Capturing relevant information from the body of emails sent to a process model

I'm trying to create a feature to allow users to communicate by email and have their communication tracked by Appian and stored in a database. However, I'm having a hard time capturing the meaningful information from the body of the email message. Email signatures and the content of emails earlier in the chain are also captured. Has anyone implemented a solution that does what I'm trying to accomplish?

For example, I tried sending an email with just the word "Testing" in the body, but striphtml(msg!body) returns all of this garbage, including my email signature:

Testing________________________________[cid:image001.jpg@01CC47C6.5B839AF0]John StrettonEDP Renewables North AmericaCorporate InitiativesAddress here, Houston, TX 77002Direct xxx.xxx.xxxxwww.edpr.comTake action. Use energy efficient products.This e-mail is for the use of the intended recipient(s) only. If y...

OriginalPostID-257049