FluentSMTP
Free WP Mail SMTP plugin. Fix WordPress email deliverability with Gmail, Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, Brevo or any SMTP.
The pitch, and what the numbers say
FluentSMTP – WP Mail SMTP Plugin with Amazon SES, SendGrid, Mailgun, Postmark, Cloudflare, toSend, Gmail and Any SMTP — Email marketing · https://fluentsmtp.com/
No revenue figure: see why on the full x-ray.
Why users leave
The free diagnosis shows the top complaint. The full brief has every cluster, the build ideas and the buyers.
Emails fail to send/receive; Office 365 and test sends blocked; SendGrid keys lost; staging reauth; PHP 8 gaps.
“It doesn’t send or receive any emails.”
What a challenger would build
Closest alternatives
Who is buying right now
1 buyer thread in the same market in the last 30 days, with links and excerpts in the full brief.
Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.
How to read this
Sources: the product's public listing and reviews, its published price, and public forum threads. Revenue is an estimate unless marked verified by the founder; the formula and its inputs are on the full x-ray. Complaints are grouped by a language model and each quote is a verbatim excerpt, linked to the original review. Build difficulty is a model's reading of the listing and the complaints, not a measurement. Figures are a snapshot of Oct 30, 2026. Corrections: corrections.