Capable of generating DMARC compliant email for others? yes
Capable of signing email with DKIM for others? no
Capable of sending SPF compliant email for others? yes
Notes on Capabilities
DMARC: DMARC compliance via SPF. BigCommerce can be configured to send directly on behalf of your domain.
DKIM: DKIM is not natively support, but BigCommerce allows for SMTP Relaying so you can route through DKIM-enabled infrastructure: https://support.bigcommerce.com/articles/Public/Using-a-Custom-SMTP-Server
SPF: See https://support.bigcommerce.com/articles/Public/Setting-Up-Email-Services/
When deploying DMARC, domain owners often find new sources of email.
Domain owners then wonder if the source is capable of sending DMARC compliant email.
This directory contains information on the capabilities of various sources of email.