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CardShare.ai
vs Thankbox

Both let a group sign one card from a single link, with no account needed to sign. Thankbox charges per card and adds a gift collection. CardShare.ai is free to send, and its AI designs the cover and drafts the opening note

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CardShare.ai
A CardShare.ai birthday card cover

Free

AI-designed cover, opens like a card

Thankbox
The cover of a Thankbox sample birthday card

$5.99

per card, or £4.99 in the UK

Side by side

How they compare

CardShare.aiThankbox
Price
Price to send a cardCardShare.ai: Yes: FreeThankbox: Classic from $5.99 (£4.99) per card, Premium £8.99; team plans from £19/month billed annually
Design and writing
AI-designed cover imageCardShare.ai: Yes: Yes, from one sentence or your photoThankbox: Partly: AI remix of an existing design, on team plans
AI message helpCardShare.ai: Yes: Drafts the headline and opening noteThankbox: No or not listed: Not listed on their site
Signing
No account to signCardShare.ai: Yes: No account neededThankbox: Yes: No account needed
Signers per cardCardShare.ai: Yes: No limitThankbox: Yes: No limit
GIFs in messagesCardShare.ai: Yes: YesThankbox: Yes: Yes, plus photos and voice notes; video on Premium
Sending
SlackCardShare.ai: Yes: Slack app includedThankbox: Partly: Share the link in Slack or Microsoft Teams
Scheduled deliveryCardShare.ai: No or not listed: Send when you're readyThankbox: Yes: Yes, at a date and time you pick
Group giftCardShare.ai: No or not listed: Not offeredThankbox: Yes: Gift collection pot; contributors pay a small card fee
Card formatCardShare.ai: A 3D greeting card that opens in the browserThankbox: A digital card or message board, with a PDF copy on Premium

Thankbox details checked in October 2026 from Thankbox pricing, Thankbox how it works and Thankbox help on team plans. Prices and features change, so check their site for the latest. Thankbox is a trademark of its owner; CardShare.ai isn't affiliated with it.

Which to pick

The honest version

Both handle the basics well: one link, no account to sign and no limit on signers. CardShare.ai is free to send and designs a cover for each person, with a Slack app for teams. Thankbox is the better pick if you also want to collect money for a gift, schedule delivery, or have people record video and voice messages.

Choose

CardShare.ai if…

  • You want to send a group card without paying per card
  • You want a cover designed for this person and occasion
  • You want help writing the opening note
  • Your team lives in Slack and you'd like to start cards from there

Choose

Thankbox if…

  • You want to collect money for a gift alongside the card
  • You want the card delivered automatically at a set date and time
  • You want contributors to add video or voice notes

FAQs

CardShare.ai vs Thankbox

Is there a free alternative to Thankbox?

Yes. CardShare.ai lets you design a group card, collect signatures from one link, and send it for free. Signers don't need an account.

How much does Thankbox cost?

As of October 2026, a Classic Thankbox is $5.99 (£4.99 in the UK) and a Premium Thankbox is £8.99, with team plans from £19/month billed annually. Creating one is free; you pay when you send it. CardShare.ai is free to send.

What's the main difference between CardShare.ai and Thankbox?

Thankbox charges per card and includes a gift collection pot. CardShare.ai is free to send, and its AI designs a cover and drafts an opening note for the specific person and occasion.

Does CardShare.ai work in Slack?

Yes. The CardShare.ai Slack app lets you create a card with a slash command and share the signing link in any channel.

Can I collect money for a gift on CardShare.ai?

Not yet. CardShare.ai is just the card. If you want a gift collection in the same place, Thankbox offers one.

Try it on your next card

Describe who it's for, share one link, and let everyone sign. It's free to send

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