Though it’s not important and usually debated, it’s important to note that many people recommend using a non-main domain to send emails during the first few months of a product being launched. If a malicious group of users request many email requests (such as reset password email) and mark them as Spam, there is a chance that it may hurt email deliverability. Hence it is suggested for 6- 8 months, the secondary domain be used that is like the main domain, such as ([factiii.co](http://factiii.co "‌") or [factiiimail.com](http://factiiimail.com "‌")).