Welcome email is not working

Hello there,

I have integrated Sendinblue with CF7 by follwing this artical.

I selected the checkbox of ‘Welcome email’ for my Subscribe form, however, it’s not working. The submitter cannot receive any ‘welcome email’ after submitting.

The Welcome email template I use is built in the Sendinblue email template, but it doesn’t send any welcome email to the submitter.

Would you please help me check out the issue? Thanks in advance!