The same emails are being sent multiple time to the same customer about magento2-mandrill HOT 19 CLOSED

I have the same issue (in multiple websites), but rather in version 3.0.11.
What I've noticed is that order confirmation emails are sent twice.

I downgraded to 3.0.10, it started working again then.

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ping @centerax

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Does this have an update , we also getting the same issue with module version 3.0.11 and Magento version 2.0.15

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Also experiencing the issue with module version 3.0.10 and Magento version 2.1.7. For me the problem is occurring in a custom module I use to send shipment emails. When using the shipment sender function in a loop, I just get multiple copies of the first email in the loop:

$this->shipmentsender->send($shipmentData);

This has to be related to the email functionality as in the same loop the tracking is assigned under the $shipmentData object which iterates through each email perfectly. Also if I disable the Mandrill extension, the emails are sent correctly.

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This was introduced here:
17ca40f#diff-8564704260549e71a21bcfaef977ef33
Reverting back to class replacing, instead of plugin can be used to workaround.

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We will take a look on Monday. Thanks

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as per the different comments version 3.0.11 is not the cause because this problem is happening on 3.0.10 as well. correct?

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@jbalca What do you see on your mandrill account under https://mandrillapp.com/settings/api? Do you see multiple api calls for one order? I still cannot replicate this with new order or shipments.

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@centerax Hint: try to send more then 1 message per Magento run, for example 'Send to a 2 Friends'.
It's not multiple per message, but 1st message as messages Magento have to send.

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@pyostrike thanks. I have tried and both messages are sent okay. Can you provide logs and/or more information on how to replicate step by step?

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@centerax sorry, have no access to mandrill anymore.
I did following as a test:

• opened a product at Magento store.
• pushed a 'Send to a Friend' button.
• in form added [email protected] as first 'to' address
• then added [email protected] as second 'to' address
  In mandrill api logs there were 2 sent messages, but each to [email protected], so it was two api calls, but the object ( message ?) used in both calls was the first created (to [email protected])

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As per earlier comment, I'm using 3.0.10 and experiencing the same issue described above with a custom module that sends shipment emails.

Works fine with Mandrill disabled but with Mandrill, the first email in the loop is duplicated x times for each iteration. So I'm not convinced the issue is isolated to 3.0.11...

Mandrill API logs are correct as per the emails being sent, i.e x emails to the first iteration.

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I'm fairly certain the fix I detail in #37 is also tied to this issue.

I can only guess that different expressions of this issue are being caused by differing PHP or Magento versions.

Do you need me to create a PR with a core fix instead of a separate plugin?

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@Silarn We dont need you to do anything :) if you want to contribute, go for it!

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finally, I was able to replicate.

looking for a solution, will review what @Silarn provided.

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guys, we merged @Silarn PR to develop. Can you test and see how it goes?

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I know this change (as a second module disabling the original plugin and adding essentially the same alternate plugin switching between Transport models) has solved any email dispatch issues I was having after upgrading to 3.0.11. I never noticed any duplicate message problems, but it was only live for a short time before I noticed an issue and pushed a fix.

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Hi there.
We are experiencing this issue in our M2 shop also with module version 3.0.11.
Our business logic is to send 3 order confirmation emails to 3 different address. But we received 3 same emails to the 1 address among 3.

We just tried your develop branch with #42. This fixed the issue for us.
@centerax we confirm that issue is fixed with #42.

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