Impact of migrating to Signature Version 4 in AWS SES where we use AWS SES SMTP credentials in sending email in PHP application?


We have recently got an email from Amazon.

We have several PHP Codeigniter applications where we use Amazon SES SMTP credentials to send email. we don’t use AWS Access Key & Secret Key to send email. So I assume this migration to Signature Version 4 wont affect on our application. Can anyone assure me that if my assumption is correct ?


If you’re using SMTP to send emails using SES, sigv4 shouldn’t affect you, it’s only for sendemail or sendrawemail api calls.

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