u/max1302

I built a Gmail filter app because Gmail’s built-in filters kept falling short of the rules I actually wanted.

It runs on Google Apps Script and gives you a simple UI for creating custom Gmail filtering rules.

You can match against:

• From
• To
• Subject
• Body

And you can combine multiple conditions with AND/OR, using either exact matching or regular expressions.

Supported actions:

• Archive
• Move to trash
• Permanently delete
• Add label
• Label + archive
• Label + trash
• Star
• Mark as read

I also added Test and Debug modes so people wouldn’t blindly enable destructive rules and hope for the best. You can inspect why a message matched before taking aggressive action.

Useful for:

• Filtering noisy transactional emails
• Catching repeat outreach/spam patterns
• Auto-labeling specific senders or subject formats
• Doing more flexible body/content matching than Gmail usually allows

It’s not a SaaS. It’s just a self-hosted Apps Script project connected to your own Google account.

Repo: https://github.com/maks1302/gmail-filtering-app

If people find it useful, I’ll keep improving it.