How to send data resources

About

This howto shows you how to send an email with a data resource attached via the sendmail operation.

Steps

In the below pipeline, we use the following steps:

select to select data resources that will be send as attachement.
sendmail to send them

Start the howto smtp server

tabul service start smtp

1 service was started
Name   Type
----   ------
smtp   docker

Check that you can ping it

tabul connection ping smtp

The connection (smtp) has been pinged successfully

The pipeline

kind: pipeline
spec:
  steps:
    - name: "Select"
      comment: "This operation select the resources to send"
      operation: "select"
      args:
        data-selector: "email/*.csv@howto"
    - name: "Send"
      comment: "Send the selected resources as email attachment"
      operation: "sendmail"
      args:
        target-uri: "@smtp" # smtp is the default smtp connection and is therefore optional
        to: "[email protected]"
        subject: "Demo: How to send resources"
        txt: |
          Please, find attached the report data

The execution

You can execute this pipeline with the execute command

tabul flow execute pipeline/email_resources.yml@howto

Output:

Execution Metrics of the pipeline (email_resources)
metrics                  value
----------------------   ----------------------------------------------------------
pipeline-path            /opt/tabulify/resources/howto/pipeline/email_resources.yml
processing-type          batch
start-time               2025-11-10T20:01:57.699313769Z
end-time                 2025-11-10T20:01:57.821443266Z
total-elapsed-time       0.122s
execution-elapsed-time   0.122s



Step execution results for the pipeline (email_resources)
step_id   step_name   operation_name   operation_type   processing_type   input_counter   output_counter   execution_counter   error_counter   parking_counter
-------   ---------   --------------   --------------   ---------------   -------------   --------------   -----------------   -------------   ---------------
      1   Select      select           Supplier         batch                         0                1                   0               0                 0
      2   Send        sendmail         Map              stream                        1                1                   1               0                 0

Check the Inbox

In the mailpit inbox, you can then see the email with the attached csv.