--- title: "SMTP relay." canonical: "https://bird.com/email-api/features/smtp" --- # SMTP relay. Connect the software you already use to Bird’s email delivery. Keep your application’s SMTP integration, send over an encrypted connection, and track results in the dashboard or through MCP. [Read customer stories](/customers) [Explore Enterprise](/enterprise) - [Airwallex](/customers/airwallex) - [Glovo](/customers/glovo) - [Zillow](/customers/zillow) - Uber - [Binance](/customers/binance) - Adobe - Meta - PayPal - Pinterest - Square - [Al Jazeera](/customers/aljazeera) - [Aramex](/customers/aramex) - [Bazaar Technologies](/customers/bazaar) - [ComparaOnline](/customers/compara) - [Emma](/customers/emma) ## Check the setup. Then connect your app. Start with your sending identity. Ask Bird MCP to check the domain and its DNS records, then connect your application to the regional SMTP relay with an email-enabled API key. [Connect Bird MCP](/docs/ai/mcp-server) [Explore the Email API](/email-api) [SMTP configuration](/docs/guides/email/smtp) ## Change the connection. Keep the message. Add Bird’s host, port and credentials to your mail library or application. Keep your HTML and attachments. Set category, tracking and IP-pool defaults on the API key so each application sends with its own configuration. Use implicit TLS on port 465 or STARTTLS on 587 or 2525. Match the SMTP region to your API key. ## Your app sends it. Bird shows you what happened. SMTP messages appear in the same email log and reports as API sends. Keep the message ID from the queued response, then follow delivery, deferrals and bounces in Bird or through signed webhooks. [Email log](/docs/guides/email/email-log) [Delivery webhooks](/docs/guides/email/events) [Email analytics](/email-api/features/analytics) ## 你的域名。 你的信誉。 验证你的发送身份。随着发送量增长管理信誉。 [域名设置](/docs/guides/email/sending-domains)[DKIM、SPF 与 DMARC](/docs/guides/email/dkim-spf-dmarc)[专用 IP](/docs/guides/email/dedicated-ips-and-pools)[屏蔽管理](/docs/guides/email/suppressions) ## SMTP relay, explained. ### What credentials does Bird SMTP use? Use bird as the username and a regional API key with emails permission as the password. Connect to eu1.smtp.bird.com or us1.smtp.bird.com to match the key region. ### Which ports are supported? Use 465 for implicit TLS or 587 and 2525 for STARTTLS. Authentication requires encryption. Port 25 is not offered for submission. ### Can SMTP render a stored Bird template? SMTP takes content from the MIME message your application submits. Use the Email API when you want to send a stored template with structured parameters. ## 规模扩展， 不失控制。 在工作区中组织团队，控制 API 访问权限，并通过审计日志追踪变更。 [PowerMTA](/email-api/features/power-mta)[Momentum](/email-api/features/momentum)[工作区](/docs/guides/workspaces)[团队角色](/docs/guides/users-teams-roles)[API 身份验证](/docs/guides/authentication)[审计日志](/docs/knowledge-base/account-security/audit-log)[探索 Enterprise](/email-api/enterprise) ## 更进一步。 用邮件。 从首次发送到规模化投递，一应俱全。 - [事务性邮件](/email-api/features/transactional-email) — 发送收据、确认和通知。 - [邮件营销](/email-api/features/email-marketing) — 创建群发邮件、新闻通讯和促销活动。 - [邮件 API](/email-api) — 将邮件集成到你的应用或智能体中。 - [邮件自动化](/email-api/features/email-automation) — 将客户事件关联到相关消息。 - [邮件模板](/email-api/features/templates) — 创建可复用的个性化邮件。 - [联系人与受众](/email-api/features/audiences) — 管理联系人和维护受众。 - [SMTP 中继](/email-api/features/smtp) — 连接你现有的邮件技术栈。 - [入站邮件](/email-api/features/inbound) — 接收回复和附件。 - [邮件送达率](/email-api/features/deliverability) — 验证发件人身份并管理信誉。 - [邮件分析](/email-api/features/analytics) — 跟踪投递、互动和失败情况。 - [Inbox Insights](/email-api/features/inbox-insights) — 监测收件箱到达率并运行种子测试。 - [Competitive Insights](/email-api/features/competitive-insights) — 探索竞争对手的邮件活动和发送模式。 [邮件快速入门](/email-api/getting-started)[邮件定价](/pricing/email)[服务商对比](/email-api/compare)[邮件常见问题](/email-api/faqs)[邮件资源库](/email-api/resources) ## 从一个渠道开始。 跨渠道扩展。 将下一次客户对话接入同一个工作区。 - [Email](/email-api) — 发送、接收和追踪邮件。 - [SMS](/sms-api) — 发送更新，保持回复连贯。 - [WhatsApp](/whatsapp-api) — 富消息与实时对话。 - [Apple Messages](/apple-messages-api) — 在 Messages 中帮助客户。 - [Voice](/voice-api) — 接通电话，引导对话。 - [Verify](/verify-api) — 通过验证码确认访问权限。 - [Lookup](/lookup-api) — 发送前核实联系方式。 - [Mailbox](/mailbox-api) — 为你的应用提供收件箱。 - [eSIM](/esim-api) — 将移动连接能力集成到你的产品中。 - [Realtime](/realtime-api) — 保持应用实时同步。 ## 你的下一个创意。 随时连接。 [开始使用](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Femail)[联系销售](/demo?product=smtp)