Mailstrom is an inbox cleanup tool from 410 Labs that bundles related messages so you can act on them in groups - unsubscribe, delete, archive, or block thousands at once. It is deliberately a manual power tool: it amplifies your own sorting rather than guessing what is important. It works across Gmail, Outlook, Yahoo, AOL, and IMAP.

How does PureBox compare to Mailstrom?

Mailstrom hands you a fast manual toolkit and stays out of your judgment. PureBox does the first pass for you: it finds important mail, proposes Archive and Trash suggestions in plain language with a reason for each, and waits for you to approve before applying changes to Gmail. Mailstrom is control-first; PureBox is review-first.

Is PureBox cheaper than Mailstrom?

PureBox Pro is $7.99 monthly or $59.90 yearly after a no-card Free scan with sample results from up to 1,000 emails. Mailstrom starts around $59.95 per year for one account and rises with account count and mailbox size. For a single Gmail account, the two are close on price; PureBox keeps one simple plan.

Does Mailstrom use AI like PureBox?

No. Mailstrom positions itself against AI guessing - it is a manual power tool by design. PureBox uses classification to propose suggestions and writes a plain-language reason for each one, but nothing moves until you approve. If you specifically do not want AI making suggestions, Mailstrom may suit you better.

Can I switch from Mailstrom to PureBox?

Yes. Connect Gmail, run the no-card Free scan, and review PureBox suggestions before applying them. There is nothing to migrate, because approved actions apply to messages already in Gmail. If you cancel Mailstrom, your mail stays in Gmail and remains reversible there.

PureBox vs Mailstrom

A calmer alternative to Mailstrom - suggestions, not a control panel

Mailstrom gives you a powerful manual toolkit to slice through mail yourself. PureBox does the first pass in Gmail: important mail first, cleanup suggestions next, and Apply only after you approve.

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No-card Free scan · Review before applying

It reads the inbox first

Mailstrom amplifies manual sorting. PureBox proposes Archive and Trash suggestions with a plain-language reason, so the first pass is ready to review.

Important-first, not just bulk

PureBox shows the mail worth reading before you approve cleanup for the bulk around it.

Time saved, not emails counted

Progress shows up as minutes and hours back, not a running tally of how many messages you sliced.

When PureBox fits better than Mailstrom

You want the tool to do the first pass and suggest cleanups, not hand you a power panel.
You want important mail surfaced before you approve cleanup.
You are on Gmail and want a calm, review-first workflow.
You want suggestions that reflect how your own inbox behaves - the senders you read versus the ones you skip - rather than an average inbox.

When Mailstrom may fit better

You prefer a fully manual power tool and explicitly do not want AI suggestions.
You need multi-provider support now (Outlook, Yahoo, AOL, IMAP).
You manage very large multi-account inboxes and want filter-driven bulk control.

We'd rather you find the right tool than the wrong subscription.

At-a-glance comparison

As of June 2026. Sources linked in the per-competitor profile.

Capability	PureBox	Mailstrom
Important-first view before cleanup	PureBox advantage: Yes - finds important emails before cleanup	Manual bundles and smart filters
Bulk unsubscribe	Not offered today	Yes
Archive or Trash after review	PureBox advantage: Yes - review first, then Apply	Yes
Action history and Gmail visibility	PureBox advantage: Yes - action history plus Gmail remains auditable	Acts directly on the mailbox
Time-saved metric shown to user	PureBox advantage: Shows reclaimable time before review and reclaimed time after Apply	No
Free scan or trial	PureBox advantage: No-card Free scan with inbox-specific results	No-card free trial
Paid pricing	$7.99/month or $4.99/month billed yearly	From $59.95/year (1 account) to $199.95/year (20 accounts)
Mailbox fit today	Gmail and Google Workspace. Other providers are not supported yet.	Gmail, Outlook, Yahoo, AOL, IMAP
Data resale or third-party data sharing	PureBox advantage: No data resale or advertising use	States it does not use or share your data
Permissions requested from Gmail	Secure Google Sign-In; restricted Gmail scopes	OAuth2 mailbox access (no password)
Custom rules	PureBox advantage: Optional - not required to start	Smart filters (200 to 1,000 by plan)
Mobile access	Mobile-friendly web app (no native app yet)	Web app

Important-first view before cleanup
PureBox
PureBox advantage: Yes - finds important emails before cleanup
Mailstrom
Manual bundles and smart filters
Bulk unsubscribe
PureBox
Not offered today
Mailstrom
Yes
Archive or Trash after review
PureBox
PureBox advantage: Yes - review first, then Apply
Mailstrom
Yes
Action history and Gmail visibility
PureBox
PureBox advantage: Yes - action history plus Gmail remains auditable
Mailstrom
Acts directly on the mailbox
Time-saved metric shown to user
PureBox
PureBox advantage: Shows reclaimable time before review and reclaimed time after Apply
Mailstrom
No
Free scan or trial
PureBox
PureBox advantage: No-card Free scan with inbox-specific results
Mailstrom
No-card free trial
Paid pricing
PureBox
$7.99/month or $4.99/month billed yearly
Mailstrom
From $59.95/year (1 account) to $199.95/year (20 accounts)
Mailbox fit today
PureBox
Gmail and Google Workspace. Other providers are not supported yet.
Mailstrom
Gmail, Outlook, Yahoo, AOL, IMAP
Data resale or third-party data sharing
PureBox
PureBox advantage: No data resale or advertising use
Mailstrom
States it does not use or share your data
Permissions requested from Gmail
PureBox
Secure Google Sign-In; restricted Gmail scopes
Mailstrom
OAuth2 mailbox access (no password)
Custom rules
PureBox
PureBox advantage: Optional - not required to start
Mailstrom
Smart filters (200 to 1,000 by plan)
Mobile access
PureBox
Mobile-friendly web app (no native app yet)
Mailstrom
Web app

Privacy and data stance

PureBox

Minimum Gmail OAuth scopes. We do not sell your data and we do not use it for advertising. Disconnect at any time. Read our privacy policy.

Mailstrom

Mailstrom states it does not use or share your data and connects through OAuth2, so it never holds your password. Processing happens on Mailstrom-managed infrastructure. See their privacy policy for current language.

Pricing

PureBox

No-card Free scan shows sample results from your Gmail, with a hard ceiling of 1,000 emails across Attention, Archive, and Trash. Pro is full inbox coverage + ongoing relief at $7.99/month or $59.90/year ($4.99/month effective).

See full pricing

Mailstrom

No-card free trial, then annual plans: about $59.95/year for one account (up to 10,000 emails), $99.95/year for three accounts, and $199.95/year for twenty accounts.

Mailstrom pricing →

As of June 2026.

What you actually do in PureBox

1. Connect your Gmail with minimum permissions.
2. Review suggestions, sender by sender, before anything moves.
3. Apply approved Archive, Trash, and label actions to Gmail.

Your Gmail stays as it is until you approve a suggestion. After Apply, the action happens in Gmail and appears in PureBox History. Google handles sign-in, so your Gmail password stays with Google.

PureBox dashboard showing the Attention, Cleanup, and Track surfaces with time-saved metric. — The PureBox dashboard surfaces Attention, Cleanup, and Track on one screen - the first pass is already done before you decide.

Frequently asked questions

What is Mailstrom?
Mailstrom is an inbox cleanup tool from 410 Labs that bundles related messages so you can act on them in groups - unsubscribe, delete, archive, or block thousands at once. It is deliberately a manual power tool: it amplifies your own sorting rather than guessing what is important. It works across Gmail, Outlook, Yahoo, AOL, and IMAP.
How does PureBox compare to Mailstrom?
Mailstrom hands you a fast manual toolkit and stays out of your judgment. PureBox does the first pass for you: it finds important mail, proposes Archive and Trash suggestions in plain language with a reason for each, and waits for you to approve before applying changes to Gmail. Mailstrom is control-first; PureBox is review-first.
Is PureBox cheaper than Mailstrom?
PureBox Pro is $7.99 monthly or $59.90 yearly after a no-card Free scan with sample results from up to 1,000 emails. Mailstrom starts around $59.95 per year for one account and rises with account count and mailbox size. For a single Gmail account, the two are close on price; PureBox keeps one simple plan.
Does Mailstrom use AI like PureBox?
No. Mailstrom positions itself against AI guessing - it is a manual power tool by design. PureBox uses classification to propose suggestions and writes a plain-language reason for each one, but nothing moves until you approve. If you specifically do not want AI making suggestions, Mailstrom may suit you better.
Can I switch from Mailstrom to PureBox?
Yes. Connect Gmail, run the no-card Free scan, and review PureBox suggestions before applying them. There is nothing to migrate, because approved actions apply to messages already in Gmail. If you cancel Mailstrom, your mail stays in Gmail and remains reversible there.

Ready for a calmer Gmail than Mailstrom can give you?

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