Sending email in Divio applications

Divio does not provide mail services.

To send mail from your Django applications, you will need either to connect to a third-party email relay provided via an API, or an SMTP gateway. The former option is preferred, because it is generally more reliable.

SMTP traffic is liable to being blocked; often IP ranges as well as particular originating addresses are blocked in response to certain behaviour. In addition, some vendors (for example AWS) block certain traffic by default.

Using an API to a provider bypasses these problems and can also give you better control and more feedback.

Providers including Mailjet and Mailgun offer both API and SMTP gateway options.