Tap "Reply by email" on the request in Leads. It opens an email to the client. When you've replied, tap "Mark as replied." If you marked one by mistake, tap "Not yet." The client sees in Your requests that you've replied.
Tap "Reply by email" on the request in Leads. It opens an email to the client. When you've replied, tap "Mark as replied." If you marked one by mistake, tap "Not yet." The client sees in Your requests that you've replied.