Frequently Asked Questions


To whom can I write?

What are the advantages of Delta Chat compared to other messengers?

What if the receiver does not use Delta Chat?

Which messages do appear in Delta Chat?

Delta Chat automatically shows …

Other messages do not appear automatically. You can see the other messages in the main menu at Contact requests and, if desired, start a chat from there.

What about Spam?

Does Delta Chat support images, videos and other attachments?

Does Delta Chat support HTML-emails?


How can I create a group?

How to add members to a group?

What is a verified group?

I have deleted myself by accident.

I do not want to receive the messages of a group any longer.


Does Delta Chat support end-to-end-encryption?

What do I have to do to activate the end-to-end-encryption?

If end-to-end-encryption is not available, is the connection not encrypted at all?

How can I check the encryption?

How can I verify the sender?

The user’s profile shows some additional information:

Which standards are used for end-to-end-encryption?

Can I re-use my existing private key?

If you don’t have a key or don’t even know you would need one - don’t worry: Delta Chat generates one as needed, you don’t have to hit a button for it.


Can I use Delta Chat on multiple devices the same time?

If you want to use the same account on different (Autocrypt capable) devices, you have to synchronize their encryption capabilities:


Does Delta Chat work with my e-mail-provider?

I’m interested in the technical details. Can you tell me more?