This pro tip suggests that when setting up a new domain for sending emails, it is important to ensure that the domain has been registered for at least 24 hours before sending any messages. This is because many mailbox providers, ISPs, and email services such as Gmail and Yahoo have implemented blocking systems that reject mail from new domains, and this includes test messages. It is also important to consider “domain warming” and building up the domain’s sending reputation over the first few weeks.
Excerpt from the main article:
Here’s an easy tip that I wanted to share with everyone. It’s something I knew about myself but didn’t take into consideration (I guess I got tripped up in my own “do as I say, not as I do” kind of thing). As mentioned, recently I set up my own mailbox provider to host my own mail, and as part of that, I set up a new domain name. (I didn’t HAVE to set up a new domain name, but it made setup a bit easier; I could dedicate the whole domain to my new project, and I could simply
Pro-tip: Age that new domain before sending was originally published on Spam Resource: All Things Deliverability
