发送

Most email providers have a dirty secret: they pool thousands of customers onto shared IP addresses. When one sender on that IP gets flagged for spam, the reputation hit affects everyone.您精心制作的交易电子邮件开始进入垃圾邮件文件夹，不是因为您所做的任何事情，而是因为您共享 IP 上的陌生人正在发送垃圾邮件。 SendGrid's shared IPs were blocked by Microsoft for 36 hours. About 17.5% of emails on shared infrastructure route to spam globally.

Transmit 就是为了解决这个问题而构建的。 Every customer gets their own isolated sending infrastructure.不是软件中的逻辑分离。云级别的真正隔离。 Your sending reputation is yours alone, and nobody else's behavior can affect your deliverability. The result: 99.2% inbox placement across all customers.

Transmit runs in two modes, and you can switch between them without changing a single line of code.

**Managed mode** is the fastest way to start sending. Sign up, add your domain, and you're live in under two minutes. Transmit 处理所有基础设施：专用发送环境、自动域预热（每天 1.5 倍指数增长，高跳出率时自动暂停）、一键式 DKIM、SPF 和 DMARC 设置，以及内置电子邮件验证，可在无效和一次性地址损害您的声誉之前将其阻止。计划起价为 2 美元/月，可容纳 3,000 封电子邮件。

**BYOK mode** (Bring Your Own Keys) is for teams that want full control. Connect your own AWS SES account and keep $0.10 per 1,000 email pricing. Transmit 添加了 SES 所缺少的一切：活动构建器、联系人管理、实时分析、自动预热、入站电子邮件路由和可搜索消息日志。您可以通过 IAM 角色假设（推荐，使用不存储机密的临时 STS 令牌）或访问密钥（静态加密的 AES-256-GCM，发送期间仅在内存中解密）进行连接。 At 1M emails per month, BYOK mode costs $249 total, compared to $650+ on other platforms.