MailKit vs DeepCheck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MailKit
This utility app helps manage incoming emails by automatically sorting them into specified mailboxes based on customizable rules. It supports IMAP accounts and offers various gestures for efficient mail handling and rule management.
- Automatic mail sorting via rules
- IMAP account support
- Customizable sender, subject, and message rules
- Swipe gestures for actions
- Pull-to-refresh and load older mails
- Blacklist functionality
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■MailKit is a kind of mail app(The usage is explained at the online help of the App). MailKit can move incoming mail messages to the mailbox specified by rules. MailKit has no mail sending facility and has only support for IMAP. POP/SMS/MMS are not supported. ■How to connect to an IMAP mail server: To connect an IMAP mail server, just specify your full email address as your login name(username) and the password you log in to your account. If you don't know your login name/password, contact an organization or personnel in charge of the IMAP mail server to get a hostname, user id(name), password. ■Basic operation: * Pull down to Refresh/Long Press to reload&spam filtering * Push up to download older mails at the bottom of message lists *Tap/Swipe to switch accounts Tapping/Swiping the navigation bar of the Mailbox list switches the account if multiple accounts are available. * Tap/Swipe to move around mailboxes (among 'Quick View List') * Move/Delete/Mark mail messages by the toolbar on the navigation bar * Tap/Swipe the navigation bar to turn over mail messages * Add a mail to the blacklist by swiping * Tap a Tab bar to switch the rule view. There are 4 views to show the rules for ‘Sender’, ’Subject’, ‘Message’, ‘Compound’. ■Mail Rules: There are 4 conditional fields for mail rules --- sender, subject, message, compound. Mail rules are only applied for 'INBOX'. To edit or create a mail rule, tap 'Edit' button on the Mailbox list. The selection menu appears, choose 'Rule'. Mail rules for ‘Sender’ will appear. Tap a Tab bar to switch a view. ■Support: To get a further support , contact through the following mail address. support_seimitsu@jcom.home.ne.jp
DeepCheck
Quickly verify an iPhone's condition before buying or selling. Test 26 core functions using official Apple technology to prevent costly mistakes and ensure peace of mind.
- 26 precise hardware checks
- Detailed analysis report
- Official Apple API usage
- Screen pixel testing
- Sensor functionality tests
- Touch and speaker verification
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Buying the new iPhone 17? Trading a used iPhone? Invest just 5 minutes before you deal to prevent costly mistakes! DeepCheck is the most reliable and professional way to verify your precious iPhone's condition. For our launch, get it for a 50% special discount ($4.99) and precisely check 26 core functions using official Apple technology. What can you do with DeepCheck? • 26 Precise Checks: Perfectly test key hardware features like screen pixels, touch, speakers, microphone, and all sensors. • Detailed Analysis Report: Get expert-level insights with Pass Criteria, Measurement Logs, and Reasoning for every single item. • 100% Safe Technology: We only use official Apple APIs, ensuring safety and accuracy. Your data is never collected or stored. Who absolutely needs this! • Sellers: Confidently provide proof by saying, "My iPhone is in perfect condition, and this report proves it." • Buyers: Find hidden defects, avoid scams, and purchase with peace of mind. • New iPhone Buyers: Catch initial defects and make sure you're within the return window. Get the Truth Report for your iPhone with DeepCheck now! (The price will be increased to $9.99 after all features are updated.)
Screenshots
Verdict
The clearest difference is review sentiment: DeepCheck at 100% against MailKit's 0%. DeepCheck also leads on update cadence (every 4 days vs every 4 months). MailKit's advantage is price ($1.99 vs $4.99) and iOS requirement (16.6 vs 18.5). On ads, in-app purchases, monetization model 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
MailKit costs $1.99 and DeepCheck $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MailKit ships an update every 4 months, DeepCheck every 4 days. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.
| Parameter | MailKit | DeepCheck |
|---|---|---|
| Price | $1.99 — better | $4.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 18.5 |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Seimitsusakufu LLC | HYUNSUNG JO |
Customer experience
MailKit
DeepCheck
In-app purchases
MailKit
No in-app purchases
DeepCheck
No in-app purchases








