parM@iler vs MailCat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
parM@iler
Manage your email with this application that allows you to send, receive, and organize messages. Set up custom rules for filtering and reorganizing emails, and attach files or images. Supports multiple accounts and provides options for message display and security.
- Send and receive email
- Organize messages with rules
- Attach images and files
- Supports multiple email accounts
- Customizable message display
- Secret mode for messages
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With ParM@iler, you can send, receive, and organize email messages. Special instruction - Even if you select IMAP, the software does not perform synchronization with the server. Specification - You can set up rules to filter incoming messages or reorganize messages you've already received. - The secret mode ON The mail set beforehand as is displayed from the list and it is possible to do without. - The header of the received mail can be displayed. - Cooperation between 'eM@il Sender'. (You can send image up to 20 x 20 in size.) - Up to five files from Photo Library can be attached. - Sent and received e-mails with all accounts appear in the same list. (You can also display only the e-mails with an individual account.) - Up to 10 e-mail accounts can be registered. - The signature of each account can be set. - If you set the software that you do not delete e-mail draft after sending an e-mail, you can utilize the draft as a template. - When receiving it, all data is downloaded. - The image of the received attached file can be preserved in the photograph library. - You can prevent a new message view and a receiving message view from rotating. - You can set the number of e-mails to display in the list from 10 to 50. - Compatible with the Vertical/Horizontal Layout entry. - Compatible exclusively with the SMTP authentication (LOGIN/CRAM-MD5). - Compatible with IMAP/POP3. - Compatible with SSL/TLSv1. The mail server verified. - Gmail - AOL - iColud Restrictions - Even when an e-mail is received, the software does not delete the e-mail on the server. If you do not delete received e-mails, access of unread e-mails becomes slow, so delete the e-mails using other mail applications. - Even if you select IMAP, the software does not perform synchronization with the server. The software refers to INBOX for the received mail - The send mail is save only in the application. - The paste in the photo cannot be done with iPhone OS 3.0 or later. - You cannot perform quotation when you replay HTML e-mail. - Spotlight search is not supported. - Push notification is not supported. - When the software receives an e-mail, the mail on the server becomes the already read e-mail. - The software transforms an attached file into JPEG when sending the e-mail and deletes its positional information. - You cannot set and cancel the software into the secret mode in the landscape mode.
MailCat
This app helps organize your inbox by automatically categorizing emails using machine learning and custom rules. It can filter spam and move messages to designated mailboxes, supporting IMAP accounts.
- Machine learning spam filtering
- Rule-based email categorization
- IMAP account support
- Move emails to specified mailboxes
- Blacklist and spam learning data
- Multiple account switching
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■MailCat is a Mail Categorizer: MailCat is a Mail Categorization App. MailCat has two kinds of categorization method --- a machine learning categorization and a rule based categorization. MailCat can filter out spams from the incoming mail messages by the machine learning categorizer, and move mail messages to the specified mailbox by rules. MailCat 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/spam learning data by swiping *Tap a Tab bar to switch the rule view. There are 4 views to show the rules for ‘Sender’, ’Subject’, ‘Message’, ‘Compound’. ■Spam filtering: MailCat generates a spam filter by learning from spam and ham messages in INBOX. Just follow the steps, you can have your own spam filter. 1. Tap 'Edit' button in Monitor. 2. Pick up several mail messages by tapping each table cell. 3. Tap "SPAM" button on the command bar. 4. Likewise pick up mails, and "HAM" button on the command bar. 5. "Pull down to Refresh" or "Long press on the navigation bar" triggers Machine learning, then a spam filter will be generated. 6. Repeat the steps(1-5) until the number of spams and hams reaches about 16. 7. After learning 16 spams and 16 hams, MailCat starts judging which mail is spam or not. 8. Check the filtering result on Monitor. 9. Correct errors and 'Pull down to Refresh" or "Long press( 2sec) on the navigation bar", re-learning starts and your spam filter gets smarter. Repeat the steps(8-9) until no errors are found. ■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 . ■Other usage: Please visit support page. http://www.seimitsusakufu.com/iOS/mailapps/en/support.html ■Support: To get a further support , contact through the following mail address. support_seimitsu@jcom.home.ne.jp
Screenshots
Verdict
parM@iler and MailCat both sit at 1.0 stars, but that hides the real split: 22% of parM@iler's written reviews are positive against 0% of MailCat's. parM@iler also leads on price ($1.99 vs $3.99) and iOS requirement (12.0 vs 16.6). On rating, ratings volume, update cadence and ads 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
parM@iler costs $1.99 and MailCat $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 1.0 for parM@iler against 1.0 for MailCat. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 22% of parM@iler's written reviews are positive against 0% of MailCat's.
parM@iler ships an update every 2 months, MailCat every 4 months. The most recent releases landed on August 12, 2026 and June 5, 2026 respectively.
| Parameter | parM@iler | MailCat |
|---|---|---|
| Price | $1.99 — better | $3.99 |
| Rating | 1.0 (1 ratings) | 1.0 (1 ratings) |
| Positive reviews | 22.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 11 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Partire Inc. | Seimitsusakufu LLC |
Customer experience
parM@iler
MailCat
In-app purchases
parM@iler
No in-app purchases
MailCat
No in-app purchases









