Show email summary in the thread list

[ChristophWurst]

Is your feature request related to a problem? Please describe.

As a Nextcloud user I want to get a quick overview of my inbox emails without having to open them. There is a text preview, but it's use is limited. Most emails show Hi Christoph … and similar.

Describe the solution you'd like

Process the email and give a concise summary instead of the literal text preview. Moreover, make the text two-lined, so I can get a bit more information out of the entry.

Show an icon in front of the generated text to make it clear that it's generated and not content of the sender.

Work packages

• Make the preview text two-lined. This can also be done without Create a short summary of every email #10388.
• Show the generated summary instead of the preview text, if available.

Additional context

• Requires Create a short summary of every email #10388