Digital invitation for a 600-person congress: the price

Three weeks before the congress, the room moves. The plenary is now on level two, the keynote starts at 9:30, and 600 cards already sitting in envelopes say something else. Someone on the organising team opens a spreadsheet, then WhatsApp, and starts working through the list person by person. That week is where the budget goes at this scale, not into the design. So take the number first: what a digital invitation for a 600-attendee congress costs. You can build one from the catalogue and send it today.

A congress with 600 people does not need 600 invitations. It needs one link everyone can open, and one invitation that updates itself when the room or the time moves. Paid once, at €29.99, with no subscription sitting between this year's edition and the next one. That is the whole idea, and it is a web page, not a PDF.

From 500 attendees up, the money goes on changes, not on paper

Print 600 cards with the room, the time and the congress name on them, and you have committed to those three facts. Change the room three weeks out and the run is reprinted and paid for a second time. The envelope, the postage and the address list for 600 attending companies sit heavier on the invoice than the design does. And the chasing week — the phone calls, the messages, the spreadsheet — tends not to be in the budget at all.

• Count the reprint, not the print run: a room change three weeks out puts 600 cards in the bin.
• Add the envelopes, the postage and the work of building an address list for 600 attending companies.
• Add the hours spent chasing confirmations by phone and on WhatsApp in the week before the event.
• Set that total next to one link that 600 people open on their phone, and one QR on the screen in the plenary.

How much does a digital invitation for a congress cost? €29.99, once

You pay once per invitation. No monthly fee, no per-guest charge, nothing carried over between editions of an annual congress. You share it as a link, as a QR on the screen in the plenary, or in a message, and nobody on the organising team installs a thing. The attendee opens the link in the phone browser and confirms from there: no app, no account, no download.

The price is per invitation, not per guest, so digital invitations don't get more expensive as the guest list grows. What grows is the confirmations list, and it arrives inside the invitation itself, in order, instead of scattered across one inbox. You set the RSVP questions to whatever registration needs and change them when that changes. Move the venue or the time and you edit the invitation: the same link shows the new version and nobody resends anything.

One link, one price, and the room can still change three weeks out.

What it doesn't do, before you buy

It doesn't print or post anything, and it isn't an app or a ticket-scanning system. Guests need a phone, a tablet or a computer with a connection. If the committee or the speakers want something in hand, the sensible split is one link for everybody plus a few printed copies for the people who will keep them. Build the invitation from the catalogue, try the cover for free, and share one link with all 600 on the same day.