Mails.yml

-
    # Send a mail
    # The swiftmailer lib will be used under the hood
    type: mail
    mode: send
    from: string # references will be resolved
    to: string/array # references will be resolved
    cc: string/array # references will be resolved
    bcc: string/array # references will be resolved
    subject: string # references will be resolved within the string, as happens for rich text fields: use the following
                    # syntax: "this is an email subject about [reference:my_ref] etc..."
    body: string # references will be resolved within the string, as happens for rich text fields: use the following
                 # syntax: "this is an email body about [reference:my_ref] etc..."
    attach: string|string[] # path to one/many file(s). References will be resolved
    priority: string # references will be resolved
    read_receipt_to: string # references will be resolved
    return_path: string # references will be resolved
    reply_to: string # references will be resolved
    sender: string # references will be resolved
    if: # Optional. If set, the migration step will be skipped unless the condition is matched
        "reference:_ref_name": # name of a reference to be used for the test
            _operator_: value # allowed operators: eq, gt, gte, lt, lte, ne, count, length, regexp, satisfies