In order to enhance security for all of our customers, Twilio SendGrid is requiring existing free customers to update their authentication method to API Keys for all API and SMTP requests by Wednesday, January 13th, 2021.
Customers impacted by this breaking change will experience authentication errors when making API calls leveraging Basic Authentication. In order to ensure uninterrupted service, customers must update their authentication method to API keys by following the steps here: https://sendgrid.com/docs/for-developers/sending-email/upgrade-your-authentication-method-to-api-keys/
Twilio has conducted an outreach campaign targeting the registered account email addresses of all customers affected by this breaking change. We are taking the additional step of including this alert here to ensure the best possible alerting to our customers
If you have any questions or need assistance please visit our documentation (https://sendgrid.com/docs/for-developers/sending-email/upgrade-your-authentication-method-to-api-keys/
) or reach out to our support team (https://support.sendgrid.com/hc/en-us