FluentSMTP

FluentSMTP is a powerful and free WordPress plugin that serves website owners, developers, and businesses by ensuring reliable email delivery. It integrates with over 10 major SMTP providers like Gmail, Amazon SES, SendGrid, Mailgun, and more, using API or OAuth for secure, encrypted connections.

FluentSMTP offers premium-grade features at no cost: automatic fallback connections, smart routing for transactional and marketing emails, detailed logs, and instant failure notifications via email, Telegram, Slack, or Discord. It also includes testing tools, migration wizards, and a reporting dashboard, all designed to maximize deliverability and reduce setup complexity.