Email

Whilst most readers and writers are file-based, it is also possible to retrieve and send emails using the following:

• get-email - retrieve emails from an IMAP folder, FROM and SUBJECT can be stored in variables
• send-email - send emails via SMTP, the from/to/subject/body options automatically expand variables

The connection parameters are obtained through environment variables that are stored in .env files.

The following pipeline uses the get-email reader to poll the audio folder for new messages with WAV attachments every 5 seconds. These audio files get downloaded and then forwarded to the send-email writer that attaches the audio files and then sends an email to the specified email address:

adc-convert -l INFO \
  get-email \
    -l INFO \
    -f audio \
    -o {TMP} \
    -r ".*\.(wav|WAV)" \
    -w 5 \
    --only_unseen \
    --mark_as_read \
    --from_variable FROM \
    --subject_variable SUBJECT \
  send-email \
    -l INFO \
    -f from@example.com \
    -t someone@anotherexample.com \
    -s {SUBJECT} \
    -b "Message from: {FROM}"