Comparison

Mailbox Email Client for Gmail vs Happy Inbox

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

Head to head
About

Mailbox Email Client for Gmail

This app streamlines Gmail management with AI-powered summaries, multi-account support, and smart scheduling. Its intuitive design and fast swipe actions help users focus on important messages and boost productivity.

Highlights
  • AI email summarization
  • Multi-account management
  • Smart email scheduling
  • Lightning-fast swipe actions
  • Threaded conversations
  • Modern, clean interface
Features
Read full description

Mailbox for Gmail - Smart Email Client Experience Gmail like never before with AI-powered simplification and beautiful design. Mailbox for Gmail transforms your email experience with intelligent features that help you focus on what matters. Manage multiple Gmail accounts, simplify complex emails with AI, and stay organized with powerful productivity tools. KEY FEATURES AI Email Simplification • Get instant summaries of long emails • Extract key points automatically • Powered by OpenAI for accurate understanding • Save time reading newsletters and reports Multi-Account Management • Seamlessly switch between multiple Gmail accounts • Each account keeps separate preferences • Instant switching - no re-authentication needed • Secure OAuth2 authentication with Google Smart Email Scheduling • Snooze emails to reappear at the perfect time • Schedule messages for later review • Keep your inbox focused on what's urgent Productivity Features • Lightning-fast swipe actions • Star important messages • Archive, delete, or snooze with a swipe • Thread conversations for context Beautiful Design • Modern, clean interface built with SwiftUI • Smooth animations and intuitive navigation • Customizable text sizes for comfortable reading • Dark mode support (coming soon) Privacy & Security • Secure OAuth2 authentication • Your credentials never stored on servers • Data encrypted with iOS Keychain • No email content shared with third parties Built for iOS • Native iOS 15+ performance • Optimized for all iPhone sizes • Offline access to cached emails • Fast sync with Gmail servers PERFECT FOR • Professionals managing multiple email accounts • Anyone overwhelmed by long email threads • Users who want AI-powered productivity • People seeking a modern Gmail experience TRY DEMO MODE Not ready to connect your account? Try our built-in demo mode with realistic fake emails to explore all features risk-free! REQUIREMENTS • iOS 15.0 or later • Gmail account(s) • OpenAI API key (for AI features - optional) GET STARTED IN SECONDS 1. Sign in with your Gmail account 2. Customize your preferences 3. Start managing emails smarter Download Mailbox for Gmail today and experience email productivity reimagined! .

About

Happy Inbox

Effortlessly clear your Gmail inbox of spam, junk, and clutter with a single tap. Identify senders overwhelming your inbox and save time on manual cleaning. Contribute to environmental sustainability by reducing your digital carbon footprint.

Highlights
  • Delete spam and clutter with one tap
  • View senders ranked by email count
  • Identify inbox-filling senders
  • Save time on manual cleaning
  • Reduce carbon footprint
Read full description

“With Happy Inbox, clearing out unwanted emails from your Gmail has never been simpler! Happy Inbox is your easy-to-use tool to delete spam, junk and clutter with just one tap.” Over 6million+ emails are deleted and 1000's of users world wide trust Happy Inbox. "Happy Inbox is a free app that lets you easily delete all unwanted emails and clear out years of clutter" - Williams "Happy Inbox helps you easily delete unwanted emails from your inbox and clear out old clutter with just one click" - Sara Happy Inbox lets you view all your senders ranked by the number of emails received, so you can decide to: 1. Delete with a single click. 2. Easily identify which senders are filling up your inbox. 3. Save time and avoid the hassle of manual inbox cleaning. Happy Inbox is available for Gmail and starts at just $9.99/year which is less than $0.8/month. Lets contribute to the planet's sustainability and environment by deleting emails. Do you know an email generates on an average of 10g of carbon emission? We saved 27,500,000 gms of carbon foot print till date. Support : info@happy-inbox.com Website : www.happy-inbox.com We use Apple's standard paid apps license agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mailbox Email Client for Gmail3 screens
Happy Inbox4 screens

Verdict

The call

The clearest difference is in-app purchases: Mailbox Email Client for Gmail at none against Happy Inbox's 1. Mailbox Email Client for Gmail also leads on ads (none vs shown) and ratings volume (31 vs 1). Happy Inbox's advantage is rating (5.0 vs 4.5) and iOS requirement (15.1 vs 17.6). On price, update cadence 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. Happy Inbox sells 1 in-app purchase, starting at $7.99 per year. Mailbox Email Client for Gmail asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Happy Inbox holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Mailbox Email Client for Gmail has 31 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Mailbox Email Client for Gmail ships an update every 5 weeks, Happy Inbox every 3 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard6 real differences · 4 level
Mailbox Email Client for Gmail versus Happy Inbox: the parameters behind the verdict, then further details
ParameterMailbox Email Client for GmailHappy Inbox
PriceFreeFree
Rating4.5 (31 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings31 — better1
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size9 MB58 MB
Age rating4+4+
DeveloperIndigogoDPSL Happy Inbox Private Limited

Customer experience

Mailbox Email Client for Gmail

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%

Happy Inbox

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mailbox Email Client for Gmail

No in-app purchases

1 purchases

Happy Inbox

Subscriptions1
  • Happy Inbox Premium$7.991 Year

Questions

Is Mailbox Email Client for Gmail free?
Mailbox Email Client for Gmail is free to download, with no in-app purchases.
Is Happy Inbox free?
Happy Inbox is free to download, with in-app purchases available.
Which has better reviews, Mailbox Email Client for Gmail or Happy Inbox?
Happy Inbox is rated higher. Mailbox Email Client for Gmail averages 4.5 out of 5 from 31 ratings, while Happy Inbox averages 5.0 from 1 ratings.
Do Mailbox Email Client for Gmail or Happy Inbox have ads?
Happy Inbox shows ads; Mailbox Email Client for Gmail does not.
Which is updated more often, Mailbox Email Client for Gmail or Happy Inbox?
Mailbox Email Client for Gmail ships an update every 5 weeks, and Happy Inbox every 3 weeks. Most recently, Mailbox Email Client for Gmail was updated on October 24, 2026 and Happy Inbox on October 16, 2026.

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