Hi !

New 1.5 version :


- UI + CSS improvement
- Delete button is back
- markasjunk plugin support

New compose page :




Enjoy !

Rounducbe is a IMAP client just like what ever you are using on macOS, iOS, & iPadOS. It has no more control over the folders you see then any other client.

hello. i'm just a user via my web host (SiteGround).

i know in their RoundCube webmail implementation, it uses the "Junk" mailbox behavior for spam. but there's also a persistent mailbox called "spam". yes, i can go into the webmail settings & "hide" that spam mailbox for webmail use, but i rarely use the webmail version. instead i use the IMAP option & connect my accounts to Apple Mail (macOS, iOS, & iPadOS).

for some reason, there doesn't seem to be an option to hide the spam mailbox in IMAP. and i can't delete that spam mailbox. so it just sits there. at first, it was very confusing trying to figure out why there are 2 mailboxes for the same thing, but now it's also confusing other people i help manage their web stuff with.

i cannot find anywhere, and SiteGround support doesn't know either, WHY there are the 2. but regardless of the 'why', can you PLEASE either add a way we can hide that folder for IMAP (like it can for webmail) OR allow us to delete it?

thank you :-)

I tested 1.6.11 using the past format of TinyMCE, as well as the original editable Emoticons plugin.  That makes the HTML editor not show.  Any way for me to tweak that?  😎

regarding the disappearing email: Roundcube does not do that out of the box. May be you are running a plugin but more likely its one of your other clients or its a server setting. If you have checked the settings in your other clients then you should contact your email provider.

Missing sent items: This is probably about the settings in your mobile client, check where it is configured to save sent messages.

hey all

my old emails keep disappearing from inbox after 24 hours and i am unable to find them. also i have configured outlook on laptop and also on my mobile.. they doesnt seem to sync.. i cant see emails which i sent from mobile on laptop and vice versa..it seems like a sync issue..

what seems to be the problem.. i have delated and reinstall my account on mobile already but doesnt seem to work

Thanks so much for the guide!
Based on it, I managed to get the docker deployment of roundcubemail working with those plugins.

For anyone looking to do this, I created a gist here: GitHub Gist

IMAP login log from Stalwart
2025-07-24T19:04:45Z INFO Authentication successful (auth.success) listenerId = "imap", localPort = 143, remoteIp = 185.229.156.90, remotePort = 51308, accountName = "xurxomf", accountId = 97

SMT login log from Stalwart
2025-07-24T19:05:55Z INFO SMTP EHLO command (smtp.ehlo) listenerId = "submission", localPort = 587, remoteIp = 185.229.156.90, remotePort = 55410, domain = "webmail.xurxomf.xyz"

And that's all, error 500...



EDIT: Solved. After 3 weeks of trying when I had free time.
1. Stalwart only allowed PLAIN and LOGIN using TLS on 465. For some reason, 465 and 993 are not working on Roundcube so when using 587, Stalwart was not letting me use PLAIN and LOGIN.... Aded those on Stalwart and problem solved
2. Roundcube was using @mail.xurxomf.xyz instead of @xurxomf.xyz because my username is xurxomf only and it was autocompleting.

I've Stalwart Mail Server installed and configured.

I'm using my mails with Thunderbird, Blue Mail... and they work fine on port 465.

If I try to use 465 on Roundcube it does nothing when sending a mail. it loads for a while and then fails with no errors, just Could not authenticate.

If I try to use 587 I get the 500 error like in the title.

If I try to use PLAIN or LOGIN(supported and enabled on Stalwart) it fails with Code: 554.

I don't know what to try. I've trued with SMTP username and paswrod %u and %p, 465 and 587, PLAIN and LOGIN...

If someone know what to do, please let me know.

IMAP works fine. I can read mails and everything. The error is when sending a mail only.

There are no error logs on Stalwart, just connection recived from X with user X on port 587/465...

Fixed it- I needed to change ownership of the whole install, not just under the public_html directory.