Why would you want your email subdomain to be as short as possible?

Email marketer from Neil Patel's Blog explains that shorter subdomains can improve branding by making the primary domain more prominent in the email address.

Marketer from Email Geeks shares that recipients care about verifying the sender, which relates more to the top level domain than the subdomain and that a long subdomain is just noise / clutter / friction in that process and for that UX reason, and not for any technical reasons, he prefers short subdomains.

Email marketer from EmailOctopus Blog shares that shorter subdomains are easier for recipients to remember and type, which can improve trust and reduce the chance of typos when sharing or subscribing.

Marketer from Email Geeks explains that short sub-domains are pushed because when presented by the MUA it puts the focus on the brand - theoretically increasing the value of the impression.

Email marketer from Mailjet Blog explains that a shorter subdomain can help in maintaining a clean sender reputation as it's easier to monitor and manage, especially in smaller organizations.

Email marketer from Stack Overflow shares that short subdomains helps keep URL lengths shorter reducing complexity with parsing and limitations with some servers.

Email marketer from Reddit says that shorter subdomains are visually more appealing on mobile devices where screen real estate is limited.

Marketer from Email Geeks shares that domain length is irrelevant because most MUAs (email apps) will show the friendly from (the name) and when they reveal the domain, they will usually show all of it.

Email marketer from Quora explains that using a shorter subdomain helps build sender reputation faster, as it's easier for recipients to recognize and trust the sender.

Email marketer from SVS shares that some sending verification systems limit the length of domain names, so short helps avoid sending issues.

Expert from Spam Resource explains that shorter subdomains can lead to slightly improved deliverability due to easier processing by older email systems, though this is less critical now than in the past.

Expert from Email Geeks says that looking at the particular example, the terms 'info' and 'notifications' are either redundant or contradictory, and he doesn’t see it helping with recipient comfort.

Expert from Word to the Wise answers that subdomain length considerations can influence how easily a sender's reputation is tracked. Shorter subdomains may allow for easier monitoring and management of sender reputation.

Expert from Email Geeks shares that there was a point (like 20-some years ago) when a couple ESPs used very short sending domains because bandwidth was an issue and they could send faster with smaller domains.

Documentation from Microsoft shares that while DNS allows long domain names, shorter names can simplify DNS management and reduce the risk of errors during configuration.

Documentation from RFC Editor specifies that while there isn't a hard limit on subdomain length, shorter domain names contribute to overall message size efficiency and parsing speed for mail servers.

Documentation from AWS explains that there are overall length limits for an email address, and using a shorter domain leaves more space for the local-part (the username).

Documentation from Google explains that shorter domain names in the 'From' address can help reduce the likelihood of truncation in certain email clients, particularly on mobile devices with limited screen space.