Frequently Asked Questions

General

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?

Groups

How can I create a group?

Who can add members to a group?

I have deleted myself by accident.

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

Encryption

Does Delta Chat have an 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.

OpenPGP. Key transport is done via Autocrypt. -

Can I re-use by 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 have to do nothing.

Multi-client

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

Miscellaneous

Delta Chat on Linux Desktop

Login Issues

I have a problem with …

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