
Email deliverability plugins fix the classic WordPress problem: the site sends mail, but it lands in spam or vanishes entirely. They route WordPress emails through a proper SMTP provider or transactional API, set the correct authentication headers, and log every message so delivery problems become visible instead of silent.
The email deliverability category includes SMTP tools like WP Mail SMTP Pro, covering provider integrations, email logging, and deliverability controls for contact forms and store notifications. Browse the options and download them as a free GPL version.

WordPress sending email through PHP mail() is why password resets, order confirmations, and form notifications end…