DateDrop
"Let's say Tuesday the… hang on." DateDrop inserts dates, deadlines and timezone-safe meeting times into your email at the cursor — no calendar squinting, no timezone math in your head.
€19 one-time · free tier, free forever · 30-day money-back
Every date in an email is a small math problem
What's the date next Friday? What's ten business days from now? And the classic: you write "15:00" to a colleague in New York and someone shows up an hour late because daylight saving switched on one side of the ocean and not the other.
DateDrop does the calendar work and drops the answer at your cursor. Today, tomorrow, next Tuesday, in N business days — in the format you prefer. Pro writes timezone-safe meeting lines like "Tue 14 Jul, 15:00 CEST / 09:00 EDT", computed locally with the same timezone rules your computer uses. No external services, ever.
Free vs Pro
Free handles dates and deadlines. Pro handles the planet — multi-zone meeting lines and saved presets.
| Feature | Free | Pro €19 |
|---|---|---|
| Insert today / tomorrow / next weekday in your format | ✓ | ✓ |
| Mini calendar picker | ✓ | ✓ |
| "In N business days" computer | ✓ | ✓ |
| Timezone-safe meeting lines (e.g. 15:00 CEST / 09:00 EDT) | — | ✓ |
| Saved formats | — | ✓ |
| Multiple-zone presets | — | ✓ |
| Deadline phrases ("EOD Friday, 18:00 CET") | — | ✓ |
How it works
Install the free add-in
Two minutes, no account, no card. Add it via Outlook's Get add-ins dialog — see the install guide.
Drop dates while you write
Composing an email, open DateDrop, click the date or rule you need — it lands at your cursor. Free forever — not a trial.
Unlock Pro when you need it
Buy once on Gumroad, paste your license key into the pane. Timezone lines and presets unlock instantly.
Installing DateDrop
In Outlook: Get add-ins › My add-ins › Add a custom add-in, then add the DateDrop manifest from URL or file. A DateDrop button appears when you're composing a message.
Coming to AppSource: DateDrop is being submitted to Microsoft's add-in marketplace, after which it installs in one click from inside Outlook. Sideloading works today.
FAQ
How does it know the timezone rules?
It uses the timezone database already built into your browser and Outlook (the Intl API) — the same rules your clock follows, including daylight saving switches. No external service is called, so it works offline and nothing about your email leaves Outlook.
Which date formats can it write?
Your pick: 14 July 2026, 14-07-2026, 2026-07-14, Jul 14 — and Pro lets you save the formats you use so they're one click away.
Does "business days" know my holidays?
It skips weekends, which covers the everyday "10 business days" case. Public holidays vary by country and company, so DateDrop is honest about not guessing them — you stay in control of the final date.
Refunds?
30-day money-back guarantee, no questions asked — reply to your Gumroad receipt or email [email protected].