Here are some best practices for securely storing SMTP credentials:
Encryption: Always encrypt your SMTP credentials. Use strong encryption methods like AES (Advanced Encryption Standard) to ensure that your credentials are not easily accessible. Environment Variables: Use environment variables to store SMTP credentials. This practice keeps them out of your codebase and reduces the risk of accidental exposure. Secret Management Tools: Utilize secret management tools like AWS Secrets Manager, HashiCorp Vault, or Azure Key Vault. These tools are designed to securely store and manage sensitive information. Access Control: Implement strict access control policies to ensure that only authorized personnel can access the credentials.