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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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Recent Q&A’s
Recently Updated
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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.
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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.
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Elastic Email as a WordPress SMTP server
Elastic Email’s transactional API starts at $19/month for 50,000 emails. A free Pilot plan exists (SMTP and API access, undisclosed sending limits). Competitive at volume but overpriced below 30K sends/month for WordPress.
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Bird (formerly MessageBird, formerly SparkPost) as a WordPress SMTP server
SparkPost was acquired by MessageBird (now Bird) in 2022. The official WordPress plugin was closed in March 2025. No longer available as a self-service product.
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WordPress Email Queues: When You Need One and When You Don’t
wp_mail() sends email synchronously – every call blocks the PHP process until SMTP completes. A queue decouples sending from the page request. Here’s when that matters.
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Best WordPress SMTP plugins: WP Mail SMTP vs FluentSMTP vs Post SMTP
WP Mail SMTP, FluentSMTP, and Post SMTP compared by use case. Free vs paid feature splits, where each plugin is the wrong choice, and the also-rans.
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WP Mail SMTP Review
The most-installed WordPress mailer plugin (4M+ sites). Broad mailer support and a setup wizard that works. Email logging requires the Pro plan ($99/year on renewal).
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Brevo (Sendinblue) as a WordPress SMTP Server
Brevo’s free tier sends 300 emails/day from WordPress via SMTP or API. A marketing platform that also handles transactional email – good fit for some sites, more platform than others need.
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Free SMTP Servers for WordPress
SMTP providers with a free tier that works for WordPress transactional email – what each includes, where the limits are, and which ones are worth configuring.
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SMTP Mailer (by naa986) review
SMTP Mailer review — a minimal, free WordPress mailer plugin with a unique feature, full SMTP session capture for debugging delivery failures.
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Mandrill (now Mailchimp Transactional Email) mailer plugin review
Introduction Send Emails with Mandrill by Miller Media is a forked version of the now unsupported wpMandrill plugin, created by Matt Miller. It uses Mandrill (now Mailchimp Transactional Email, MTE) API to send outgoing emails, with or without attachments, from your WordPress installation. This plugin replaces the wp_mail function included with WordPress. Features and Functionality…
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WP Offload SES (by Delicious Brains) review
Offload your WordPress email with WP Offload SES Lite, a WordPress plugin by Delicious Brains. Harness Amazon SES, automatic bounce handling, and advanced email throttling for improved email management.