Same problems here, WP/CF7/WP Mail SMTP. I fixed this by doing the following:
Step 1: Make the from and to field different addresses. I used [email protected]
Step 2: After that I cleared the field “Reply-To Email Address” in WP Mail SMTP.
Step 3: Then I added my new address to “Don’t Replace From Field” in the advanced settings of WP Mail SMTP.
