Subdomain such as news.mydomain.com vs top-level domain for sending email and protecting reputation
A recent event got me thinking whether I should use a subdomain such as e.mydomain.com instead of mydomain.com to send my newsletter from.
Do you guys use a subdomain and why or why not? (this question is not about where to install sendy. I have that on a completely unrelated domain)
Here is a bit more background:
Some time ago, spammers had used my list-signup form and submitted a large number of addresses that didn't bounce.
Some did bounce.
I use double-opt-in, so a lot of people got an email asking them to confirm their subscription.
I am concerned that mishaps like this one (or a similar one) can cost my main domain reputation and, who knows, it might get blacklisted some time in the future.
Some companies use a subdomain to send their newsletters and other bulk mail from, while others don't.
Examples that use a subdomains:
- Mozilla.org uses e.mozilla.org
- Apple uses email.apple.com
- Yahoo communications.yahoo.com
- Goodreads.com mail.goodreads.com
Others don't use them:
- Wordpress.org and wordpress.com
- Most bloggers I have subscribed to.
On the side of email service providers, Mailgun recommends using a subdomain to protect one's main domain's reputation.
What do you guys think?