EmailSlim vs Mailstrom
EmailSlim
emailslim.com
Mailstrom
mailstrom.coSide by side
| Figure | EmailSlim | Mailstrom |
|---|---|---|
| Price from | Free | $5/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Plans published | 4 | 6 |
| Spec score · Email Cleanup Software | 7.7 (#16) | 8.4 (#9) |
| Bulk cleanup | Users can review grouped senders and bulk delete emails, with deletions initiated only after user approval. | It lets users delete, archive, and move messages by the hundreds or thousands. |
| Security | The terms state that EmailSlim uses encryption in transit and at rest, access controls, and regular security audits. | The FAQ says IMAP passwords are stored with 256-bit salted AES encryption and OAuth is used when available. |
| Unsubscribe | EmailSlim offers one-click unsubscribe using standard List-Unsubscribe headers when available, but says the feature may not work for every sender. | Its Unsubscribe tool sends unsubscribe requests or opens the relevant web unsubscribe page. |
Plans
EmailSlim
- Free scanFree
- Annual SubscriptionPrice not published
- One-Time CleanupPrice not published
- Set & Forget AutomationPrice not published
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
EmailSlim
EmailSlim is a web service for finding storage-heavy messages in Gmail and Microsoft email accounts and cleaning them up. It analyzes metadata rather than email body content, ranking senders and domains by the total storage their messages use. Users can inspect grouped senders and approve bulk deletions; messages first move to Trash or Deleted Items. One-click unsubscribe uses standard List-Unsubscribe headers when available, though it may not work for every sender. Supported accounts include Gmail, Outlook, Hotmail, Live.com, MSN, and Microsoft 365. Connections use Google OAuth or Microsoft OAuth, and access can be revoked in account settings. EmailSlim says operations require explicit user consent and initiation. It describes encryption in transit and at rest, access controls, and regular security audits. The free scan costs nothing and covers the first 500 emails without a credit card or subscription. Paid pricing is from $2.50/mo. One-time, annual, and monthly automation plans use mailbox tiers up to 150k emails, with exact amounts shown after sign-in. Monthly automation is described as daily inbox cleanup.