SES sending emails at lower pace than my max rate?

Question

Hello,

I'm using SES to send mass emails, currently gradually migrating ~100K subscribers from another service.

At this point I have 7K subscribers on SES. My SES max send rate is capped at 300 email per sec.
To me this means I **should** be able to send 7K emails within < 25 secs.

However, looking at CloudWatch reports on a 1 min interval, it looks like the sending is really taking place over almost 2 hours, at roughly 130 sends per min (or ~ 2.3 sends per sec)

That's as little as 1%  of my actual max cap.

Since I plan to migrate tens of thousands of more subscribers, I need to figure out how to utilize my actual allowed send rate max. Any ideas?

thanks

Jose Guay · Answer

Hi TS.

Are you sending the emails with SMTP? If so, you need to [use the Amazon SES API to send email](https://docs.aws.amazon.com/ses/latest/dg/send-email-api.html), it is the only way to achieve higher throughput. Also, note that you should have a way to control the send speed as to not exceed your limit, otherwise, the process will be throttled and you will experience delays.

I hope this helps.

SES sending emails at lower pace than my max rate?

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