Best email client for small business on Mac

The best email client for a small business on a Mac depends on whether more than one person answers the same inbox. If you run the business alone, or you're the founder juggling several accounts, Alrighty puts them in one inbox and keeps the junk out, but it has no team features. If your business runs on Microsoft 365, Outlook is the pick. If a team shares an inbox such as support@ or sales@, Missive or Front are built for that, and Spark is the lower-cost way to share. Superhuman suits teams on Gmail or Outlook that pay for speed, eM Client suits a one-time price per device, and Apple Mail is free.

Most lists of business email apps mix two kinds of product: personal mail apps, where each person reads their own mail, and shared inbox tools, where a team assigns and answers the same messages. This page says which is which, what each costs per person, and which accounts each one takes.

How we checked

We read each app's own pricing, help and download pages, and Microsoft's documentation, on November 3, 2026. Every fact about another company links to the page it came from. Prices are in US dollars, and most vendors show only the yearly price. We compared the price per user, whether the app has shared inboxes, which accounts it takes, and whether it has a Mac app. Alrighty is our app, and it's listed first, though it is the one app here with no team features.

The apps at a glance

App	Price per user	Shared inboxes	Accounts it takes	Kind of app
Alrighty	14-day trial, then Free or Pro	No	iCloud, Gmail, Outlook, Microsoft 365	Personal
Outlook + Microsoft 365	Business Standard $14	Yes, shared mailboxes	Microsoft 365, Outlook.com, Gmail, iCloud, IMAP	Personal
Spark	Plus $99/yr, Pro $199/yr	Yes	IMAP, iCloud, Exchange, Outlook, Yahoo, Google	Personal, team features
Superhuman	$25 or $33 a month, yearly	Not named	Gmail and Outlook only	Personal, team features
Missive	$14 to $36 a month, yearly	Yes, from Starter	Gmail, Outlook, IMAP, SMS, WhatsApp	Shared inbox
Front	From $25 a month, yearly	Yes	Office 365, Gmail, custom email	Shared inbox
eM Client Business	$25.10/device/yr (10 devices)	Not named	Office 365, Exchange, Google Workspace	Personal
Apple Mail	Comes with macOS	No	iCloud, Gmail, Exchange, other	Personal

Do you need a shared inbox, or just a mail app?

A shared inbox lets several people see one address's mail, assign a message to someone, leave comments the customer never sees, and know who already replied. You need one when two or more people answer the same address. If each person answers only their own mail, a personal mail app is enough, and it costs less.

There's a middle path if you're on Microsoft 365. A shared mailbox there is free: Microsoft says it "can store up to 50 GB of data without assigning a license to it." Each person who opens it needs their own licensed mailbox, it "supports a maximum of 25 users," and "you can't give people outside your business" access (Microsoft). A shared mailbox has no assignments or internal comments. For those, you need a tool like Missive or Front.

Alrighty: best for a founder or solo operator with several accounts

Alrighty is a personal mail app for Mac, Windows and Linux. It has no shared inboxes, no assignments, no comments and no team billing. Each person who uses it reads their own mail. Say that first, because a business that needs a team inbox should look further down this page.

Where it fits a small business is the person who runs it. Many founders and solo operators have a work address on Microsoft 365 or Gmail, a personal iCloud or Gmail address, and an old Outlook.com account, and they read all of them every day. Alrighty puts iCloud, Gmail, Outlook.com and Microsoft 365 accounts in one inbox, and one search covers them all.

• Stop mail. One click ends a sender's mail. Alrighty unsubscribes in every way the message offers, archives their mail, and moves their new mail out as it arrives. A business address collects cold outreach fast, and this is the one action that ends it. See how Stop mail works, and for more ways, how to stop cold emails.
• Clean up. It lists the senders you probably don't want, such as scams, cold outreach and newsletters you never open, so you can stop them all at once.
• Phishing checks. A message that is sure to be phishing goes to Junk. A likely one stays with a warning. For fake invoices and other scams, see how to stop scam emails.
• Search that finds what you remember. Type it in your own words. "When is my flight" finds the airline's confirmation even though it never says "flight." Ask a question and get the answer with the emails it came from.
• Your own AI. Claude, ChatGPT's desktop app, Codex, Cursor or a local model can read and search your mail, and work in a window you watch. Nothing sends until you click Send. See how to let Claude read your email.
• Suggested replies. A draft in your voice, written from what you sent that person before. You send it.

Where your mail goes. Your mail stays with iCloud, Google or Microsoft. Alrighty keeps its copy and its search index on your Mac, and your passwords and sign-ins stay on your Mac, encrypted with a key from your system's keychain. When you're signed in, AI features send only the emails they need to Alrighty's server, which passes them to an AI model (OpenAI's for answers and replies). Opening a reply starts a suggested draft by itself, and Clean up sorts senders in the background, sending each sender's address and up to three of their newest emails. Connecting your own AI is off until you turn it on. Signed out, nothing goes to Alrighty's server. If clients' mail is in your inbox, decide whether that's fine before you sign in.

Microsoft 365 work accounts. They use Sign in with Microsoft. If your company stops staff from approving apps themselves, an admin must approve Alrighty first. It opens your own mailbox, not shared mailboxes. Our best email app for Outlook accounts page explains how that approval works.

Price. A 14-day trial with no card, then a Free plan or Pro.

What it can't do. No team features of any kind, and no calendar. On a Mac, it needs Apple silicon. There's no iPhone or web app. It adds iCloud, Gmail and Outlook accounts only, so Yahoo, Fastmail and other IMAP accounts are out. It's a new app, without a long track record.

Pick it if you're the one person who reads every inbox in the business, and you want them in one place without the cold outreach.

Outlook with Microsoft 365: best if the business runs on Microsoft 365

Outlook for Mac works with "Microsoft 365, Outlook.com (including Hotmail and MSN), Gmail, Yahoo! Mail, iCloud, IMAP, and POP accounts" (Mac App Store), and has mail and calendar in one app.

Price per user. Microsoft's new prices, from July 1, 2026, are $7.00 for Business Basic, $14.00 for Business Standard and $22.00 for Business Premium, per user, and prices vary by country (Microsoft).

Check the plan before you buy. Outlook for Mac on a work account needs "a license assigned by your IT administrator that includes the desktop versions" of the apps. Microsoft lists "Microsoft 365 Business Standard, Microsoft 365 Business Premium, Microsoft 365 Apps for business" for small businesses (Microsoft). Business Basic isn't on that list, so staff on Basic use Outlook on the web or another Mac app. Apps for business doesn't include email at all (Microsoft).

Shared mailboxes. Open one from File > Open > Shared Mailbox. "Outlook for Mac currently supports only Full Access permissions for shared mailboxes" (Microsoft).

What it can't do. Assign a message to a teammate or leave an internal comment. A shared mailbox is one mailbox that several people open. Copilot features are for "Microsoft 365 Copilot–licensed users" (Microsoft).

Pick it if your business already pays for Microsoft 365 Business Standard or Premium and needs shared mailboxes and calendars.

Spark: best low-cost team features

Spark runs on Mac, iPhone, Windows and Android and takes "IMAP, iCloud, Exchange, Outlook, Yahoo!, Google" accounts (Spark). Its team page offers a shared inbox, where you "assign emails and track their progress," shared threads, comments on an email, and shared drafts you write "in real-time" with teammates (Spark).

Price per user. Plus is $10 a month or $99 a year, and Pro is $20 a month or $199 a year. Pro adds read statuses and "advanced team collaboration." Plus and Pro each have a seven-day free trial in the app, and the FAQ says Spark +AI is off by default (Spark).

Where your mail goes. Some features "require our server-side email processing to work." For Exchange and custom IMAP accounts, Spark stores your login and says "we additionally encrypt your password in the database" (Spark). What it can't do. Its team pricing page doesn't say clearly which plans include shared inboxes. Check in the trial.

Pick it if a few people need to share threads and drafts, and you want one app on Mac, Windows and phones for less than a shared inbox tool. See our Spark alternatives if the servers matter to you.

Superhuman: best for fast teams on Gmail or Outlook

Superhuman is "built for teams that use Gmail or Outlook" (Superhuman) and runs on Mac, Windows, iPhone and Android (Superhuman).

Price per user. Starter is $25 per member a month and Business $33, both billed yearly and "up to 25 seats." Enterprise has no public price. The plans page lists "Shared Conversations," "Team Comments," "Shared Drafts" and "Team Read Statuses," but doesn't name a shared inbox (Superhuman).

What it can't do. Add iCloud, Yahoo or other IMAP accounts. Its pages name no free trial. Our Superhuman alternatives page lists apps that take iCloud.

Pick it if every person on the team is on Google Workspace or Microsoft 365, and you'll pay for speed and AI.

Missive: best shared inbox for a small team

Missive is a shared inbox with "desktop apps (macOS and Windows)," plus web, iPhone and Android apps (Missive). It takes Gmail and Google Workspace, Outlook and IMAP accounts, and also WhatsApp, Messenger, Instagram and SMS (pricing).

Price per user. Starter $14, Productive $24 and Business $36 per user a month, billed yearly. The page has a monthly toggle, but the monthly prices didn't show when we read it. There's no free plan: "Try Missive free for 30 days. No credit card required." Team inboxes come with Starter and up. Each user can connect up to 10 personal accounts and 5 shared accounts (pricing).

What it can't do. Run for free, even for one person.

Pick it if a small team answers the same addresses and you want assignments, comments, and texts and chats in the same place.

Front: best for customer support teams

Front is a shared inbox for teams that answer customers, with apps for macOS, Windows, iPhone and Android (Front). It connects "Office 365, Gmail" and custom email. Every plan has a shared inbox, assignments, internal comments, shared drafts and message templates (pricing).

Price per seat. Starter is $25 a seat a month "up to 10 seats," Professional $65 a seat "up to 50 seats," and Enterprise $105, all billed yearly. The page shows no monthly prices (pricing).

What it can't do. Bill monthly; the page shows yearly prices only. Starter stops at 10 seats and connects one channel type, and the next plan is $65 a seat. For one person who just reads mail, it's more than you need.

Pick it if your support or sales team needs to assign every message and track who answered it.

eM Client Business: best one-time price per device

eM Client has mail, calendar, contacts and tasks, and its home page names Google Workspace, Office 365, Outlook and Exchange among its accounts (eM Client). Version 11 connects to Microsoft 365 through Microsoft Graph (eM Client).

Price. Business is priced by device. For 10 devices the page shows $250.95 a year ($25.10 each), with the AI add-on and a "Commercial license," or $382.95 once ($38.30 each), without AI. Both include "Volume discounts & license manager" and a "30-day free trial & 30-day money-back guarantee." The Free plan allows no commercial use, and Personal is for "Individual use only" (pricing).

What it can't do. Its pricing page names no shared inbox features. It's priced per device, so one person with a Mac and a laptop needs two licenses. Its pages don't say which Macs or macOS versions it supports.

Pick it if you want an Outlook-style app with a calendar, and you'd rather pay once per computer than every month per person.

Apple Mail: best free choice for a one-person business

Apple Mail comes with every Mac and adds "iCloud, Gmail (Google), Exchange, school, work, or other" accounts (Apple). It can unsubscribe you from lists and block up to 3,000 senders (Apple).

What it can't do. It has no team features. If your business mail is on Microsoft 365, note that Apple's support page says Exchange accounts on macOS may stop syncing from October 2026 unless your admin adds Apple Internet Accounts to the EWS allow list. Apple plans a fix "in a future macOS 27 update" (Apple). Its search relies on Spotlight, and our Apple Mail search guide covers what to do when it breaks.

Pick it if you run the business alone, your mail is on iCloud, Gmail or an Exchange server, and you want free.

How to choose

• You run the business alone and read several accounts: Alrighty.
• The business runs on Microsoft 365 and needs shared mailboxes and calendars: Outlook with Business Standard or Premium.
• A few people share threads and drafts, on a budget: Spark.
• Everyone is on Gmail or Outlook and wants speed: Superhuman.
• A small team answers shared addresses, plus texts and chats: Missive.
• A support team assigns and tracks every message: Front.
• One-time price per computer, with a calendar: eM Client Business.
• Free, one person: Apple Mail.

For the wider list, see the best email app for Mac. If your accounts are a mix of providers, see the best email app for multiple accounts. If you want templates, send later and tracking in Apple Mail, see our Mailbutler alternatives.

Questions

Does Microsoft 365 Business Basic include Outlook for Mac?

No. Microsoft lists Business Standard, Business Premium and Apps for business as the small business plans that include desktop Outlook for Mac. A license for web and mobile access only gives an error when you add the account. Staff on Business Basic can use Outlook on the web or another Mac mail app.

Do I have to pay for a Microsoft 365 shared mailbox?

No, up to 50 GB. Microsoft says a shared mailbox needs no license of its own, but each person who opens it needs a licensed mailbox. It supports up to 25 users, and people outside your business can't open it.

What is the difference between a shared mailbox and a shared inbox app?

A shared mailbox is one mailbox that several people open, as in Outlook. A shared inbox app such as Missive or Front adds assignments, internal comments and a record of who answered. Pick a shared inbox app when more than one person answers the same customers.

Is Alrighty good for a small business team?

Not for a team inbox. Alrighty has no shared inboxes, assignments or team billing, and each person reads only their own mail. It suits the founder or solo operator who reads several accounts and wants unwanted mail gone.

Which business email apps have a Mac app?

All the apps on this page do. Missive offers desktop apps for macOS and Windows, and Front lists Front for macOS on its download page. Superhuman, Spark, Outlook and eM Client have Mac apps too.