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The WordPress Email Authority

FREE expert advice on setup, maintenance, and troubleshooting

Your WordPress email problems solved

Welcome to nanoPost, or, as we’d like to think of ourselves, The WordPress Email Authority. Our mission is to help you solve your WordPress email problems, whether it’s setting up, maintaining, or troubleshooting. Our expert guides, Q&A, reviews, and news on WordPress SMTP, contact forms, and more are here to provide you make the best choices.

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    Recently Updated

    • Email service webhooks in WordPress: events, verification, retries

      How ESP delivery-status webhooks work in WordPress: what Postmark, Mailgun, SendGrid, SES and Mailjet send, how to receive them, and how to verify them.

    • Free SMTP Servers for WordPress

      SMTP providers with a $0 entry point that work for WordPress transactional email. What each free tier actually includes, and which ones are worth it.

    • Mailchimp Transactional Email (formerly Mandrill) as a WordPress SMTP server

      Mailchimp Transactional Email routes WordPress mail through Mandrill’s infrastructure via SMTP or API – but requires a Standard plan ($20/month) before you buy a single email block.

    • Amazon SES as a WordPress SMTP Server

      Amazon SES sends email at $0.10 per thousand – the cheapest in this category. The trade-off: IAM credentials, sandbox restrictions, no permanent free tier.

    • Transactional email and WordPress

      How transactional email works in WordPress, how it differs from marketing email, and what WordPress core and WooCommerce send by default.

    • WordPress.com vs WordPress.org Email: Who Owns the Sending Pipeline

      On WordPress.com, Automattic owns the sending pipeline and domain. On WordPress.org, the operator does. Every email behaviour difference follows from that.

    • SMTP2GO plugin review

      SMTP2GO’s "Email Made Easy" plugin connects WordPress to the SMTP2GO service for transactional emails, marketing campaigns, and contact forms. The plugin connects to the SMTP2GO service via API, a key for which can be generated in the SMTP2GO account, requiring no additional configuration beyond the key. It replaces the default WordPress email system, ensuring reliable…

    • WordPress plugin “Mail Queue” review

      Email queues are especially beneficial for websites that send a high volume of emails, as they significantly boost performance and ensure reliable email delivery. For more on the advantages of email queues and how they work in WordPress, see our guide: Understanding email queues in WordPress: Enhance performance and deliverability. Mail Queue By WDM is…

    • WordPress plugin “GD Mail Queue” review

      Email queues are especially beneficial for websites that send a high volume of emails, as they significantly boost performance and ensure reliable email delivery. For more on the advantages of email queues and how they work in WordPress, see our guide: Understanding email queues in WordPress: Enhance performance and deliverability. GD Mail Queue is a…

    • “WP Test Email” plugin review

      Are you looking to test if your WordPress installation can send emails? Look no further than the "WP Test Email" plugin. This tiny, user-friendly plugin allows you to check your WordPress email functionality quickly and easily. Installation and Configuration Installing and configuring the WP Test Email plugin is a breeze. Simply follow these steps: A…

    • WordPress plugin “Disable Emails”

      Disable Emails by WebAware stops a WordPress site from sending any email – password resets, admin notifications, plugin alerts, all of it. From the same team behind "Log Emails," the plugin targets: The plugin replaces the standard WordPress wp_mail() function with a function that sends no emails, while still supporting the standard WordPress filter and…

    • The SMTP Field Manual

      https://smtpfieldmanual.com/ The SMTP Field Manual is a website that houses a “collection of raw SMTP error code responses from major email service providers and spam filter services”. It cross-references SMTP error codes against major mailbox providers – Apple, Google, Outlook, Yahoo, Yandex, and others – documenting where each provider uses standard codes in non-standard ways.…