SpamBlocker vs Trimbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpamBlocker
This app helps manage unwanted emails by reassigning spam mailboxes and filtering incoming messages. It uses machine learning and rule-based systems to identify and block junk mail, supporting IMAP/POP3 accounts. It does not have mail sending capabilities.
- Spam/Trash mailbox reassignment
- Machine learning spam filtering
- Rule-based filtering (sender, subject)
- IMAP/POP3 support
- HTML image blocking
- Multi-account support
Read full descriptionHide full description
■SpamBlocker supports Spam/Trash mailbox’s reassignment. Some (IMAP) mail servers support a machine learning spam filtering by using the mail data in the spam mailbox. If the spam mailbox matches between SpamBlocker and the mail server, SpamBlocker can feedback its spam filtering result to the mail server. Then the spam mail traffic can be reduced. ■SpamBlocker provides a spam filtering feature SpamBlocker(the usage is explained at the online help in the App) can filter out spams(junk mails) from the incoming mail messages by a spam filter which is generated by the SpamBlocker's built-in machine learning engine. SpamBlocker also supports 'rule based' filtering by specifying "sender's mail address" or "subject"'s substring. SpamBlocker supports IMAP/POP3 and can access only Inbox, spam box, trash box. SpamBlocker has no mail sending facility. As for the POP3 mail filtering, SpamBlocker has to get started before other mailers, otherwise spams will be downloaded to other mailers because POP3 has no synchronization mechanism . SpamBlocker supports HTML image blocking. SMS/MMS are not supported. SpamBlocker adapts the advertising free application model, but it has no resident toolbar, so the client area with an advertisement banner isn't narrower than other standard iOS applications. ■Main Features: •Fast machine learning engine optimized for a mobile device ◦Learn ham and spam mail messages to generate a spam filter ◦Spam filtering time is very short compared with mail messages downloading time. ◦Multi-language. In this version, only English and Japanese are supported. European languages will be OK if it's based on alphabets. ◦Multi-account ■How to connect to an mail server: To connect an 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 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 the navigation bar to move around mailboxes * Move/Delete/Mark mail messages by the toolbar on the navigation bar * Tap/Swipe the navigation bar to turn over mail messages * Swipe To POP3 server to move back a mail to POP3 server. * Add a mail to the blacklist/spam learning data by swiping a cell ■Spam filtering: SpamBlocker 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, SpamBlocker is ready to start judging which mail is spam or not. Set the spam filter switch on the account setting if you want to start the spamfiltering. 8. Check the filtering result on Monitor. 9. Correct errors and 'Pull down to Refresh" or "Long press on the navigation bar", re-learning starts and your spam filter gets smarter. Repeat the steps(8-9) until no errors are found. ■Spam Rule Filtering: Please don't forget about turning on "Spam Rule switch" at the account setting after setting rules. ■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 ■Copyright: Some of icons in this software are designed by Icons8 (http://icons8.com)
Trimbox
This app helps you declutter your inbox by identifying and unsubscribing from unwanted mailing lists with a single click. You can also bulk delete old emails from specific senders to free up storage space and focus on important messages.
- One-click unsubscribe from mailing lists
- Bulk delete old emails from senders
- Identify mailing list and spam emails
- Block unwanted senders
- Regain inbox storage space
- Securely stored personal data
Read full descriptionHide full description
Trimbox is the fastest way to clean your email. It finds all of the mailing lists in your inbox so you can unsubscribe with just 1 click. Just click "Unsubscribe" and Trimbox will remove that sender from your inbox. You can also choose to bulk delete all of the old emails from that sender, saving tons of storage space in your inbox. Here's why Trimbox is the best email cleaner and the safest way to stop spam emails: - Easily spot mailing list emails and spam. - Unsubscribe from all email lists with just 1 click (free for your first 10; unlimited with subscription) - Erase old junk emails all at once by deleting spam - Clean your inbox and regain inbox storage space - Block spam emails so you can focus on the emails that matter - Personal data is securely stored on your device only - Connect unlimited email accounts. Trimbox Premium - an auto-renewable subscription - unlocks unlimited unsubscribes so you can clean your entire inbox. We understand what it's like to constantly feel distracted by unwanted emails. Your inbox is your personal space and Trimbox can help you take it back. Block emails you don’t want and protect your inbox by stopping spam and mailing lists. Erase unwanted emails from annoying senders and save inbox space. Trimbox makes cleaning your inbox as easy as checking your email! By using Trimbox, you agree to our terms of service, as outlined by standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Trimbox at 4.7 against SpamBlocker's 2.8. Trimbox also leads on review sentiment (52% vs 14%) and update cadence (every 9 days vs every 3 months). SpamBlocker's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases 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
Both are free to download. SpamBlocker sells 1 one-off in-app purchase and Trimbox sells 15 in-app purchases, starting at $4.19 per 7 days. Whichever you choose, the download price is not the number that matters.
Trimbox holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Trimbox has 5.9K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 14% of SpamBlocker's written reviews are positive against 52% of Trimbox's.
SpamBlocker ships an update every 3 months, Trimbox every 9 days. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.
| Parameter | SpamBlocker | Trimbox |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (6 ratings) | 4.7 (5.9K ratings) — better |
| Positive reviews | 13.9% of reviews | 52.1% of reviews — better |
| Number of ratings | 6 | 5.9K — better |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 7 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Seimitsusakufu LLC | Trimbox LLC |
Customer experience
SpamBlocker
Trimbox
Bugs and requests
SpamBlocker
Not enough reviews yet to summarise bugs or requests.
Trimbox
Reported bugs
3 issues- Failing to delete or unsubscribe from emails as expected
- Syncing issues with certain email providers
- Deleting entire email history instead of just unwanted messages
Requested features
4 requests- Ability to select and unsubscribe from multiple emails at once
- Support for more email providers beyond just Gmail
- Improved error handling and recovery options
- Clearer communication around subscription model
In-app purchases
SpamBlocker
- Remove Ad&Limitation$0.99
Trimbox
- Unlimited access$4.197 Days
- Unlimited access$5.597 Days
- Unlimited access$5.997 Days
Show 12 moreShow fewer
- Unlimited access$7.997 Days
- Unlimited access7 Days trial$7.997 Days
- Unlimited access$9.991 Month
- Unlimited access$13.991 Month
- Unlimited access$15.991 Month
- Unlimited access$19.991 Year
- Unlimited access$27.991 Year
- Unlimited access$29.991 Month
- Unlimited access$31.991 Year
- Unlimited access7 Days trial2 variants$39.991 Year
- Unlimited access3 Days trial$39.991 Year
- Unlimited access$89.991 Year









