SendSend Mailer

By default WordPress sends email from your web server. Those messages carry no signature of your own, so they often land in spam or never arrive. SendSend Mailer sends them through the SendSend email API instead, from your own verified domain.

Anything that calls wp_mail() is covered: WordPress itself, WooCommerce, Contact Form 7, Gravity Forms, WPForms and most other plugins.

• Works with any plugin that uses wp_mail()
• From address and name set once, with the option to force them
• Reply-To is kept when a form plugin sets the visitor as the sender
• Safe retries: a retried send can never deliver twice
• Test email button and a log of recent sends
• API key can live in wp-config.php instead of the database
• Attachments: up to 10 files and 10 MB in total. Executables and scripts (.exe, .js and similar) are refused by SendSend.

You need a free SendSend account at sendsend.email, a verified sending domain, and an API key. SendSend also has a free tool to check your SPF, DKIM and DMARC records: sendsend.email/tools/domain-check.

External services

This plugin sends your site’s email through the SendSend API, a third-party service. It is the purpose of the plugin and it does nothing until you add an API key.

When WordPress sends an email, the plugin sends this to https://api.sendsend.email/v1/emails: the recipients, sender, subject, message body (text and HTML), reply-to address and any attachments, plus a tag saying the message came from WordPress, and your API key for authentication. The request is sent each time your site sends an email.

The service is provided by SendSend. Terms of service and privacy policy.

Developer hooks

• sendsend_mailer_payload (filter): change the request body before it is sent. Receives the body and the original wp_mail() arguments.