How can I limit exim's sending per minute?

Question

Exim

All manuals and regular features described on the Internet limit sending by an hour limit,
for example:
acl_not_smtp:
deny message = Sender rate overlimit - $sender_rate / $sender_rate_period
ratelimit = 50 / 1h / leaky
accept
acl_check_rcpt:
deny message = Sender rate SMTP overlimit - $sender_rate / $sender_rate_period
ratelimit = 100 / 1h / leaky
How can I set a limit per minute, for example, no more than 3 letters per minute with 1 connection when connected, and the rest in the queue.

Answer 1

You need to read the manuals more carefully. Fully.
there are also letters m and s.