Exim: How to configure delay between messages?

[Decepticon]

I need to configure exim4 to wait for ~1 second delay between messages sent from my vps. I’ve tried modifying the ratelimit configuration but it seems to only block outgoing mail if my email mkt tool’s sending rate exceeds the limit, without creating a delay between the two messages.

# Limit per email account for SMTP auhenticated users
  deny    message       = Email account $authenticated_id is sending too many emails - rate overlimit = $sender_rate / $sender_rate_period
          set acl_c_msg_limit  = ${if exists{/etc/exim4/domains/${lookup{${domain:$authenticated_id}}dsearch{/etc/exim4/domains/}}/limits}{${lookup {$authenticated_id} lsearch{/etc/exim4/domains/${lookup{${domain:$authenticated_id}}dsearch{/etc/exim4/domains/}}/limits}{$value}{${readfile{/etc/exim4/limit.conf}}}}}{${readfile{/etc/exim4/limit.conf}}} }
          ratelimit     = $acl_c_msg_limit / 1h / strict/ $authenticated_id

  deny    message       = Email account $authenticated_id is sending too many emails - rate overlimit = $sender_rate / $sender_rate_period
          set acl_c_msg_limit  = ${if exists{/etc/exim4/domains/${lookup{${domain:$authenticated_id}}dsearch{/etc/exim4/domains/}}/limits}{${lookup {$authenticated_id} lsearch{/etc/exim4/domains/${lookup{${domain:$authenticated_id}}dsearch{/etc/exim4/domains/}}/limits}{$value}{${readfile{/etc/exim4/limit.conf}}}}}{${readfile{/etc/exim4/limit.conf}}} }
          ratelimit     = 2 / 1s / strict/ $authenticated_id

  warn    ratelimit     = ${eval:$acl_c_msg_limit / 2} / 1h / strict / $authenticated_id
  log_message           = Sender rate [limitlog]: log / email / $authenticated_id / $sender_rate / $sender_rate_period

[Raphael]

short google search tells me, that this is only possible for incoming emails: how to configure delay between outgoing email in exim - Server Fault