# Mailstrom

> Web-based inbox cleaner for bulk deleting and unsubscribing

Mailstrom is a web-based inbox cleaning tool from 410 Labs that connects to an existing mailbox over IMAP. It groups messages into bundles by sender, subject, date or size so that hundreds or thousands can be deleted, archived or moved at once, and it adds unsubscribe, block and automatic rules to keep the inbox clear afterwards. It works with Gmail, Outlook, Yahoo, AOL, iCloud and other providers that support IMAP.

- **Category:** Email Apps
- **Made by:** 410 Labs
- **Website:** https://mailstrom.co
- **Runs on:** Web
- **Facts last checked:** Oct 9, 2026

## Pricing

Mailstrom is a paid product with a free trial, starting at $9 per month, or $59.95 per year (Basic, 1 email account).

- **Pricing model:** Free trial
- **Free plan:** None.
- **Free trial:** Free trial, no credit card: a snapshot of up to 5,000 inbox messages, of which 25% can be deleted, archived or moved.

| Plan | Price | What you get |
| --- | --- | --- |
| Basic | $9 per month, or $59.95 per year | 1 email account with up to 10,000 emails, 200 smart filters, unlimited email removal, and Chill, Expire and Block. |
| Plus | $14 per month, or $99.95 per year | 3 email accounts with up to 250,000 emails and 400 smart filters. |
| Pro | $29.95 per month, or $199.95 per year | 20 email accounts with unlimited inbox size and 1,000 smart filters. |

Read from https://mailstrom.co/subscribe on Oct 9, 2026. Prices change, so confirm with Mailstrom before buying.

## Ways to pay less

- **Annual plans are marked as saving 40%** (Annual discount): The subscribe page labels annual billing as saving 40%: Basic is $59.95 a year against $9 a month, Plus $99.95 against $14 and Pro $199.95 against $29.95. Source: https://mailstrom.co/subscribe

## Key features

- **Bundles of related mail:** Groups inbox messages by sender, subject, date and size so that tens, hundreds or thousands of them can be deleted, archived or moved to a folder in one action.
- **Unsubscribe:** From the Mailing Lists tab, Unsubscribe sends a request email to the list owner. If the list gives no unsubscribe address, its web page opens in a new tab instead.
- **Block:** Removes the selected messages and creates a rule that keeps future mail from the same sender, mailing list or subject out of the inbox. Available to subscribers.
- **Chill and Expire:** Chill takes messages out of the inbox and returns them on a date you choose. Expire removes mail from a sender or mailing list after a set period. Both need a subscription.
- **Automatic move rules:** A move can be saved as a rule, so future messages that match a sender or subject are filed into the chosen folder as they arrive. Subscribers' mail is loaded continuously.
- **Undo and task history:** Actions are carried out by your email service and are not permanent: deleted mail goes to its trash, and an Undo feature reverses any command from the task list.

## Good for

- Clearing thousands of old messages out of a neglected inbox
- People who want to choose what goes themselves instead of relying on AI sorting
- Cleaning several mailboxes: Pro covers 20 email accounts

## Worth knowing

- It runs in the browser only; the site lists no mobile or desktop apps.
- The free trial is a one-time snapshot of up to 5,000 messages, and only 25% of them can be deleted, archived or moved.
- It works over IMAP, so POP-only accounts and Exchange servers without IMAP enabled cannot be connected.
- Basic is capped at 1 email account and 10,000 emails, and the FAQ says folders other than the inbox cannot be organized yet.

## Works with

Gmail, Outlook, Yahoo Mail, AOL, iCloud, Microsoft 365

**Tags:** Inbox filtering, Workflow automation

## Alternatives

- [Clean Email](https://toolgpa.com/tools/clean-email): Inbox cleaner for bulk deleting, unsubscribing and auto rules. [Compare](https://toolgpa.com/compare/clean-email-vs-mailstrom)
- [Unroll.Me](https://toolgpa.com/tools/unroll-me): Free tool to block or roll up subscription emails. [Compare](https://toolgpa.com/compare/mailstrom-vs-unroll-me)
- [Leave Me Alone](https://toolgpa.com/tools/leave-me-alone): Unsubscribe from mailing lists and screen unwanted senders. [Compare](https://toolgpa.com/compare/leave-me-alone-vs-mailstrom)
- [SaneBox](https://toolgpa.com/tools/sanebox): AI email filtering that works inside the email app you already use. [Compare](https://toolgpa.com/compare/mailstrom-vs-sanebox)
- [Inbox Zero](https://toolgpa.com/tools/inbox-zero): Open source AI email assistant for Gmail and Outlook. [Compare](https://toolgpa.com/compare/inbox-zero-vs-mailstrom)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026:

- https://mailstrom.co/
- https://mailstrom.co/subscribe
- https://mailstrom.co/faq
- https://mailstrom.co/terms
- https://410labs.com/

Page: https://toolgpa.com/tools/mailstrom
Listed by ToolGPA (toolgpa.com).