No the software in this case is a classic forum software and stands alone.

I have summarized here what I have found out so far, but is currently only available in German https://handbuch.rollenspiel.monster/lemmy/communication/

I think my next one will be a https://frame.work There is also an overview of supported systems: https://frame.work/en/en/linux

I also like it very much.

Yes since the last update I can use it in FF. But you need Wayland

Hello

I am looking for a way to notify another mail address that a new mail has arrived, maybe even with the subject in the text.

Verry nice, Luke the idea

Dead believed live longer, or what was that? Good that it is finally over

None at all, I created a new profile and even disabled uBlock

Can I make any logs or anything that would help you?

Tested with an empty new profile: So when I go to the page I get the following message in the console:

Content Security Policy: Couldn’t process unknown directive ‘script-src-attr’

After about half a minute, the following message appears:

Working… logger.js:69:29
    error logger.js:69
    captureError error-utils.js:63
    logError base.js:786
    O base.js:80
    Underscore 2
        Qt
        r
    _workingTimeout notify_delayed_request.js:21
    i timer-mixin.js:29
    (Async: setTimeout handler)
    setTimeout timer-mixin.js:27
    default notify_delayed_request.js:19
    validateAndSubmit form.js:217
    (Async: promise callback)
    validateAndSubmit form.js:197
    invokeHandler base.js:1071
    default allow_only_one_submit.js:24
    (Async: promise callback)
    default allow_only_one_submit.js:24
    onFormSubmit form.js:152
    invokeHandler base.js:1071
    default prevent_default_then.js:19
    jQuery 2
        dispatch
        handle

And a minute later the following:

Response not received for: fxaccounts:can_link_account logger.js:72:35
    error logger.js:72
    timeout duplex.js:35
    add duplex.js:33
    request duplex.js:152
    request duplex.js:142
    request app.bundle.en_US.js:9
    (Async: promise callback)
    request app.bundle.en_US.js:9
    beforeSignIn state-machine.js:22
    invokeBrokerMethod base.js:1113
    value index.js:236
    value index.js:145
    _submitForm form.js:239
    (Async: promise callback)
    _submitForm form.js:236
    invokeHandler base.js:1071
    default progress_indicator.js:42
    (Async: promise callback)
    default progress_indicator.js:42
    invokeHandler base.js:1071
    default notify_delayed_request.js:25
    (Async: promise callback)
    default notify_delayed_request.js:25
    validateAndSubmit form.js:217
    (Async: promise callback)
    validateAndSubmit form.js:197
    invokeHandler base.js:1071
    default allow_only_one_submit.js:24
    (Async: promise callback)
    default allow_only_one_submit.js:24
    onFormSubmit form.js:152
    invokeHandler base.js:1071
    default prevent_default_then.js:19
    jQuery 2