22. Can we activate incoming alerts to the user who sent the outgoing message?

Salesforce:
Yes, last sender incoming alerts can be activated in SMS Converse.

Important Announcement!

URGENT! Please register the 10-digit business phone number (e.g. 555-555-5555) that your organization uses to send texts to consumers in the U.S. Failure to register may cause heavy penalties and disruption to all your text messaging communications.