SES failing sending to subscribers, test email OK

I’ve used Mailgun, SendGrid, G Suite; WP Mail SMTP handled the connection, and didn’t have this issue sending to subscribers.

The OSES table stores the subscribers’ emails in serialized entries. OSES isn’t unserializing them prior to sending. Are there issues in API syntax? Where can I go to fix? I’m 5+ days in (behind) – please assist!

[18-Jul-2019 21:29:44 UTC] WP Offload SES #202: There was an error attempting to send your email. (Failed to instantiate the AWS SES client. Check your error log.)
[18-Jul-2019 21:29:44 UTC] PHP Notice: Undefined offset: 1 in /home/<xxx>/public_html/wp-content/plugins/wp-ses/classes/Email.php on line 228
[18-Jul-2019 21:29:44 UTC] PHP Notice: Undefined variable: params in /home/<xxx>/public_html/wp-content/plugins/wp-mail-returnpath/index.php on line 17
[18-Jul-2019 21:29:44 UTC] PHP Notice: Trying to get property of non-object in /home/<xxx>/public_html/wp-content/plugins/wp-mail-returnpath/index.php on line 17

Hi,

It looks like there’s a few issues at play here.

First, the Activity tab does need to unserialize the recipients before displaying them, but this won’t affect the sending of mail. The recipients are unserialized before the email sent. I’ve just raised an issue on our internal issue tracker so we can make sure the activity tab displays the recipients properly in the next release – thanks for the report on that.

It looks like there’s an error when adding a header to the email. Do emails work with the “wp_mail return-path” plugin disabled? There seems to be an error with that plugin as well, so I wonder if that’s related somehow.

What are you using to actually send to your subscribers? Some other plugin?

HI im having the same problem, debug says this:

Thanks

[05-Dec-2019 18:22:35 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:23:36 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:23:38 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:24:01 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:24:01 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:25:36 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:25:37 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:26:01 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:26:02 UTC] WP Offload SES #101: Mail function already overridden.
[05-Dec-2019 18:26:10 UTC] WP Offload SES #101: Mail function already overridden.