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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

    • Bird (formerly MessageBird, formerly SparkPost) as a WordPress SMTP server

      SparkPost operates as Bird’s email product after the 2021 acquisition. Self-service Startup (from $15/mo for 50K) and Growth (from $80/mo for 100K) tiers; dedicated IP is a $24.95/mo add-on on Growth and above. The official WordPress plugin remains closed as of March 2025.

    • 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.

    • 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.

    • GreenGeeks

      GreenGeeks tiers sending limits by plan (100/300/500 per hour on Lite/Pro/Premium) and includes 50 mailboxes on Lite 25. SMTP open; no external-SMTP block.

    • InMotion Hosting

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

    • FastComet

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

    • 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.

    • 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.

    • Mailjet as a WordPress SMTP Server

      Mailjet’s free tier sends 6,000 emails/month from WordPress. Marketing and transactional email run on one account, with EU data centers. Fits sites already using Mailjet campaigns or wanting a single EU provider for both.

    • 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.

    • Mailgun for WordPress Review

      Mailgun’s official WordPress plugin routes wp_mail() through Mailgun’s API over HTTPS, bypassing host SMTP port blocks. Free plugin; Mailgun’s free plan caps sending at 100 emails a day.

    • Free SMTP Servers for WordPress

      Thirteen free SMTP options for WordPress, ranked by whether the $0 tier is actually permanent. Permanent free plans, trials, and testing sandboxes – separated.