Time Zone Email Router

Paste a scheduling email and an AI model in your browser lists proposed times, time zones and people, ready to convert.

Free, private, no signup.

Last updatedHow we build & check our tools

Interactive Tool

This tool runs in your browser and is loading now.

Enter your values once it appears to see your results.

How Time Zone Email Router works

Press Load model once: your browser downloads Gemma 4 E2B instruction-tuned (web build) (2.0 GB) from this site and keeps it in its cache. Then add your text and press Classify locally. The model runs on this device using your graphics card, so nothing you enter is sent to a server. Until the model is loaded, or if your device cannot run it, the tool falls back to a simple keyword check and labels the result as the fallback.

Gemma 4 E2B instruction-tuned (web build) is a small open language model from Google. The tool sends it the instruction below plus your text, asks for a JSON answer with fixed fields, and shows each field as a card. It runs at temperature 0, so the same input gives the same answer on the same device, though different graphics cards can word it slightly differently.

Inputs longer than 6,000 characters are cut to that length before they reach the model, and the result says so. The model only sees what you paste: it does not look anything up.

The instruction the model gets

You read a scheduling email that involves people in different places. Extract the proposed times, the time zones or cities attached to them, and who is where, all exactly as written. Do not convert any time to another zone and do not work out dates; another tool does the conversion.

What it returns

  • Proposed times: Each proposed meeting time with its zone or city exactly as written, e.g. '4pm London time, next Monday'.
  • People and locations: Each person or party and the place or zone the email puts them in, written as 'Name: place'.
  • Zones to check: Every distinct time zone or city in the email, once each, so you can convert the proposed time for each.
  • Unclear details: Times without a zone, ambiguous abbreviations such as 'EST in summer', or relative dates like 'next Monday'.

Worked example

The model's output for the built-in sample, recorded on a desktop browser. Your run may word things slightly differently.

Email: Can we meet at 4pm London time next Monday? I am in Berlin that week, Ana is in New York, and the customer is in Singapore.
Proposed times
4pm London time next Monday
People and locations
I: Berlin Ana: New York customer: Singapore
Zones to check
London time Berlin New York Singapore
Unclear details
next Monday

The model

The files are served from this site, versioned so a cached copy is never stale. Nothing is fetched from a third party while you use the tool.

ModelDownloadRuns onLicence
Gemma 4 E2B instruction-tuned (web build)2.0 GBGraphics card (WebGPU)Apache-2.0

Limitations

  • Small language models make mistakes: they can miss an item, merge two, or state something more confidently than the text supports. Check the result against your input before you rely on it.
  • It needs WebGPU and about 8 GB of memory, so it is offered on desktops and laptops, not on phones and tablets. Devices that cannot run it get the keyword fallback, clearly labelled.
  • Results describe the input you gave, not the real-world situation behind it. Review them yourself before acting.

Good uses

  • Triage calendar and scheduling notes before deeper review
  • Prepare consistent labels for repeat workflows
  • Reduce manual sorting on small batches
  • Keep sensitive drafts in the browser preview

Frequently Asked Questions

Common questions about the Time Zone Email Router

No. The model files download from this site once, and then everything runs in your browser tab. The text you enter is never sent to a server, and closing the tab discards it.