Beta — already in testers' hands

A Gmail follow-up reminder you never have to set yourself.

Gmail's Nudge and extensions like Boomerang work off reminders you create. FilsOnly watches your Gmail threads on its own and tells you when one's gone quiet — no snooze button required.

Free during beta · Gmail & Outlook · Bring your own AI key
FilsOnly nudge
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Gmail + FilsOnly

Gmail already nudges you. It just doesn't remember much.

Gmail's built-in "Nudge" resurfaces a message that's sat unanswered for a couple of days, and Gmail Gemini can summarize or draft a reply once you open it. Browser extensions like Boomerang let you snooze a message or set a manual reminder on it. Both are useful — and both put the remembering back on you.

Gmail NudgeBoomerang-style extensionsFilsOnly
Requires you to set a reminder yourselfNo, but only resurfaces in-inboxYes — manual, per emailNo — detects automatically
Understands the thread went unresolved, not just unopenedLimitedLimitedYes
Drafts the reply for youOnly inside GeminiNoYes
Your inbox data leaves Google's ecosystemNoOften, to the extension's serversNo — device to Gmail, direct
Private by design
Email stays between your device and Gmail/Outlook
No FilsOnly backend server holds your inbox
Bring your own AI key — no markup, billed at cost
Free during beta
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