Brian Casel
@briancasel.com
Gmail filters are frustratingly limited. They can't apply more than one label. You can't even remove labels.
Filter Hawk gives you all the filters and actions you'd expect. You can stack them, group them, and manage your inbox like a pro.
Filter Hawk gives you all the filters and actions you'd expect. You can stack them, group them, and manage your inbox like a pro.
November 19, 2025 at 2:46 PM
Gmail filters are frustratingly limited. They can't apply more than one label. You can't even remove labels.
Filter Hawk gives you all the filters and actions you'd expect. You can stack them, group them, and manage your inbox like a pro.
Filter Hawk gives you all the filters and actions you'd expect. You can stack them, group them, and manage your inbox like a pro.
Ever wanna screen in or block first-time senders in Gmail? You can't do it with Gmail filters.
But you can with FilterHawk. Filter based on sender history, manage your block list, and quiet down the cold emailers.
But you can with FilterHawk. Filter based on sender history, manage your block list, and quiet down the cold emailers.
November 19, 2025 at 2:46 PM
Ever wanna screen in or block first-time senders in Gmail? You can't do it with Gmail filters.
But you can with FilterHawk. Filter based on sender history, manage your block list, and quiet down the cold emailers.
But you can with FilterHawk. Filter based on sender history, manage your block list, and quiet down the cold emailers.
Did one Gmail filter undo the work of another? Which Gmail ran first? Total mystery.
FilterHawk follows your priority order, always. Drag-and-drop to reorder so that it's perfectly predictable.
FilterHawk follows your priority order, always. Drag-and-drop to reorder so that it's perfectly predictable.
November 19, 2025 at 2:46 PM
Did one Gmail filter undo the work of another? Which Gmail ran first? Total mystery.
FilterHawk follows your priority order, always. Drag-and-drop to reorder so that it's perfectly predictable.
FilterHawk follows your priority order, always. Drag-and-drop to reorder so that it's perfectly predictable.
Gmail's filters silently fail all the time—and you don't know why!
FilterHawk shows you an audit trail for every email. See which filters passed, failed, and which actions were taken. Use those insights to dial in your filters perfectly.
FilterHawk shows you an audit trail for every email. See which filters passed, failed, and which actions were taken. Use those insights to dial in your filters perfectly.
November 19, 2025 at 2:46 PM
Gmail's filters silently fail all the time—and you don't know why!
FilterHawk shows you an audit trail for every email. See which filters passed, failed, and which actions were taken. Use those insights to dial in your filters perfectly.
FilterHawk shows you an audit trail for every email. See which filters passed, failed, and which actions were taken. Use those insights to dial in your filters perfectly.
Gmail's filters make you write cryptic search queries and hassle with a UI that hasn't seen love in years.
FilterHawk gives you an intuitive logic builder. Build sophisticated filters without code or guesswork.
FilterHawk gives you an intuitive logic builder. Build sophisticated filters without code or guesswork.
November 19, 2025 at 2:46 PM
Gmail's filters make you write cryptic search queries and hassle with a UI that hasn't seen love in years.
FilterHawk gives you an intuitive logic builder. Build sophisticated filters without code or guesswork.
FilterHawk gives you an intuitive logic builder. Build sophisticated filters without code or guesswork.
interesting timing for customer experience outreach
November 18, 2025 at 7:17 PM
interesting timing for customer experience outreach
The early creative process when planning a new youtube video.
October 23, 2025 at 9:54 PM
The early creative process when planning a new youtube video.
Scenes from Agent OS 2.0 in multi-agent mode.
October 10, 2025 at 12:32 AM
Scenes from Agent OS 2.0 in multi-agent mode.
I'm a big fan of putting these small tooltips next to most settings.
These help people use the app more confidently without needing to navigate and hunt for documentation or contact support.
These help people use the app more confidently without needing to navigate and hunt for documentation or contact support.
October 1, 2025 at 1:30 PM
I'm a big fan of putting these small tooltips next to most settings.
These help people use the app more confidently without needing to navigate and hunt for documentation or contact support.
These help people use the app more confidently without needing to navigate and hunt for documentation or contact support.
Getting closer to release of Agent OS 2.0...
Docs are being drafted in the codebase so that Claude can analyze our latest product flows and ensure our docs cover them accurately and completely.
Multiple passes to make it simpler, more user friendly for newcomers.
Docs are being drafted in the codebase so that Claude can analyze our latest product flows and ensure our docs cover them accurately and completely.
Multiple passes to make it simpler, more user friendly for newcomers.
September 22, 2025 at 6:21 PM
Getting closer to release of Agent OS 2.0...
Docs are being drafted in the codebase so that Claude can analyze our latest product flows and ensure our docs cover them accurately and completely.
Multiple passes to make it simpler, more user friendly for newcomers.
Docs are being drafted in the codebase so that Claude can analyze our latest product flows and ensure our docs cover them accurately and completely.
Multiple passes to make it simpler, more user friendly for newcomers.
Interesting take on that: spyglass.org/cynical-read...
September 15, 2025 at 5:20 PM
Interesting take on that: spyglass.org/cynical-read...
Orchestrating subagents for every phase of development using Agent OS 2.0.
Sharing more details on this in tomorrow's workshop.
Sharing more details on this in tomorrow's workshop.
September 15, 2025 at 3:52 PM
Orchestrating subagents for every phase of development using Agent OS 2.0.
Sharing more details on this in tomorrow's workshop.
Sharing more details on this in tomorrow's workshop.
Perfect day for a stroll around the city.
September 14, 2025 at 6:38 PM
Perfect day for a stroll around the city.
I'm writing today's newsletter about this.
Interesting angle on it (work in progress).
Interesting angle on it (work in progress).
September 12, 2025 at 1:30 PM
I'm writing today's newsletter about this.
Interesting angle on it (work in progress).
Interesting angle on it (work in progress).
Today's project:
Using Shortwave's AI assistant to analyze all my survey responses and collect questions for the Builder Methods workshop on Tuesday.
Using Shortwave's AI assistant to analyze all my survey responses and collect questions for the Builder Methods workshop on Tuesday.
September 12, 2025 at 12:28 PM
Today's project:
Using Shortwave's AI assistant to analyze all my survey responses and collect questions for the Builder Methods workshop on Tuesday.
Using Shortwave's AI assistant to analyze all my survey responses and collect questions for the Builder Methods workshop on Tuesday.
Yep - I need to be using this more.
September 11, 2025 at 2:58 PM
Yep - I need to be using this more.
"Who it's for"
This is who my workshop is for next week. And who I'm building Builder Methods for.
Just getting started.
This is who my workshop is for next week. And who I'm building Builder Methods for.
Just getting started.
September 9, 2025 at 2:51 PM
"Who it's for"
This is who my workshop is for next week. And who I'm building Builder Methods for.
Just getting started.
This is who my workshop is for next week. And who I'm building Builder Methods for.
Just getting started.
Agent OS 2.0 coming along...
This version *compiles* your commands and agents into your project. This injects your coding standards, workflows, patterns, so that your agent is all trained up and ready to rock.
It works in "Claude Code mode" (uses subagents) or "Any CLI mode" (no subagents).
This version *compiles* your commands and agents into your project. This injects your coding standards, workflows, patterns, so that your agent is all trained up and ready to rock.
It works in "Claude Code mode" (uses subagents) or "Any CLI mode" (no subagents).
September 8, 2025 at 10:39 PM
Agent OS 2.0 coming along...
This version *compiles* your commands and agents into your project. This injects your coding standards, workflows, patterns, so that your agent is all trained up and ready to rock.
It works in "Claude Code mode" (uses subagents) or "Any CLI mode" (no subagents).
This version *compiles* your commands and agents into your project. This injects your coding standards, workflows, patterns, so that your agent is all trained up and ready to rock.
It works in "Claude Code mode" (uses subagents) or "Any CLI mode" (no subagents).
Here's what writing looks like for me now.
September 5, 2025 at 1:01 PM
Here's what writing looks like for me now.
The days of rigid role separation—"designer", "frontend dev", "backend dev"—are over. Today's reality is fluid: designers code, developers need UX context, and features get built across all layers simultaneously.
How Agent OS 2.0 will solve this... 🧵
How Agent OS 2.0 will solve this... 🧵
September 3, 2025 at 4:14 PM
The days of rigid role separation—"designer", "frontend dev", "backend dev"—are over. Today's reality is fluid: designers code, developers need UX context, and features get built across all layers simultaneously.
How Agent OS 2.0 will solve this... 🧵
How Agent OS 2.0 will solve this... 🧵
Sneak peek at creating a spec using Agent OS 2.0.
Planning, researching, writing, verifying accuracy.
Designed to setup Claude Code for successful implementation.
Planning, researching, writing, verifying accuracy.
Designed to setup Claude Code for successful implementation.
August 29, 2025 at 2:30 PM
Sneak peek at creating a spec using Agent OS 2.0.
Planning, researching, writing, verifying accuracy.
Designed to setup Claude Code for successful implementation.
Planning, researching, writing, verifying accuracy.
Designed to setup Claude Code for successful implementation.
Agent OS 2.0 will include (customizeable) workflows for feature development, with status reports.
August 27, 2025 at 3:44 PM
Agent OS 2.0 will include (customizeable) workflows for feature development, with status reports.