# Understanding email aliases in Kustomer

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Source: https://help.kustomer.com/en_us/understanding-email-aliases-in-kustomer-SyNQOwZjze

Last updated: 2026-10-05T18:17:59.721Z

Email aliases let admins link a receive-only address to a sendable support address, so that when a customer emails an unrecognized email address, Reply still pre-selects the correct support address as the From address. This is useful for organizations that manage multiple brand-facing addresses — for example, a corporate relay address that receives mail forwarded from several brand domains. This article covers who can set up email aliases and what the feature does and doesn't support.

For setup steps, see [Using Email Aliases](https://help.kustomer.com/en_us/using-email-aliases-r1uSYPWjzg).

### In this article

*   [Who can use email aliases](#who-can-use-email-aliases)
*   [What email aliases support](#what-email-aliases-support)

### Who can use email aliases

Who can set this up

Admins with access to **Settings** → **Channels** → **Email**

Supported providers

Amazon SES, Gmail, Postmark

Supported surfaces

Classic web and Agent Desktop

### What email aliases support

Email aliases close a specific recognition gap in Reply. They don't change what reps can send from, and they don't affect how mail gets delivered to Kustomer.

*   Aliases are receive-only. Adding an alias doesn't make Kustomer accept mail for that domain — your mail server still needs to forward or catch-all that mail into a known Kustomer mailbox.
*   Aliases never appear in the From picker. Reps can only send from sendable support addresses (roots); an alias only affects which root gets pre-selected on Reply.
*   Each support address supports up to 50 aliases.
*   Aliases are available on Amazon SES, Gmail, and Postmark support addresses. Amazon SES parent-domain rows — rows without a specific email prefix — don't support aliases.
*   Aliases are separate from the _Use agent display name_ setting. Display name controls the name shown on an outgoing email, not which address is pre-selected.
*   Matching only applies to Reply, and only checks the inbound To address. It doesn't apply to new outbound messages, Forward, or CC.
*   If an alias and a Brand Address mapping could both apply to a conversation, the alias match takes precedence.