If it works normally over mobile data or another internet connection but fails only when connected to Wi-Fi, look at the router/network path before blaming Roundcube. Roundcube itself is just the webmail interface; the actual connection still depends on DNS, HTTPS and the mail server being reachable. First try opening the webmail from another device on the same Wi-Fi. If everyone has the same problem, check the router's DNS settings and try a different DNS server such as 1.1.1.1 or 8.8.8.8, you can visit the settings page by typing your ip address such as 192.l.168.8.1 or 192.168.2.1 into the address bar. Also check whether the router or ISP is filtering the webmail domain or blocking the required traffic. If the webmail page opens but you get an error after loagging in, the problem could be on the IMAP/SMTP side instead. Roundcube can show connection errors when the underlying mail services or authentication are unavailable. The most useful test would be to compare Wi-Fi with mobile data. If the same account works immediately over mobile data, that points much more towards the Wi-Fi/router/DNS path than Roundcube itself.

If you dontt have access to the mail server, the available notification options are probably limited to whatever the webmail filter interface exposes. If you can change the subject but the body always stays as "Notification of new message", that usually means the notification template is controlled server side and cant be changed from the filter itself. Attaching the original message is similar. Some webmail systems have an option such as forwarding or redirecting the message instead of sending a notification, which would preserve the original mail and attachments. If your filter only offers "send notification", you probably won't be able to add the original message or create a custom body without a server-side change. so check whether there is a separate "forward" action in the filter options. If there isnt, youll likely need the mail administrator to change the filter/template settings.

you need to contact your email provider. roundcube is opensource webmail software you provider is using, it is not a service.

please could you explain what approval list you are referring to exactly?

Roundcube allows entries in an approval list, the following example is provided:
from nick\@example\.com
There is written that Roundcube uses Perl Regex. Is the "@" really a special character in Perl Regex, is it necessary to escape it?

I tried to register with announce.lists.roundcube.net, but I never received a confirmation email. I added lists.roundcube.net to the whitelist on the mail server, but nothing has appeared in my log file.
I also checked for any firewall or Fail2Ban blocks, but found none.
Does anyone have any idea what the problem could be?

I got a steam account a few years ago and now steam banned me and requesting proof of ownership and the seller told me that the email I have is the original one for the account but don't see any mail at all on the mail and So I need help seeing if they is mail from steam or anything on the email

I was facing the same issue and just made an account to post the solution.

In my infinite genius I forgot to add the php opening and closing tags.

<?php
$config["key"] = "value";
?>

Even if you are no longer plagued by this, I hope to at least help out others who come across this looking for help.

Out of all of the thousands of Roundcube users, do any of you know how to change the default for all users TinyMCE compose color?  I tested adding (textarea) color css in (styles.min.css), and in other places.  I also added (style="color: #custom") on the (compose.html) file.  However, the compose text color remains (#000000).  Thanks for any info!  :--)

I still Don't appear to figure out that TinyMCE plugin.

Where can I edit the default textarea font color?  I tested editing various areas such as (styles.min.css) adding textarea { color: #CUSTUM }.  Thanks!  :--)