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Dhanesh SubramanianDhanesh Subramanian 

how to remove attach action button during the post action in mobile salesforce?

action button screenshot
Madhanprabhu Thangadurai 1Madhanprabhu Thangadurai 1
Hi Maximus,

Standard actions are actions that are automatically included when Chatter is enabled—such as Post, File, Link, and Poll. You can customize the order in which these Standard actions actions appear, but you can’t edit their properties. Standard actions require that feed tracking for objects is enabled.

Post action and their properties are standard and it is not possible to remove  from salesforce1 app.
Gaurav KheterpalGaurav Kheterpal
It's not possible to hide or remove this button. You can see this ( thread which explains this in detail.

If my answer helps resolve your query, please mark it as the 'Best Answer' & upvote it to benefit others and improve the overall quality of Discussion Forums.

Gaurav Kheterpal

Developer Forums Moderator| Certified Developer| Dreamforce Speaker| Salesforce Mobile Evangelist