FluentSMTP is the most powerful SMTP plugin for WordPress. It comes with the highest number of email service integrations and features. Moreover, the configuration process is easy for most email service platforms because it supports API integration.

Currently, FluentSMTP supports Amazon SES, SendGrid, Mailgun, Sendinblue, PepiPost, SparkPost, and Elastic Mail integration via API, and you can connect Gmail/Google Workspace and Microsoft 365 via OAuth. FluentSMTP also supports Zoho and other email services using SMTP credentials.

FluentSMTP

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