOVED that thing!

    2 years ago Reply
  • Jill
    Mailbutler is not working properly anymore since a few weeks. So sad. It was great but not anymore.

    2 years ago Reply
  • MB
    MailHub was amazing… and by “was” I mean to say that it stoped working with macOS Big Sur and there are no plans for it to reemerge.

    1 year ago Reply

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