The information comes from an official support page in Hindi, which states that a new feature will be rolled out gradually to users, so it may not be available right away.
According to the support page, once every 12 months, Google will allow users to “change” the email address associated with their Google account. This process resembles adding a new alias email, as the original email address will remain functional. Users will have one inbox and outbox, but will presumably be able to filter messages based on which email was used and choose the email for outgoing messages. Essentially, Google is providing a way to connect up to three new email addresses with an existing account and its associated data and services. It remains unclear if this will also permit users to merge an alternative account into an existing one.
This development could be notably beneficial since many users have multiple Google accounts. People often create separate accounts for different email channels. Although Gmail does not officially support such setups, it does provide features like server-side email filtering and conditional forwarding for free, albeit hidden in legacy settings. This potential change could enhance complex email setups and may have implications for managed Google accounts, such as those used on school Chromebooks.
There are some restrictions, including a limit of three new email addresses added at intervals of one year, totaling a maximum of four addresses. Additionally, users cannot delete any of the added addresses. It is still uncertain whether this feature will apply to Google Workspace accounts with custom email domains. Many questions remain unanswered.

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