Hi @AlexandriaAM ,
I understand how important it is for your emails to be delivered to the recipient's inbox. We have some general best practices for deliverability that you may wish to look at. We also generally encourage setting up authentication. You may also wish to speak with Deliverability for more insight and for targeted, 1:1 support.
As far as the promotions folder goes, Gmail introduced different inbox tabs, including the Promotions tab, to help improve deliverability and open rates, and to decrease spam complaints from their users. They deliver emails to these tabs based on constantly changing algorithms that take variable data into account, including sender information, email content, and recipient engagement. There are some things you can do to help them land in the Primary tab, however. This guide should give more insight into that.
... View more
