> For the complete documentation index, see [llms.txt](https://i-o-digital-foundation.gitbook.io/ioc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://i-o-digital-foundation.gitbook.io/ioc/send-encrypted-messages.md).
# Send Encrypted Messages
With the I/O Coin wallet you can chat with other people with AES-256 encryption and fully decentralized. Also, chatting happens directly on the I/O Coin blockchain without the use of unsecure smart contracts.
## So how does it work?
First, you and the person you want to chat with will need a public alias. You can read more about how to register an alias and how to decrypt it [here](/ioc/register-an-alias-dions.md). Now you will need to send an invitation to start chatting. To do that, go to **My RSA Keys** and find the DION you want to use to chat and click the green **Invite** button.
Type in the DION of the other party and press **Enter**. After a few seconds the other person will receive the invitation under their **Invites** tab. After they click **Accept** an encrypted tunnel between both parties has been created and you can start chatting.
Simply start chatting by going to your **Address Book**, click on the right contact and then click **Chat**.
Your friend will receive your message with the next block which is usually well within 60 seconds.
## Video Tutorial
Below video also shows how to use encrypted chat on the I/O Coin blockchain using the HTML5 wallet.
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