Do I need to add all subdomains to Google Postmaster Tools?
Summary
What email marketers say12Marketer opinions
Email marketer from Gmass Blog explains that adding each subdomain allows for tracking of individual sending reputations. As such, each subdomain needs to be added to Google Postmaster Tools in order to spot and resolve domain reputation issues.
Marketer from Email Geeks explains that it's important to know which domains/subdomains are used for authentication. Google Postmaster Tools 'groups' data by either the SPF or DKIM domain. Add all subdomains used for authentication purposes.
Email marketer from Litmus Blog shares that subdomains have their own email sending reputations which means that they should each be tracked separately within Google Postmaster Tools for accurate insights.
Email marketer from Mailgun Blog explains that best practice is to use separate subdomains for marketing and transactional emails, and each of these subdomains should be added to Google Postmaster Tools to ensure optimal deliverability and reputation monitoring.
Email marketer from Email Deliverability Forum mentions that tracking each subdomain in Google Postmaster Tools is vital for proper monitoring and diagnosis of email deliverability issues, as each subdomain’s performance is independent.
Marketer from Email Geeks explains that domains and subdomains maintain separate reputations, so you'll want to add subdomains to Google Postmaster Tools.
Email marketer from Sender explains that each subdomain needs to be added to Google Postmaster Tools so you can assess the health of individual subdomains and fix any deliverability issues as soon as possible.
Email marketer from Mailjet Blog shares that it is recommended to verify and add subdomains to Google Postmaster Tools in order to achieve a full overview of all your email activities and to better monitor deliverability metrics.
Email marketer from Reddit explains that each subdomain maintains its own reputation. Therefore, to get an accurate view of your overall email health, you should add each one to Google Postmaster Tools.
Email marketer from Stackoverflow user explains that adding subdomains to Google Postmaster Tools is essential for a complete view of your email performance, as it provides specific deliverability metrics for each subdomain.
Marketer from Email Geeks explains that yes, you need to add each subdomain to Google Postmaster Tools, and suggests using DMARC data to figure out the active subdomains.
Email marketer from SparkPost Blog explains that subdomains each have their own reputation. To properly manage and monitor deliverability, especially for marketing vs. transactional emails, each sending subdomain should be added to Google Postmaster Tools.
What the experts say2Expert opinions
Expert from Spamresource explains that each subdomain has a unique reputation; you should add each one to Google Postmaster Tools to fully monitor and understand its sending health.
Expert from Word to the Wise explains that to get a complete view of your email program's reputation, adding all subdomains used for sending to Google Postmaster Tools is crucial. This allows you to track separate reputations for transactional and marketing emails.
What the documentation says5Technical articles
Documentation from RFC explains that subdomains are considered to be distinct entities, each capable of having unique SPF, DKIM and DMARC records. Managing email authentication seperately allows you to control each subdomain in Google Postmaster Tools
Documentation from DMARC.org states that DMARC policies apply to subdomains independently, meaning each subdomain should be monitored and managed separately in Google Postmaster Tools for proper authentication and reputation management.
Documentation from Google states in its FAQ that you should add each subdomain to Postmaster Tools to gain visibility into its individual sending reputation. This separation is key for identifying and resolving issues specific to certain email streams.
Documentation from Google Support explains that to monitor email performance for different parts of your infrastructure, add each subdomain in Postmaster Tools as a separate verified domain. This allows granular tracking of reputation metrics.
Documentation from Microsoft explains that the SPF record must be setup for each subdomain to ensure proper email authentication and to allow for granular reputation management within Google Postmaster Tools.