GMClean vs Mailstrom
GMClean
github.com
Mailstrom
mailstrom.coSide by side
| Figure | GMClean | Mailstrom |
|---|---|---|
| Price from | Free | $5/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 6 |
| Spec score · Email Cleanup Software | 8.5 (#8) | 8.4 (#9) |
| Authentication | It supports app passwords and OAuth2 for Google and Microsoft. | For Gmail, Outlook and Yahoo, Mailstrom says it uses IMAP through OAuth2 so it does not receive the account password. |
| Email providers | It supports Gmail, Outlook, and custom IMAP mailboxes. | The FAQ names Gmail, Outlook, AOL, iCloud, Yahoo, and Microsoft Exchange accounts with IMAP enabled as supported connection examples. |
| Unsubscribe | It supports one-click unsubscribe with RFC 8058 List-Unsubscribe-Post support and bulk unsubscribe. | Its Unsubscribe tool sends unsubscribe requests or opens the relevant web unsubscribe page. |
Plans
Mailstrom
- Basic$9 a month
- Plus$14 a month
- Pro$29.95 a month
- Basic$59.95 a year
- Plus$99.95 a year
- Pro$199.95 a year
In their own words
GMClean
GMClean is a free, self-hosted web tool for scanning email headers, classifying messages, unsubscribing in bulk, deleting email, and exporting data. It works with Gmail, Outlook, and custom IMAP mailboxes, with up to 10 mailboxes connected at once. GMClean fetches headers such as sender, subject, and List-Unsubscribe details without downloading message bodies. It can scan INBOX, Spam, Promotions, Trash, and other IMAP folders. Inbox analysis includes a 0–100 health score based on five weighted factors, sender insights, and email age distribution. Classification uses heuristic rules, with optional Gemini assistance for ambiguous cases. Users can unsubscribe with one click using RFC 8058 support or unsubscribe in bulk; bulk deletion runs in batches of 500 messages. Exports include selected subscriptions with resubscribe links and scanned emails in CSV format. The project documents deployment with npm, Docker, or Docker Compose. It says app data stays in browser IndexedDB and there is no cloud database or telemetry. Credentials are encrypted with AES-256-CBC before storage, and setup requires an ENCRYPTION_SECRET. The repository is MIT-licensed.