MailAI

Mailai Contact Form was built for founders and business owners who need a reliable way to receive leads without the bloat of traditional form builders. By allowing you to Bring Your Own SMTP, this plugin bypasses the often-unreliable native WordPress mail function and connects directly to your preferred provider (Amazon SES, Google Workspace, SendGrid, or private mail servers).
Built with a performance-first mindset, the form uses Modern Vanilla JavaScript (AJAX) to submit data without refreshing the page, providing a seamless experience for your users.
Key Features: 
* BYO SMTP: Total control over your email infrastructure. 
* Zero Bloat: No heavy CSS libraries or tracking scripts. 
* AJAX Submission: Fast, no-refresh form processing. 
* Security Focused: Uses WordPress Nonces and strict sanitization to protect your site. 
* SaaS Ready: Designed to work perfectly with modern business environments.

Mailai Contact Form

A professional-grade, lightweight contact form that allows you to bring your own SMTP to ensure 100% email deliverability.

benistauss

Adds the possibility to send all WordPress emails via SMTP. SMTP sending can be configured discreetly in the general settings. 
In general, this plugin fits into WordPress almost invisibly and without any advertising. 
In addition, errors in the Phpmailer are integrated into the debugging of WordPress.

SMTP Email Mod by Webwerkstatt Stauß

Adds the possibility to send all WordPress emails via SMTP.

Mailai Contact Form vs SMTP Email Mod by Webwerkstatt Stauß