Robly runs on top of SendGrid, which supports full DMARC compliance. More about Robly and DMARC can be found here: https://support.robly.com/all-about-dmarc/
Visit: https://support.robly.com/custom-dkim-and-spf/ for DKIM configuration.
Add 'include:_spf.robly.com' to your SPF. For more information, visit: https://support.robly.com/how-do-i-adjust-my-spf-record/