Plugin - Flex SMTP
Send WordPress mail through SMTP or a provider HTTP API, with a test send and a searchable delivery log.
- SMTP
- wp_mail
What it does
The mail layer for the FLEX suite — Flex Forms and anything using wp_mail() can leave credentials out of form settings.
HTTP API sending uses wp_remote_post only; no vendor SDKs and no telemetry.
Features
- Presets for Gmail, Microsoft 365, SendGrid, Mailgun, Amazon SES, and more
- SMTP or HTTP API for transactional providers
- From name / email and optional Force From
- One-click test email
- Searchable delivery log with retention
Get it
Flex SMTP is free on WordPress.org under GPLv2 or later. Install from Plugins → Add New, or download the package from https://wordpress.org/plugins/flex-smtp/.