Good day,
Is there a shopify app where I can link my domain email to a proper email account. I need to send emails with attachments, and the internal customer email (dawn theme) does not allow for attachments.
Regards
Hey Good Day too 
.
You can use the Klaviyo Email Marketing for this.
Thank You for the response.
Hello @LalaLady ,
I hope you are doing well!
You can send the email with attachement or you can customize the email as per your requirement with the help of AiTrillion. With AiTrillion, you can not only do the A/B testing, you can segment the customers and based on the segment you can send the email.
If you want to know more, feel free to let me know.