Outbox NewsIndependent news on email APIs: Resend, Postmark, SendGrid, Mailgun, Amazon SES, AgentMail, Nylas and the rest of the email stack.https://outboxnews.com/AgentMail Agents Can Now Sign Themselves Up but Can't Send Alonehttps://outboxnews.com/agentmail-agent-signup-without-human-2026/https://outboxnews.com/agentmail-agent-signup-without-human-2026/AgentMail now lets AI agents sign up with no human email and get a receive-only inbox. Five breaking changes shipped in the same two weeks.Sat, 03 Oct 2026 00:00:00 GMTAzure Email Retires in 2028 With No Microsoft Option for Customer Mailhttps://outboxnews.com/azure-communication-services-email-retirement-2026/https://outboxnews.com/azure-communication-services-email-retirement-2026/Microsoft will retire Azure Communication Services Email on Sept. 30, 2028. Its in-house alternative can't send to customers outside a tenant.Fri, 02 Oct 2026 00:00:00 GMTCloudflare Stops One Domain's Bounces From Blocking a Whole Accounthttps://outboxnews.com/cloudflare-email-suppressions-sending-domain-2026/https://outboxnews.com/cloudflare-email-suppressions-sending-domain-2026/Cloudflare Email Service now ties bounce and complaint suppressions to the sending domain that caused them instead of the whole account.Fri, 02 Oct 2026 00:00:00 GMTZeptoMail Becomes Zoho CPaaS as Texting and Voice Join Emailhttps://outboxnews.com/zoho-cpaas-zeptomail-rename-2026/https://outboxnews.com/zoho-cpaas-zeptomail-rename-2026/Zoho renamed its ZeptoMail transactional email service Zoho CPaaS and added SMS, WhatsApp and voice. Existing email setups keep working unchanged.Thu, 01 Oct 2026 00:00:00 GMT