Stop Sending "Does Tuesday 2 PM Work?" — Multi-Slot Proposals Are Here
When2Overlap now lets you propose up to 3 meeting options in a single link. Recipients pick their preferred time from selectable cards — no more endless back-and-forth emails.
We've all been there. You find the perfect meeting time, fire off an email, and get back "Sorry, Tuesday doesn't work for me — how about Wednesday?" Then Wednesday doesn't work for someone else. Three days later, you're still negotiating.
The fix is simple: don't propose one time. Propose three and let people choose. That's exactly what Multi-Slot Proposals do in When2Overlap.
How It Works
The workflow takes about 30 seconds:
Pick your first time
Click a cell on the timeline to place the meeting, just like before. Then hit + Add option in the date navigation bar.
Clone or pick more
In the summary panel, click +1d or +2d to clone the same time to adjacent days. Or navigate to a different time and add it manually.
Share the link
Click Share — all 3 options are encoded in the URL. Copy/Email exports list every option with "Please reply with your preferred option."
Recipients choose
When someone opens your link, they see a banner with 3 option cards showing times converted to their timezone. One click to preview on the timeline.
The "+1 Day" Trick
In practice, most meeting proposals aren't "Tuesday 2 PM vs. Tuesday 4 PM." They're "same time, different day" — because the timezone overlap is the same, but calendar availability varies.
That's why every option in the summary panel has +1d and +2d buttons. Add your first option, then two clicks and you have "Tuesday, Wednesday, or Thursday at 2 PM" ready to go. The day clone uses calendar math (not a naive +24 hours) so it handles DST transitions correctly.
What Recipients See
Recipients don't need any account or app. They open the link and see:
- A banner with 3 option cards, each showing the meeting time converted to their local timezone
- A "Select" button on each card to preview that time on the full timeline
- A detailed city-by-city breakdown for the selected option
- Accept or Dismiss buttons to finalize
The proposer's timezone is the base, but every time is automatically converted so there's no mental math for anyone.
Export Behavior
Multi-slot proposals integrate seamlessly with existing export channels:
- Copy / Email — All options are listed with per-city times and a "Please reply with your preferred option" footer
- ICS / Google Calendar — Option 1 (Primary) is used for the calendar entry. This is intentional: calendar entries represent confirmed times, not polls
- Share Link — All options encoded in the URL via the
ssparameter
💡 Pro Tip
Combine Multi-Slot with AI Golden Window: let AI find the best slot, add it as Option 1, then +1d/+2d for the other days. You get AI-optimized times with schedule flexibility.
Backward Compatible
If you don't use Multi-Slot at all, nothing changes. Zero options means everything works exactly like the single-time mode you're used to. Old shared links without the ss parameter continue to work perfectly.
📄 Technical Reference
The AI algorithms behind When2Overlap — including Dynamic Comfort Curve, Weighted Multi-Timezone Scoring, and Fatigue Accumulation Model — are described in our published research paper:
Moon, J. (2026). Client-Side Heuristic Algorithms for Cross-Timezone Meeting Optimization: A Defensive Publication. Zenodo. https://doi.org/10.5281/zenodo.19258704
Try It Now
Multi-Slot Proposals are available today — no signup, no cost. Add your participants, pick your times, and share the link.
Open When2Overlap