Rails ActionMailer add a delay for few milliseconds before sending an email

Question

Is there a way to achieve above at a single place, as we have lot of places to send email and can't change email sending calls to add a delay through out the application code base.

We just want to make sure that not more than X emails are being sent in 1 second.

We are using rails 2.3.5.

Thanks

EDIT

We are using Amazon SES for sending emails. Initially they allow 1 email per second. What happens if we send more than one emails per seconds. Would SES queue them or throw some exception?

Answer 1

1. Make your mail sending logic async by using a job queue, for example delayed_job or resque
2. Have a job processor that takes jobs from the queue and processes them, as such you can control the sending interval from the processor logic