Comparison

MailKit vs DeepCheck

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

■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

About

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.

Highlights
  • 26 precise hardware checks
  • Detailed analysis report
  • Official Apple API usage
  • Screen pixel testing
  • Sensor functionality tests
  • Touch and speaker verification
Features
Read full description

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

MailKit4 screens
DeepCheck4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

MailKit costs $1.99 and DeepCheck $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
MailKit versus DeepCheck: the parameters behind the verdict, then further details
ParameterMailKitDeepCheck
Price$1.99 — better$4.99
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better18.5
Further details — not scored
Size4 MB4 MB
Age rating4+4+
DeveloperSeimitsusakufu LLCHYUNSUNG JO

Customer experience

MailKit

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

DeepCheck

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MailKit

No in-app purchases

None

DeepCheck

No in-app purchases

Questions

Is MailKit free?
MailKit costs $1.99, with no in-app purchases.
Is DeepCheck free?
DeepCheck costs $4.99, with no in-app purchases.
Do MailKit or DeepCheck have ads?
Neither MailKit nor DeepCheck shows ads.
Which is updated more often, MailKit or DeepCheck?
MailKit ships an update every 4 months, and DeepCheck every 4 days. Most recently, MailKit was updated on October 19, 2026 and DeepCheck on October 13, 2026.

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