Grouping available update smtp notification to 1 single email per scan

[redstormsju]

Hello...

Could the smtp tigger allow for sending of 1 email with all available updates upon scan completion? IT would be a nice feature to alleviate the several emails received once a scan is complete.

Thank You!

[fmartinou]

Hi,

WUD_TRIGGER_{trigger_type}_{trigger_name}_MODE=batch should be what you need.

See

https://getwud.github.io/wud/#/configuration/triggers/

[redstormsju]

Thank you. I’ll try it.

…

On Tue, Nov 4, 2025 at 2:13 PM fmartinou ***@***.***> wrote: Hi, WUD_TRIGGER_{trigger_type}_{trigger_name}_MODE=batch should be what you need. See https://getwud.github.io/wud/#/configuration/triggers/ — Reply to this email directly, view it on GitHub <#802 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AYOO5PI2QRZUAR45N5ZEHI333D3ENAVCNFSM6AAAAACLEH6LYKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOBXGMZDANI> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[ghost]

I read this differently, I have WUD scanning 3 docker hosts which results in 3 emails twice a day. I'd like to have one email with the summary of all 3 hosts, or at least have a means to put the hostname in the subject.

        # Local watcher for HOST1
        - WUD_WATCHER_PENSIEVE_SOCKET=/var/run/docker.sock
        - WUD_WATCHER_PENSIEVE_WATCHBYDEFAULT=true
        - WUD_WATCHER_PENSIEVE_WATCHEVENTS=false
        - WUD_WATCHER_PENSIEVE_CRON=0 6,18 * * *
        
        # Remote watcher for HOST2
        - WUD_WATCHER_NIFFLER_HOST=host2.lan
        - WUD_WATCHER_NIFFLER_PORT=2375
        - WUD_WATCHER_NIFFLER_WATCHBYDEFAULT=true
        - WUD_WATCHER_NIFFLER_WATCHEVENTS=false
        - WUD_WATCHER_NIFFLER_CRON=0 6,18 * * *
        
        # Remote watcher for HOST3
        - WUD_WATCHER_FILCH_HOST=host3.lan
        - WUD_WATCHER_FILCH_PORT=2375
        - WUD_WATCHER_FILCH_WATCHBYDEFAULT=true
        - WUD_WATCHER_FILCH_WATCHEVENTS=false
        - WUD_WATCHER_FILCH_CRON=0 6,18 * * *

        # GMAIL SMTP Trigger
        - WUD_TRIGGER_SMTP_GMAIL_ONCE=false
        - WUD_TRIGGER_SMTP_GMAIL_MODE=batch
        - WUD_TRIGGER_SMTP_GMAIL_BATCHTITLE=[$$(watcher)] $${containers.length} container updates available.
        - WUD_TRIGGER_SMTP_GMAIL_HOST=smtp.gmail.com
        - WUD_TRIGGER_SMTP_GMAIL_PORT=465
        - WUD_TRIGGER_SMTP_GMAIL_USER=${WUD_TRIGGER_SMTP_GMAIL_USER}
        - WUD_TRIGGER_SMTP_GMAIL_PASS=${WUD_TRIGGER_SMTP_GMAIL_PASSWORD}
        - WUD_TRIGGER_SMTP_GMAIL_FROM=${WUD_TRIGGER_SMTP_GMAIL_FROM_USER}
        - WUD_TRIGGER_SMTP_GMAIL_TO=${WUD_TRIGGER_SMTP_GMAIL_TO_USER}
        - WUD_TRIGGER_SMTP_GMAIL_TLS_ENABLED=true 

I have $watcher in the WUD_TRIGGER_SMTP_GMAIL_BATCHTITLE setting above, but this results in a "watcher is undefined" error.

At the moment I receive emails like this:

Is there a solution already for this?