https://nextmail.sh/blog Guides from the Nextmail team on deliverability, domains, sending and the inbox, with the sources behind every claim. en Sat, 31 Oct 2026 00:00:00 GMT https://nextmail.sh/blog/best-ai-email-client-2026 https://nextmail.sh/blog/best-ai-email-client-2026 Sat, 31 Oct 2026 00:00:00 GMT Benjamin AI Email clients Comparisons Eight AI email clients compared on what their AI does, the mail they work with and the price in 2026, from Nextmail and Superhuman to Gmail and Outlook. https://nextmail.sh/blog/build-your-own-email-client https://nextmail.sh/blog/build-your-own-email-client Sat, 31 Oct 2026 00:00:00 GMT Arta Developers Email API Email clients What you need to build your own email client on Nextmail: OAuth sign-in for your users, typed SDKs in seven languages, live events, webhooks and raw messages. https://nextmail.sh/blog/email-as-a-mailbox https://nextmail.sh/blog/email-as-a-mailbox Sat, 31 Oct 2026 00:00:00 GMT Benjamin AI Developers Email API Most email APIs only send. What a real mailbox adds for apps and AI agents, the four ways to get one in 2026, and how much code each leaves you. https://nextmail.sh/blog/resend-pricing https://nextmail.sh/blog/resend-pricing Sat, 31 Oct 2026 00:00:00 GMT Benjamin Comparisons Email API Developers What Resend costs at 50,000 to 1,000,000 emails a month, with every plan, overage rate and add-on, and what the same mail costs on Nextmail. https://nextmail.sh/blog/spf-dkim-dmarc-explained https://nextmail.sh/blog/spf-dkim-dmarc-explained Sat, 31 Oct 2026 00:00:00 GMT Benjamin Deliverability DNS Email authentication What SPF, DKIM and DMARC each check, why alignment decides whether DMARC passes, and a safe order for moving a domain from p=none to p=reject. https://nextmail.sh/blog/what-is-an-email-client https://nextmail.sh/blog/what-is-an-email-client Sat, 31 Oct 2026 00:00:00 GMT Benjamin Email clients Protocols An email client is the app you read and send mail in, apart from the service that holds your mailbox. How clients find servers, sync, send and guard privacy. https://nextmail.sh/blog/what-is-bimi https://nextmail.sh/blog/what-is-bimi Sat, 31 Oct 2026 00:00:00 GMT Arta Deliverability Email authentication DNS BIMI is a DNS record that puts your logo beside mail that passes DMARC. How the record, the BIMI logo and VMC or CMC certificates work, inbox by inbox. https://nextmail.sh/blog/what-is-dkim https://nextmail.sh/blog/what-is-dkim Sat, 31 Oct 2026 00:00:00 GMT Benjamin Deliverability DNS Email authentication DKIM is a signature on every email that proves which domain vouches for it and that nothing changed on the way. How it works, tag by tag, and which keys to use. https://nextmail.sh/blog/what-is-dmarc https://nextmail.sh/blog/what-is-dmarc Sat, 31 Oct 2026 00:00:00 GMT Arta Deliverability DNS Email authentication DMARC is a DNS record that checks SPF and DKIM against your visible From domain, tells inboxes what to do with mail that fails and reports who sends as you. https://nextmail.sh/blog/what-is-imap https://nextmail.sh/blog/what-is-imap Sat, 31 Oct 2026 00:00:00 GMT Arta Protocols Email clients Developers IMAP is how mail apps read and organise mail that stays on the server, in sync on every device. How it works, which port to use and how it compares with POP3. https://nextmail.sh/blog/what-is-jmap https://nextmail.sh/blog/what-is-jmap Sat, 31 Oct 2026 00:00:00 GMT Arta Developers Protocols Email clients JMAP is the IETF standard for email, contacts and calendars over JSON and HTTPS. How it works, how it differs from IMAP, and who supports it in 2026. https://nextmail.sh/blog/what-is-smtp https://nextmail.sh/blog/what-is-smtp Sat, 31 Oct 2026 00:00:00 GMT Benjamin Protocols Deliverability Developers SMTP is the protocol that carries email from your app to your provider and between mail servers. How it works, which port to use and what each reply means. https://nextmail.sh/blog/what-is-spf https://nextmail.sh/blog/what-is-spf Sat, 31 Oct 2026 00:00:00 GMT Arta Deliverability DNS Email authentication SPF is the DNS record that lists the servers allowed to send mail for your domain. How receivers check it, what each part means and what quietly breaks it.