Not receiving anymore email from AWS SES

Help and Support
1

Hello, from yesterday the emails that I send from AWS SES (email-smtp.eu-central-1.amazonaws. com) do not reach the Mailsac inbox. I believe nothing changed in my SES configuration.

I am sending emails to three public emails:

  • sushicorner_test_customer@mailsac. com
  • sushicorner_test_employee@mailsac. com
  • sushicorner_test_admin@mailsac. com

In the last 24 hours I have tried to send 68 emails, 9 of which few minutes ago. Before yesterday, everything was working fine.

Thanks in advance!

2

Hello dtom,

Sorry for the trouble you are having receiving mail sent to [email protected], [email protected] and [email protected]`.

I have reviewed the logs and your messages are being blocked, probably not because of anything you specifically did. We do a variety of different types of throttling on inbound messages. We started to receive lots of messages from the email server eu-central-1.amazonses.com at 02:00 UTC on 2023-06-08. This is the same email server you are using and throttling has been applied to that email server.

If you were to send to a custom domain or private address there is a much higher throttling limit and you would not be having these mail delivery issues. Both of these features are included in our indie plan which is $18 per month.

3

Thanks for your reply and explanation @mjmayer. I’ll look into the indie plan.

4

Hi, I have the same issue, several emails were sent successfully, but then it started not to send, for example on this email [email protected]

5

Hello Anush,

I checked our logs. Messages from AWS SES are continuing to be throttled depending on volume. As I suggested to the other customer on this thread, I would suggest using a custom domain or private address. Both of these features are included on our Indie Plan.

6

Hi, I have the same issue. From 9 of August, I stopped receiving emails for my mailsac mail from AWS SES.
email: [email protected] or [email protected]

7

Hi Dymtro,

We are continuing to get thousands of messages per hour from SES particularly from the eu-central-1 region. Our paid plans offer higher throttling limits.

8

Here are a few things to check:

  1. Check SES Limits: Ensure you haven’t hit your SES sending limits.
  2. Look for Bounces: Check SES for bounce or complaint notifications.
  3. Spam Filtering: Mailsac might be filtering your emails. Test sending to another email provider.
  4. DKIM/SPF Records: Verify your DKIM and SPF settings.

If the issue persists, you could try using alternative SMTP servers like SMTPmart, Mailgun or SMTPget to see if that resolves the problem.

Let me know if this helps!

9

I agree that using an alternative SMTP provider to send may help get around throttling when sending to mailsac. However, all of our plans, include custom private domains which allow for a much higher throttling limit. We have many customers who are sending from SES and not experiencing any throttling because they are using a custom private domain.

Our Zero-Setup Custom Subdomain feature allows for the creation of a custom subdomain in seconds with no DNS changes required.

We recently added a load testing feature which allows customers to send tens of thousands of messages in order to test their SMTP sending limits. This can be useful if throttling does become an issue on a custom private domain.