How to Get Outgoing E-Mail Settings Programatically

Sometimes it might be needed to get the Web Application outgoing emails settings programatically.
The below code snippet gives all the settings including Outbound SMTP server, From address, Reply-to address and Character set information.

using (SPSite site = new SPSite("http://siteurl"))
{
    SPWebApplication webApp = site.WebApplication;
    string outboundSMTPServer = webApp.OutboundMailServiceInstance.Parent.Name;
    string fromAddress = webApp.OutboundMailSenderAddress;
    string replyToAddress = webApp.OutboundMailReplyToAddress;
    int characterSet = webApp.OutboundMailCodePage;
}

Web application outgoing email settings can also be updated programatically as below.

using (SPSite site = new SPSite("http://siteurl"))
{
    string outboundSMTPServer = "Outbound SMTP server";
    string fromAddress = "From address";
    string replyToAddress = "Reply-to address";
    int characterSet = 65001; //Character set code

    SPWebApplication webApp = site.WebApplication;
    webApp.UpdateMailSettings(outboundSMTPServer,fromAddress,replyToAddress,characterSet);
}

Similarly we can get & set the Global outgoing email settings as below.
GET:

var globalAdmin = SPAdministrationWebApplication.Local;
var outboundSMTPServer = globalAdmin.OutboundMailServiceInstance.Parent.Name;
var fromAddress = globalAdmin.OutboundMailSenderAddress;
var replyToAddress = globalAdmin.OutboundMailReplyToAddress;
var characterSet = globalAdmin.OutboundMailCodePage;

SET:

string outboundSMTPServer = "Outbound SMTP server";
string fromAddress = "From address";
string replyToAddress = "Reply-to address";
int characterSet = 65001; //Character set code
var globalAdmin = SPAdministrationWebApplication.Local;
globalAdmin.UpdateMailSettings(outboundSMTPServer, fromAddress, replyToAddress, characterSet);