Do you read my email content?

No. We only access metadata such as message size, labels, and dates. Email bodies are never read or stored.

Are my emails permanently deleted?

Emails are moved to the Gmail Trash folder. Gmail purges the Trash folder after 30 days, giving you a 30-day window to undo any actions.

Smart Mailbox Cleaner Blog

Tips, guides, and tutorials on Gmail inbox management, email cleanup, and storage optimization.

How to Mass Delete Thousands of Emails in Gmail (Without Crashing) — Learn the fastest and safest way to bulk delete thousands of emails in Gmail without your browser freezing. Clear out inbox clutter in seconds.
Gmail Storage Full? How to Clear Space Without Paying — Stop paying for Google One. Learn how to quickly find and delete large attachments to fix the "Gmail Storage Full" error permanently.
How to Automatically Delete Promotional Emails in Gmail — Tired of marketing spam? Learn how to auto-delete promotional emails in Gmail and keep your inbox permanently clean.
How to Mass Unsubscribe and Delete All Past Emails in Gmail — Cut ties with annoying senders permanently. Learn how to bulk unsubscribe and instantly delete all past emails from specific domains in one click.
How to Find and Delete Large Attachments in Gmail Quickly — Stop digging through old emails. Use our automated scanner to instantly group, review, and delete massive email attachments to free up Gmail storage.
How to Delete All Emails from One Sender in Gmail — Learn how to filter and permanently delete every single email from a specific sender, person, or domain in your Gmail account.
How to Automatically Delete Old Emails in Gmail — Set it and forget it. Learn how to configure automated rules to permanently delete emails older than 1 year, 6 months, or 30 days.
How to Safely Undo a Bulk Delete in Gmail (Restore Labels) — Accidentally deleted the wrong emails? Learn how to recover bulk deleted emails and restore their original Gmail labels.
How to Manage Google Workspace Email Storage Quotas (For Admins) — Are your employees hitting their Workspace storage limits? Learn how Domain Admins can use Smart Mailbox Cleaner to reduce enterprise storage costs.
Prevent Bouncing Emails: Use Guardian Auto-Clean Thresholds — Never miss an important email because your storage is full. Learn how to set Guardian thresholds to automatically delete junk when you hit 95% capacity.
How to Manage and Clean Multiple Gmail Accounts at Once — Stop switching browser profiles. Learn how to connect, monitor, and clean up to 5 different Gmail accounts from a single dashboard.
How to See Exact Email Counts Before Deleting in Gmail — Stop guessing. Learn why Gmail hides your total email count and how our Custom Scan builder shows you exact metrics before you hit delete.
How to Mass Delete All Unread Emails in Gmail — Got 10,000 unread emails giving you anxiety? Learn the safest way to target and bulk delete unread messages while keeping important read ones.
How to Delete All Social Media Notification Emails in Gmail — Facebook, Twitter, and LinkedIn emails clogging your inbox? Learn how to isolate and destroy all social media notifications in one click.
The Safest Gmail Bulk Cleaner (No Chrome Extension Needed) — Protect your privacy. Learn why you should never use Chrome extensions to clean your email, and why server-side API cleaners are the safest choice.
How to Automatically Delete Emails by Size and Date in Gmail — Create a custom search to automatically find and delete emails larger than 5MB that are older than 6 months using Playbook automation.
How to Automatically Delete Unread Promotional Emails in Gmail — Set up a custom query to automatically delete promotional emails that have been sitting unread for more than 30 days.
How to Auto-Delete Emails by Subject Keywords (e.g. "Sale") — Learn how to build custom queries that hunt down and automatically delete emails containing specific keywords like "unsubscribe" or "flash sale".
How to Automatically Delete All Emails From a Specific Domain — Build a custom query to automatically identify and delete all incoming or historical emails from a specific company or domain.
How to Delete Social Notifications Only If They Have Attachments — Learn how to combine category filters with attachment logic to delete heavy social media notifications while keeping text-only alerts.
How to Delete Unread Emails from a Specific Sender Older Than 6 Months — Learn how to automate the deletion of unread emails from a specific sender that are older than 6 months using advanced custom queries.
How to Delete Emails with Specific Keywords and Large Attachments — Target storage-hogging emails by combining specific subject keywords with large attachment filters in a single automated Gmail Playbook.
How to Delete Read Promotional Emails from a Specific Sender — Create a custom search to automatically trash promotional emails from a specific brand, but only after you have already read them.
How to Delete Old Emails with Specific Keywords from One Domain — Combine domain filters, date parameters, and subject keywords to create the ultimate highly-specific Gmail deletion automation.
Delete Emails from Specific Sender with No Attachments Older Than 30 Days — Preserve files while deleting text. Learn how to delete old text-only emails from a specific person while keeping emails that contain attachments.
How to Delete Read Archived Emails with Specific Keywords — Clean out your hidden archive. Learn how to automate the deletion of read emails that contain specific keywords and are no longer in your Primary inbox.
Delete Promotional Emails with Specific Keywords Older Than 6 Months — Combine Category, Keyword, and Date filters to create the ultimate automated purge for old marketing campaigns.
Delete Unread Emails Larger Than 10MB from a Specific Sender — Target unread, massive files from specific senders. A complex 3-parameter custom query to instantly recover gigabytes of storage.
1 Million Ways to Clean Your Inbox: The Ultimate Power of Custom Queries — Discover how Smart Mailbox Cleaner allows you to combine 9 different parameters to create over a million highly specific, automated email deletion possibilities.
Understanding Your Dashboard: Storage Gauge and Cleanup Metrics — Learn how to read your Smart Mailbox Cleaner dashboard metrics, track recovered storage, and understand your Gmail quota.
Safe to Delete vs. Review: The 3-Level Safety Score System — Discover how our proprietary 3-level safety algorithm categorizes your emails to ensure you never accidentally delete an important document.
Deep-Dive Verification: How to View Specific Emails Before Mass Deleting — Learn how to inspect the exact emails within a Category Card or Custom Query to verify your selection before executing a bulk deletion.
Surgical Selection: How to Exclude Specific Emails from a Bulk Delete — Learn how to manually select or deselect specific emails from a bulk batch before sending the rest to the trash.
The "Move to Trash" Action Explained: What Actually Happens to Your Data — Understand the exact mechanics behind the "Clean" button. How Smart Mailbox Cleaner utilizes the Gmail Trash folder to protect your data.
Top Domains Analytics: Identify Who Spams You The Most — Learn how to use the Top Domains dashboard widget to identify the specific companies and senders consuming the most space in your Gmail.
Domain Deep-Dive: Viewing All Emails from a Single Company — Discover how to click a Top Domain to instantly filter, view, and bulk delete every email originating from a specific company.
Download Before Delete: The Ultimate Gmail Backup Safety Net — Nervous about mass deletion? Learn how to request a downloadable ZIP backup of your emails right from your dashboard before purging them.
Managing Temporary Storage: Wiping Your ZIP Backup Instantly — Learn how our privacy-first architecture temporarily stores your email backups, and how you can manually wipe them from our servers.
How to View Downloaded Emails (.eml Format) — You downloaded your email backup. Now what? Learn how to open, read, and search through standard .eml files on Windows and Mac.
The Newsletter Manager: Bulk Unsubscribe & Delete in One Click — Learn how the Newsletter Manager dashboard identifies all your subscriptions and allows you to simultaneously unsubscribe and delete historical emails.
Playbooks Dashboard: Managing Your Automated Email Routines — A complete guide to the Playbooks Panel. Learn how to view, edit, pause, and review the history of your automated Gmail cleanup routines.
Guardian Auto-Clean: Setting Up Your 95% Storage Emergency Threshold — Never bounce an email again. Learn how to configure the Guardian feature to automatically execute an emergency playbook when your storage hits 95%.
Multi-Mailbox Power Feature: Switch Between Accounts Seamlessly — Stop logging in and out. Learn how Power users can connect and manage up to 5 different Google accounts from a single unified dashboard.
The Signup Process: Understanding Google OAuth and Your Privacy — A transparent breakdown of our secure signup process. Learn why we use Google OAuth and exactly what permissions we request to clean your inbox.
The 30-Day Undo Log: How to Reverse a Deleted Batch — Learn how to use the Cleanup History dashboard to audit your past actions and use the 1-click Undo button to instantly restore deleted emails.
Domain Admin Dashboard: Enterprise Control for Google Workspace — A guide for IT Administrators. Learn how to use the Domain Admin dashboard to centrally manage billing, allocate cleanup credits, and deploy SSO.
Why Is My Gmail Storage Full When I Have No Emails? (And How to Fix It) — Stop scratching your head. Discover how Google shares your 15GB quota across Drive, Photos, and Gmail, and learn how to fix a full inbox fast.
The Ultimate Guide to Finding & Deleting Large Attachments in Gmail — Master Gmail search operators like size:10m, and learn how to automate the deletion of massive files to keep your inbox lean and fast.
Smart Mailbox Cleaner vs. Clean Email: Which is Safer? — A deep-dive technical comparison between Smart Mailbox Cleaner and Clean Email, focusing on OAuth scopes, data privacy, and reversal safety.
Getting Started with Smart Mailbox Cleaner: A Complete Walkthrough — Everything you need to know to set up Smart Mailbox Cleaner, connect your Gmail account, and run your first scan in under 2 minutes.
Smart Scan: How the 7-Category Email Scanner Works — Learn how Smart Mailbox Cleaner scans your inbox using Gmail metadata to automatically categorize emails into 7 smart cleanup buckets.
Custom Scan Builder: Create Your Own Gmail Cleanup Queries — Master the visual query builder to target exactly the emails you want to delete. Combine filters for sender, subject, size, date, labels, and more.
Safety Scores & Confidence Tiers: How We Keep Your Important Emails Safe — Understand how Smart Mailbox Cleaner scores every email for safe deletion using metadata signals — and how starred, important, and recent emails are protected.
One-Click Cleanup: How to Safely Delete Thousands of Emails — A step-by-step guide to using Smart Mailbox Cleaner's one-click cleanup — including category selection, email deselection, credit costs, and the confirmation process.
30-Day Undo: How to Restore Deleted Emails to Their Original Folders — Made a mistake? Learn how Smart Mailbox Cleaner's 30-day undo window works, including label snapshot restoration and cleanup history.
Storage Gauge & Growth Rate: Monitor Your Gmail Space in Real-Time — Track your Gmail storage usage, see daily growth trends, and understand your shared Google quota across Gmail, Drive, and Photos.
Inbox Tools: Bulk Unsubscribe & Block Senders — Take control of your inbox with bulk unsubscribe from newsletters and permanent sender blocking with auto-delete, archive, or spam rules.
Email Archive & Download: Export Your Emails as .ZIP Before Deleting — Learn how to download a backup of your emails as a .ZIP archive before cleaning up — including .eml format, secure storage, and auto-expiry.
Email Import: Upload EML, MBOX & PST Files to Gmail — Import emails from external sources into your Gmail account. Supports drag-and-drop upload, chunked transfer for large files, deduplication, and resume.
Automation Playbooks: Schedule Automatic Email Cleanup — Create automated cleanup rules that run on a schedule. Set filters, safety thresholds, and let Smart Mailbox Cleaner keep your inbox clean automatically.
Multi-Mailbox: Connect & Manage Multiple Gmail Accounts — Connect up to 5 Gmail accounts to a single Smart Mailbox Cleaner dashboard. Switch between mailboxes, run separate scans, and manage storage across accounts.
Plans, Pricing & Credits: Everything You Need to Know — Understand Smart Mailbox Cleaner's credit system, plan tiers, regional pricing, top-up packs, and how credits are consumed during cleanup.
Privacy & Security: How We Protect Your Gmail Data — A deep dive into Smart Mailbox Cleaner's privacy architecture — metadata-only access, AES-256 encryption, PKCE OAuth, zero email body reading, and GDPR compliance.
Domain Admin: Managing Google Workspace Teams with Smart Mailbox Cleaner — A guide for Google Workspace admins — manage team access, distribute licenses, handle domain billing, and monitor storage across your organization.