You're noticing a delay between mailgun getting the email and it getting to the client? I'm using their REST api to send emails, and I've yet to see an email t

You're noticing a delay between mailgun getting the email and it getting to the client? I'm using their REST api to send emails, and I've yet to see an email take more than a couple of seconds to get to destination (gmail) while testing. How long is too long?