Made for Mac · Works with Apple Mail

Big inbox.
Small victories.

Turn your inbox into a stack you can finish. Handle one email at a time. Reply, move it to a folder, snooze it, or send it to Trash.

Handling 20 emails a day adds up over time. Want to do more or start smaller? You can adjust the size of each stack.

See how a stack works →

stackof20 showing a garden invitation, four completed emails, and sixteen remaining in the stack.
A native Mac app · macOS 14 or laterYour existing Apple Mail accountsYour pace. Your batch size.
How it works

Little steps. A lighter inbox.

01 / CHOOSE AN ACCOUNT

Start small.

Choose an account already set up in Apple Mail, check your mailbox destinations, and open a stack. Twenty is a starting point, not a rule.

02 / MAKE YOUR MOVE

Give each email a home.

Reply and archive, move to an existing folder, snooze until tomorrow, or send it to Trash. Skip for Now leaves a message undecided.

03 / FINISH YOUR STACK

Done feels good.

Finish a stack, then stop for the day or start another. A few minutes each day can help you get your inbox organized.

A closer look

Inside stackof20

Reply and Archive composer with a reply to Jamie and a Garden planting notes text attachment.

Reply, then file it away.

Write a reply, add an attachment, and choose Send & Archive. The original moves to Archive after the reply is confirmed in Sent.

View full-size screenshot →
Completed stack showing twenty handled emails and the options to come back tomorrow or start the next twenty.

Finish a stack.

You’ve finished this batch. Stop for the day or choose another stack. There may still be mail in your inbox.

View full-size screenshot →
Daily stack settings showing a batch size of twenty, a nine AM snooze time, and the optional confetti checkbox.

Choose your settings.

Choose 1 to 100 messages for new stacks, set tomorrow’s local wake-up time, and switch the confetti celebration on or off.

View full-size screenshot →
Keyboard settings listing shortcuts for Reply, Refresh, Move, Snooze, Trash, Skip, and Settings.

Keyboard shortcuts.

Use Command-key shortcuts for everyday actions. The Keyboard tab lists them in the app, and the user guide explains how the Move picker works.

View full-size screenshot →

Read the step-by-step user guide →

Know where you are

A stack is a batch, not your whole inbox.

“Completed”

The decisions you’ve finished in this stack, including snoozing for later. It is not the position of the email you’re reading. Skip for Now does not add to it.

“Refresh Remaining Messages”

Updates the unfinished portion with eligible Inbox messages. Your completed count stays the same; snoozed emails remain in their own review.

“Snoozed”

A separate place to revisit emails you deferred. Wake All makes them ready now and opens that review without adding undecided Inbox emails.

Understand the counts and controls →

Your inbox is your business

Your mail. Your Mac. Your pace.

We don’t receive your inbox or reply content. stackof20 has no ads, analytics, or tracking. Reply drafts and attachment copies stay on your Mac; optional iCloud sync carries settings and progress metadata between devices.

Read our privacy policy →

Less in your inbox.
More day ahead.

Twenty emails at a time. A little lighter every day.

Get to know stackof20 →