Hello @JenB7301 ,
Test emails should send right away, but may be delayed depending on security factors on the receiving end. I was able to get test sends of your recent emails to come through right away, so you may want to check and see if your system erroneously filtered them or put them in your junk/spam folder.
Here are some general best practices for deliverability.
Deliverability can have a lot of variables, from elements on our side, on your side, on the recipient's side, and in their email system company's side. It's also a generally good idea to set up additional authentication for your emails - whether that's through us if you have a free domain (e.g. Gmail, Yahoo, AOL, etc.) or via self-authentication if you have your own domain (such as through a business or other organization).
If you'd like to learn more about safelisting, and what it entails:
If you're wanting more in-depth, specialized insight on your current deliverability, it'd be worth speaking with one of our Deliverability agents.