Reliable WordPress email delivery with multiple providers, two connections, Return Path, Reply-To and visual AND/OR routing.
Alternatives to S/MIME Email Signing
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Email Essentialsv6.0.10
A plugin to make WordPress outgoing emails better and less likely to be marked as spam.
Send WordPress emails through Ncloud Cloud Outbound Mailer API.
Send all WordPress emails through SendByte SMTP with logging, test email, sandbox mode, delivery dashboard, and connection health check.
TSP Scale Mailerv1.0.5
The official TSP Scale WordPress plugin. Route all WordPress emails through your ultra-fast REST API, bypassing restrictive host firewalls.
Send all WordPress emails through JetEmail's reliable transactional email service with email logging & resend capability.
SMTP.comv1.1.0
SMTP.com is a powerful and reliable SMTP delivery service that enables you to send and track high volume emails effortlessly.
ZetaLine Site Notifications for MAX sends your WordPress emails, form submissions, new posts and WooCommerce events to the MAX messenger.
Vigilo Monitorv1.0.0
Lightweight site-health monitoring for freelancers and agencies: disk usage, PHP fatal errors, and SSL expiry, with email alerts.
Thanks Mail for Stripev1.2.1
Automatically send thank-you emails when Stripe Payment Links purchases are completed. Supports Japanese and English with customizable templates.