Dear all,

I am experiencing a severe performance issue with Roundcube webmail v1.6.16 on a specific cPanel account. When users log in, the inbox folder (and occasionally other folders) takes anywhere from 2 to 4 minutes to load.

The cPanel account has plenty of room to breathe, so I don't believe it's a standard resource starvation issue. Here are the CloudLinux LVE limits and current usage details for this account:

• CPU: 2 Cores
• RAM: 4 GB
• Entry Processes (EP): 70
• Number of Processes (NPROC): 200
• I/O Usage: 20 Mb/s
• IOPS: 2024
• Disk Space: 150 GB allocated (currently at ~50% usage)

Email Account Limits: All accounts are set to Unlimited storage.

Any help or direction on which logs to tail would be greatly appreciated!

Best regards

Anything else to change?

If you are are an end user then please contact your email provider for support.

The answer will depend on which plugin you are using. Lets say you are using the Archive plugin that ships with Roundcube. If you go to your settings > preferences > special folders, there you should see which folder is defined as your Archive folder.

To download an entire folder you need to have enabled something like the Zipdownload plugin.

Hello!
If I choose Archive in Roundcube where do the emails end up?
How do I put the emails back?
Can I export the emails to a local hard drive?
Thank you if anyone would like to answer :-)

Quote from: alec on June 09, 2026, 07:20:28 AMThe icon looks out of place. How about putting it on the right (or left) of the Summary and Headers actions (in the same line). It could then have a "DKIM" label (in green).

Something like this?

This is where I got the idea for this plugin. A screenshot taken from iPadOS making a bold and completely untrue statement.


I claim, that sender can be verified. That's why it has digital signature in it.

Quote from: alec on June 09, 2026, 07:20:28 AMThe icon looks out of place. How about putting it on the right (or left) of the Summary and Headers actions (in the same line). It could then have a "DKIM" label (in green).

Thanks! That's a really good idea.

In my defense: I'm a nerd. I do software. I don't do graphic design! 

The icon looks out of place. How about putting it on the right (or left) of the Summary and Headers actions (in the same line). It could then have a "DKIM" label (in green).

Improved the plugin:

• Renamed into DKIM Info
• When DKIM validation is green, removed the bar and made only a small check-mark to not consume space. Information is visible as tooltip.
• Uncertain on validation failures are displayed as bar to bring attention to fact a possible forgery of sender information has been detected.

Any other suggestions?

It is a known fact, that all SMTP-traffic today must have valid digital signature in it. Most major email providers won't even process your mail without one and all of them will classify your precious as junk. So, must have DKIM.

Meanwhile I find it weird that mail client's don't display DKIM verification status as receiving SMTPd added to mail headers. Gmail kinda does, but you'll have to click to see the "original" mail. Outlook and such won't display any information. As a negative, iOS will display "sender verified" to an email having properly valid DMARC in it.

Complaining here about lack of features is an option. I chose the hard way: https://github.com/roundcube/roundcubemail/pull/10222

Now there is a DKIM validator plugin to parse mail headers and display the validation status against alleged sender domain.

Example:


Now it is pretty easy for end-user to determine if email sender is a forgery, valid or uncertain.

Any comments, feedback or improvement ideas are welcome.