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I wonder if it is possible to swap SES for a custom Emailing Provider? I am already using one, and I don't want to configure another one because AWS Cognito needs that. Maybe there is a way to suppress all the emails coming out of AWS Cognito?

Thanks Przemek

user3647324
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Changing the Email provider to anything else than AWS Cognito or AWS SES – or suppressing the outgoing messages programmatically was not possible. The only possibility was to use a Lambda trigger to at least be able to modify the template of the message: Custom Message Lambda Trigger

Until probably a few weeks/months ago:

Custom sender Lambda Triggers

Amazon Cognito user pools provide two Lambda triggers CustomEmailSender and CustomSMSSender to enable third-party email and SMS notifications. You can Use your choice of SMS and email providers to send notifications to users from within your Lambda function code.

I did not find any release or change message on when they introduced those new triggers, but I am super happy I finally stumbled across this! I felt so much joy I almost cried.

Michael Birsak
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