Can I use multiple email providers with my website’s DKIM, DMARC and SPF?
I'm a software developer, with limited Mail server setup experience, running a little side SAAS on the side where I send emails to my customers. My domain has SPF, DMARC and DKIM setup and I use SendGrid email API for emails.
I'd like to be able to now enable my application to send email through either the current email provider I have OR using Amazon Simple Mail service API SMTP.
This means I would need to add SPF, DMARC and DKIM for Amazon Simple Mail Service. I know where and how to add these records but what I am not sure about is if it is possible or a good idea to add these records for both my existing email provider and Amazon Simple Mail Service.
In other words, can I send email using two or more email service providers through a single domain that I control where I add the DMARC, SPF and DKIM configuration.
Thanks
