Hello @Sana_Afreen ,
Refer the below post. It can solve your issue.
This is how I have done
When it is coming to 2nd assign activity of base64string it is taking longer time and giving me the above error
Okay @Sana_Afreen, no worries.
I will provide you a sample demo by today which will have 2 to 3 images to convert to B64 and embed in mail using outlook activities.
Thanks
#nK
Thanks alot