Starting in January 2027, Gmail will no longer support the “Send as” feature for third-party email addresses such as `@yahoo.com` or `@outlook.com`, according to Google’s help documentation.
The change affects a long-running Gmail feature that lets users send messages from a different address while using Gmail as the mail client. Google says the update will not affect Google Workspace aliases or other Gmail addresses a user owns. In other words, the company is narrowing the feature rather than removing all alternate sender support.
For many users, the practical effect will be modest. If you already send mail from another address you control, Gmail says that remains possible for owned aliases and supported accounts. But users who rely on third-party providers for their outbound identity will need to adjust. Google’s own help page also notes that recipients may sometimes see a message coming from a Gmail address “on behalf of” another domain, depending on the receiving service.
The company’s documentation emphasizes that Gmail can still be used to send from up to 99 different email addresses. It also explains that if an alias is invalid, messages will bounce, and if a valid address needs to be reverified, the sender may have to delete and re-add the address before using it again.
Google’s wording suggests this is part of a broader cleanup of third-party email account support rather than a sudden product shutdown. The help page points users toward changing both the default “From” and reply-to settings if they want to always send from another address. It also notes that replies will otherwise flow back to the original Gmail address by default.
The biggest immediate consequence is for users who have built workflows around Gmail as a hub for non-Gmail identities. That group includes people who use Gmail to aggregate business, personal and legacy accounts, as well as anyone who has depended on a third-party provider for the visible sender address while composing inside Gmail.
Google’s page does not frame the change as a security incident or service outage. It reads more like a product-policy shift that will force affected users to simplify how they send mail. The company does not say why the feature is being removed from third-party addresses, but it does make the January 2027 deadline clear.
For now, the main takeaway is straightforward: Gmail users who send as Yahoo, Outlook or other external domains have a year-end cutoff date to rethink that setup. Owned aliases and Workspace-based sending remain in place, but third-party sender identities are on the way out.
