https://community.blueprism.com/t5/Product-Forum/can-any-one-explain-me-how-to-use-the-code-stage-and-i-want-use/m-p/87283#M38015 There is a product data sheet availalbe in this portal called: Blue Prism Data Sheet - Extending Automations using the .NET Framework  - that should be your starting point.   My recommendation would be to use a true development IDE if you are doing anything more than a few lines of code.  Then transfer your code into Blue Prism code stages when you are happy with it.   I presume that the SMTP/POP and MapieX email interfaces that are provided by Blue Prism do not do what you need? Tue, 02 Jan 2018 20:27:00 GMT Denis__Dennehy 2018-01-02T20:27:00Z https://community.blueprism.com/t5/Product-Forum/can-any-one-explain-me-how-to-use-the-code-stage-and-i-want-use/m-p/87282#M38014 How to write the C# code in blueprism and any Dll we want to import for writing C# code Tue, 02 Jan 2018 16:12:00 GMT https://community.blueprism.com/t5/Product-Forum/can-any-one-explain-me-how-to-use-the-code-stage-and-i-want-use/m-p/87282#M38014 kirankumarReddy 2018-01-02T16:12:00Z https://community.blueprism.com/t5/Product-Forum/can-any-one-explain-me-how-to-use-the-code-stage-and-i-want-use/m-p/87283#M38015 There is a product data sheet availalbe in this portal called: Blue Prism Data Sheet - Extending Automations using the .NET Framework  - that should be your starting point.   My recommendation would be to use a true development IDE if you are doing anything more than a few lines of code.  Then transfer your code into Blue Prism code stages when you are happy with it.   I presume that the SMTP/POP and MapieX email interfaces that are provided by Blue Prism do not do what you need? Tue, 02 Jan 2018 20:27:00 GMT https://community.blueprism.com/t5/Product-Forum/can-any-one-explain-me-how-to-use-the-code-stage-and-i-want-use/m-p/87283#M38015 Denis__Dennehy 2018-01-02T20:27:00Z