I was coming here to say the same thing, not working here either.
I hope this can be fixed soon.
Tim
@mtstudios
You can also add
flamingo_subject: [your-subject-field]
in the additional settings field on CF7 for that particular form.
Don’t forget to change the string “your-subject-field” to the name of your field. You should also be able to put a static arbitrary string in place of the merge tag.
Hope the helps,
Tim
@mtstudios
Use Zanedickens suggestion of CF7-DTX
Just add this to your form and it will solve your problem.
[dynamichidden your-subject “Airport booking query”]
Then you can set “Subject” to “[your-subject]”
Hope that helps,
Tim