It should not. Nothing here replaces wp_mail() — every plugin on the site keeps calling the same function, and this configures the mailer that function already uses. There is no second code path.
If you run another SMTP plugin as well, switch one of them off. Two plugins both configuring the same mailer is the one situation where the result depends on which loads last.
Still stuck? Ask the developers who wrote it. We aim to reply within one business day.
Email Delivery
Send your site's email through a real mail service, and see what happened to every message.
From $19 a year · every feature · 30-day refund
![The Send a test screen of Email Delivery in WordPress admin. A red box reads It did not go. SMTP Error: Could not authenticate. Below, a panel headed What the mail server said, noting it is safe to paste into a support request, shows the full conversation with smtp.sendgrid.net, the sign-in lines replaced by [credentials hidden], ending in 535 Authentication failed: The provided authorization grant is invalid, expired, or revoked.](https://www.traslatability.com/wp-content/themes/traslatability/assets/screens/email-delivery-by-traslatability/01-test-transcript.webp?ver=1792684944)