Error got sending mail from custom activity

I already try this mail send but got error as mention in screen shot.when I enter nothing then it work for me as you can see in second mail mention in attachment.but I need to mention from mail “

mc@jamesriverins.com

@Aditya10989

Yes, if you want to send mail on behalf of other person then you should have permission. Then only it will send mail.

ok which permission from where i need to insert…?

@Aditya10989

Is the client email id configured in your outlook or not ? If not then do it.

ok you means where this application will execute everywhere client email id configured in every system.then it is not possible.we have to look for another solution

Yes.

I am using custom activity but not working.In start I have mention do you have any idea…?

I’ve merged the two topics. Please continue the discussion in 1 topic and avoid creating multiple ones for the same issue.

i am also trying the same can you help me on this please