--- title: How to prepend all External email Subjects with  [External Source]? description: External email Subjects with  [External Source]? --- [Skip to content](https://support.econz.net/customer/how-to-prepended-all-external-email-subjects-with-external-source#main-content) English Show submenu for translations [Customer portal](https://support.econz.net/portal?hsLang=en) ![logo.jpg\]](https://support.econz.net/hs-fs/hubfs/logo.jpg?height=40&name=logo.jpg) Open main navigation Close main navigation - English Show submenu for translations - [Customer portal](https://support.econz.net/portal) - Go to Econz Website Go to Econz Website Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://support.econz.net/customer?hsLang=en) 2. [Google Workspace](https://support.econz.net/customer/google-workspace?hsLang=en) 3. [Gmail](https://support.econz.net/customer/google-workspace?hsLang=en#gmail) # How to prepend all External email Subjects with  \[External Source\]? ## External email Subjects with  \[External Source\]?   Prepending all external email subjects with \[External Source\] is a way to easily identify emails that come from outside the organization, and to help users be more cautious when opening or responding to those emails.   **Steps to prepend all External emails subject with \[External Source\]**   :- Go to [https://admin.google.com/](https://admin.google.com/)   :- Apps\>Google Workspace\> Gmail\> compliance \> Content compliance\> Add another rule.   ![](https://lh3.googleusercontent.com/KevOmrySd6mBUFz8_spxdndGX7LXe5d0e_paUFbhxruOkbwV9orB5jTNR8Jn5YRXEpEAawWf8lTUp-xaqYi-H8eSDPuuTw-PmAiAAD0DMM6xyTOoCco58mWcFk1H-S0ABV2qru68nVDM-6w1OQsviCk)   ![](https://lh4.googleusercontent.com/bYZOiJqWETeJhN672oCbJrFmqurtbOGaRY4jWZ1aiiJLWvpSEjuVag3dFe3UuxUBC_7Kc8iH8TW1hBur2Vyld4O5WK4ZHVqVWdBOX4rb6jWoK3YGAbO1cQbvBHIsKGe2Me6IBxmP3n0nNVjWpQ7aeLA)   ![](https://lh5.googleusercontent.com/m9CHNeKIkw_xuNHbPqgq5yGrDjNOh2EslhdgF0XR0D3hsmzqtb-p63OdUc-pF2BJGgDAFsEqQruxCn5nrBov6CMIhWjakvKECrzmoYuSlCrSRkED5Tj51jJwdVYFz0DR-4u78jEfKrsr2Po7_8jSGLk)   Give the NAME   Check mark Inbound 1. Add expressions that describe the content that you want to search for in each message   Add   Advanced content match   Location\>Subject Match type \>Not contains text   ![](https://lh3.googleusercontent.com/E5rCAPiWB9lNG63GzhFhJTRdfjPgGL9fRbE1mQSsFGefvLgTZPkh9TK2MwK58dZGCr9US1sF3Vamd2Ldcui8MU8C3xDW0N0Ur1n9Qw60Ka7AA-PZ3GXPFtvtHIj4AzYMwQ8SV1N6XqfOh3WcFi8P2r8)![](https://lh5.googleusercontent.com/gufSH6pJC1intjHf74p0GOIg1SALV0z-XSM-iP_GrSqkmBvlVLAQfHRqMPF_Fmw9ymw7KVuoIYgfwQmQOCqdXHYCaPcsW9Jf8sr4rITNCfTL2v3lwZQPvAXHRIYjCXpwe4qSXuPAlHARqmYCygoszWM)![](https://lh3.googleusercontent.com/g5GhxylgNa0_qNiu9p-tvAw7FdyTZXr_VOn8uX5dZEObZK654osmG8JH4XysIUMafC3DaGSPjeH82DVn3E938sofhkX1dMH4WKTq48eUxyNHW-at0ngjySFFnj04ePblJ9ZI-gMh6ipmsakvDD4pcvw)   Here give the same message as   ![](https://lh5.googleusercontent.com/eVCgF7lk1LkCacNyGQMsqxBcv1QezNukrbOiSTBJqRR4W09bN3m7W1LJjYl-Zpx-q65tzZ951Nfk9pNBPAUanzA1rVXpG8_BwQpWR3BwI5LVhLRl6P60Iyz7kZjQEtR5TnjY43T8ZCjKGhWDljoslhA)   ![](https://lh6.googleusercontent.com/JyclYkhrD6vSfB1jN6nCAViO6uGS3d3aeCvPFVdcNUoFAH-HR965tjTPgTrE_XNh9lXpVLd5-xG64ksc5GeymDtSGK82l8w8paae6pK_KmBnOXXRYc_xXvQIqYOEmKXf0V2I3WWEe4y2I_L669aGbK4) Then save Subject Prepend the custom subject Give the same message   Then **save**   ![](https://lh6.googleusercontent.com/MQHMaq54Ebekr_dgRm_LYsXlgx78S-5yWyrL_60QBvhbso5mMfPU0UepaNRqicYJDobItGBEVeJ2ek9VK_WjCktM8rmNnajKszdscq3xsCpB5EF3FQlfMYU3MYtVQ9axUKjDcUBhx2Q__QTJf6uDuX8)   Please find the below support article for your reference:- [https://support.google.com/a/answer/1346934?hl=en](https://support.google.com/a/answer/1346934?hl=en) - 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