Guides
Practical deliverability fixes for every platform
Diagnose what’s broken, see why it’s broken, and fix it. Each guide is platform-specific — no generic advice that doesn’t map to your setup.
Fix WordPress wp_mail() going to spam: the complete diagnostic + fix guide
WordPress sends mail from [email protected] by default — an address that fails SPF, DKIM, and DMARC. Here's why your wp_mail() emails land in spam and how to fix it.
Read the guide →Shopify SMTP: why there is no SMTP setting, and how to send from your own domain
Shopify sends store emails itself and has no custom SMTP setting. Here’s how to authenticate your domain in Shopify, and when to send through the SecureSMTP API instead.
Read the guide →Squarespace email troubleshooting: why your form submissions aren't arriving
Form submitted. No email. Here’s how to check Squarespace’s notification settings and forward submissions through Zapier to SecureSMTP.
Read the guide →Webflow form delivery: why form notifications go missing, and how to fix it
Webflow forms collect submissions reliably; the notification emails are the weak spot. Here’s how to send them through an automation tool and SecureSMTP instead.
Read the guide →Wix contact form email not working: how to fix it
Wix contact form submitted but no email arrived? Wix has no SMTP setting, so here’s how to send notifications through Zapier, Make or Velo code instead.
Read the guide →Ghost email troubleshooting: when magic links and welcome emails miss
Ghost members not getting magic-link logins or welcome emails? Here’s how to send a self-hosted Ghost’s transactional email through SecureSMTP. Newsletters still need Mailgun.
Read the guide →Mailchimp Transactional (Mandrill) email problems: how to diagnose and fix them
Mailchimp Transactional rebrand of Mandrill is confusing, expensive, and shares IPs across customers. Here's why delivery fails and the simpler alternative.
Read the guide →Fluent Forms not sending email? Here's why, and how to fix it
Fluent Forms submissions arrive in the dashboard but the notification email never lands? It's a wp_mail() problem, not a Fluent Forms bug. Here's the real fix.
Read the guide →Forminator email setup: configure notifications that actually arrive
Forminator notification emails going to spam — or missing entirely? It's WordPress's wp_mail() problem, not Forminator. Here's the fix that works on any host.
Read the guide →WP Mail SMTP setup with SecureSMTP: the Other SMTP settings, step by step
Use the WP Mail SMTP plugin with SecureSMTP as your SMTP server. The exact Other SMTP settings, how to keep your key out of the database, how to test, and what to do when it fails.
Read the guide →More guides coming soon
We’re publishing one new guide per week — WordPress wp_mail troubleshooting, Wix email setup, Bubble notifications, custom HTML forms. Want one prioritized? Tell us which platform.