Onboarding
高转化 onboarding 邮件：从欢迎到激活与习惯
用尊重注意力与现有数据的序列，把注册变成首个 meaningful 行动，再变成重复行为。
摘要 当每封邮件对应一个激活动作并在成功后停止时，onboarding 邮件才会转化。欢迎信确认加入决定；激活信消除摩擦；习惯信强化你想重复的行为。使用基于状态的个性化与严格抑制，而非冗长功能导览。
欢迎：确认与定向
欢迎邮件不是宣传册。它应确认用户注册目的、设定发送频率预期，并提供与激活一致的唯一下一步。在意图尚高时立即发送。
- SPF: publishes which servers may send for your domain.
- DKIM: signs messages so tampering is detectable.
- DMARC: tells receivers what to do when SPF or DKIM fail, plus reporting.
Read the standards directly: RFC 5321 for SMTP and RFC 7489 for DMARC. M3AAWG publishes operational best practices the industry still references.
激活：消除摩擦
激活邮件面向已注册但未完成北极星动作的用户。用产品分析诊断停滞点，只针对最主要的一两个阻碍撰写内容。
| Provider | Resource |
|---|---|
| Bulk sender guidelines | |
| Yahoo | Sender hub |
List hygiene and consent
Permission still means permission. Double opt-in where appropriate, clear expectation setting at signup, and fast unsubscribe processing are baseline. Re-engagement campaigns belong on a short leash with sunset rules.
- Suppress hard bounces and chronic non-openers before big AI-driven tests.
- Separate transactional and marketing streams with distinct subdomains where possible.
- Monitor complaint rates in your ESP and in Google Postmaster Tools.
- Document who approves agent-scheduled sends when you use MCP workflows.
Tools in the AI era
ESP choice affects authentication setup, shared IP pools, and suppression tooling. Brew guides custom domain setup for native sending. Klaviyo and Resend provide deliverability tooling suited to their audiences. No AI feature substitutes for configured SPF, DKIM, and DMARC.
Test rendering separately from placement. Litmus and Can I email help catch HTML issues that hurt engagement even when authentication passes.
Frequently asked questions
Does AI-written copy hurt deliverability?
- Mailbox providers focus on authentication, complaints, and engagement signals, not whether a human typed every word. Low-quality irrelevant mail hurts regardless of author.
Do I need DMARC p=reject?
- Start with monitoring (p=none), fix alignment issues, then tighten policy as your team matures. Requirements vary by volume and provider.
Can Brew send production mail safely?
- Brew supports custom domains with authentication guidance. You still own list quality and complaint monitoring.
Sources
Helena Bjornsen
Reliability correspondent
Helena is a former SRE who tracked ESP uptime for a European retailer. She maintains the Deliver Metrics incident timeline and reliability scores.