nanoPost

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.

Have a WordPress email problem right now? Ask us about it.

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    • WP Engine

      WP Engine sends default WordPress mail through MailChannels with an undisclosed hourly cap. No mailboxes. Port 25 blocked; 465/587/2525 open.

    • Kinsta

      Kinsta sends WordPress mail through MailChannels with auto-signed DKIM. No bundled mailboxes. Port 25 blocked; 465/587/2525 open. Daily caps 150-3,000.

    • Bluehost

      Bluehost includes domain email on all WordPress plans. Default wp_mail uses PHP mail(), unsigned. Sending limit is 500 emails/hour per domain. SMTP ports open.

    • Cloudflare Email Routing

      Cloudflare Email Routing forwards inbound mail for free on any domain on Cloudflare DNS, with the same authentication stack (SRS, ARC, DKIM) as paid services.

    • MailPoet as a WordPress SMTP Server

      MailPoet is a WordPress newsletter platform (500K+ installs, by Automattic) with its own sending service. Use it for email marketing, not as a standalone SMTP relay.

    • SiteGround

      SiteGround bundles full domain email and signs WordPress mail with an auto-published DKIM. Hourly caps: 400 (entry plans), 800 (GoGeek and Cloud).

    • WordPress hosts where wp_mail works without a plugin

      Seven WordPress hosts route wp_mail through a signed relay by default. Password resets land without a mailer plugin. Which to pick, when, and why.

    • WPX Hosting

      WPX Hosting is an independent managed WordPress host, co-founded by Terry Kyle and Georgi Petrov in December 2013. Approximately 110 employees. WPX has a strong community reputation (3,000+ five-star Trustpilot reviews). All plans include email hosting: unlimited email accounts at the domain, with SMTP access (port 465 SSL recommended). WordPress email works out of the…

    • Presslabs

      Presslabs (Kubernetes-based managed WordPress) provides no bundled email. Transactional wp_mail() routes through a preconfigured relay; no email hosting.

    • Pressable

      Pressable’s built-in relay sends WordPress mail without a plugin; 200 emails/hour and 4 unique sender addresses per 24 hours. No bundled mailboxes. Titan add-on at $3.50/inbox/month.

    • Pantheon

      Pantheon is a WebOps platform for WordPress and Drupal, backed by SoftBank (Series E, $100M in 2021). It has the most restrictive email posture of any major WordPress host: no email service, no reliable PHP mail(), SMTP ports discouraged due to dynamic outgoing IPs with no PTR records. Email on Pantheon requires a third-party provider…

    • Pagely

      Pagely (GoDaddy-owned enterprise managed WordPress) provides no bundled email. MailChannels handles transactional wp_mail() by default; no sending limit published.