Free WordPress email tools: SPF, DKIM, DMARC, and more.

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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.

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    Recently Updated

    • Mailgun as a WordPress SMTP Server

      Mailgun is mature developer-focused email infrastructure. HTTP API and SMTP relay, permanent free tier of 100 emails/day, inbound routing, email validation, and granular event webhooks. Fits high-volume, developer-led projects and agencies running per-domain sending reputation.

    • Kinsta

      Kinsta sends WordPress mail through MailChannels with auto-DKIM, but not DMARC-aligned. No bundled mailboxes. Port 25 blocked; 465/587/2525 open.

    • DreamHost

      DreamHost bundles email with DreamPress; shared plans charge $1.99/mailbox/month after 3 months. PHP mail() unsigned; port 25 blocked. 100 recipients/hour cap.

    • Bluehost

      Bluehost includes domain email on all WordPress plans. Default wp_mail uses PHP mail(), unsigned. Sending limit is 200 emails/hour per domain. SMTP ports open.

    • Postmark as a WordPress SMTP Server

      Postmark review, for WordPress: pricing from $15/mo for 10,000, stream separation, WP Mail SMTP setup. The right transactional default.

    • InMotion Hosting

      InMotion Hosting (Launch/Power/Pro, all unlimited mailboxes) routes outbound through MailChannels since Dec 2024. 250/hour per domain; SMTP open.

    • Hostinger

      Hostinger bundles up to 100 free mailboxes per domain. Default wp_mail uses PHP mail() unsigned. Standard SMTP ports open. Mailbox cap is 100/day per account.

    • Flywheel

      Flywheel routes wp_mail through SendGrid without a plugin. Daily sending limits are undisclosed. Port 25 blocked; 465 and 587 open. No bundled mailboxes or forwarding.

    • FastComet

      FastComet (WHG-owned since April 2025) tiers mailboxes 5/25/Unlimited/Unlimited and runs outbound through SpamExperts. SMTP open; no published sending limit.

    • A2 Hosting (now Hosting.com)

      Hosting.com (formerly A2) caps shared mailboxes at 5/10/20/40 by plan and sending at 100 messages/hour per domain. External SMTP is allowed; local mail relays via MailChannels.

    • 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

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