Comparison

Inbox Zero vs Slashy Mail

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Inbox Zero

This email client offers a fast, offline-capable experience for Gmail and Outlook, featuring an AI assistant for managing your inbox. It allows for easy unsubscribing, smart inbox organization, and quick replies.

Highlights
  • AI email assistant
  • Offline access
  • Unsubscribe from senders
  • Split inbox by tabs
  • Quick swipe actions
  • Scheduled sending
  • Undo send
Features
Read full description

Inbox Zero is a fast, native email app for Gmail and Outlook, with an AI assistant built in. FAST, EVEN OFFLINE Your mail is stored on your iPhone, so your inbox opens instantly and stays usable without a connection. Changes sync in the background. SPLIT INBOX Split your inbox into tabs for the mail you care about. Each tab shows its unread count, so you know where to look first. UNSUBSCRIBE IN SECONDS See who keeps emailing you and choose Keep, Auto-archive or Unsubscribe for each sender, one by one or in bulk. Unsubscribing is free. ASK AI Chat with the Inbox Zero assistant from your inbox or any email. Ask about your mail, or tell it how your email should be handled. NEVER MISS A REPLY Get a notification when an email needs your reply, and tap straight into the conversation. TRIAGE WITHOUT FRICTION Swipe to mark done or read, and jump straight to the next email after you archive. Mark a whole list done at once, and choose your own swipe actions. WRITE AND REPLY Reply inline with attachments, photos and dictation. Drafts show up in your list and open right where you left off. Schedule messages with Send later, and undo a send for 30 seconds. ALL YOUR ACCOUNTS Connect several Gmail and Outlook accounts and read them together or one at a time. BUILT FOR IPHONE A Liquid Glass design, emails that stay readable in dark mode, and remote images loaded through a privacy proxy. Inbox Zero requires a paid subscription. New users receive a 7-day free trial. Monthly and annual plans renew automatically unless canceled at least 24 hours before the end of the current billing period. Manage or cancel your subscription in your Apple ID account settings. Privacy Policy: https://www.getinboxzero.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Slashy Mail

A streamlined email client designed for Gmail users. It enables rapid inbox management, efficient searching, and quick replies. Features like reminders and scheduled sending help manage follow-ups effectively.

Highlights
  • Fast inbox triage
  • Quick search
  • Rapid replies
  • Compose with attachments
  • Reminders
  • Scheduled send
Features
Read full description

Slashy is a fast, focused email client for Gmail and Outlook. Quickly triage your inbox, search threads, reply fast, and compose with attachments. Use reminders and scheduled send to stay on top of follow-ups. Connect your Google or Microsoft account to access your existing mailbox and manage email efficiently from mobile.

Screenshots

Inbox Zero4 screens
Slashy Mail4 screens

Verdict

The call

The clearest difference is in-app purchases: Slashy Mail at none against Inbox Zero's 2. Slashy Mail also leads on update cadence (every 3 days vs weekly) and iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Inbox Zero sells 2 in-app purchases, starting at $19.99 per month. Slashy Mail asks for nothing beyond the download.

UpkeepUpdate frequency

Inbox Zero ships an update weekly, Slashy Mail every 3 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Inbox Zero versus Slashy Mail: the parameters behind the verdict, then further details
ParameterInbox ZeroSlashy Mail
PriceFreeFree
Rating—4.8 (16 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—16 — better
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.016.4 — better
Further details — not scored
Size35 MB71 MB
Age rating4+12+
DeveloperInbox Zero Inc.Dhruv Roongta

In-app purchases

2 purchases

Inbox Zero

Subscriptions2
  • Inbox Zero Starter Monthly$19.991 Month
  • Inbox Zero Starter Annual$199.991 Year
None

Slashy Mail

No in-app purchases

Questions

Is Inbox Zero free?
Inbox Zero is free to download, with in-app purchases available.
Is Slashy Mail free?
Slashy Mail is free to download, with no in-app purchases.
Do Inbox Zero or Slashy Mail have ads?
Neither Inbox Zero nor Slashy Mail shows ads.
Which is updated more often, Inbox Zero or Slashy Mail?
Inbox Zero ships an update weekly, and Slashy Mail every 3 days. Most recently, Inbox Zero was updated on October 31, 2026 and Slashy Mail on November 5, 2026.

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