Gmail 和 Yahoo 大宗发送者规则：一键退订要求的解释

The rules that reset email in 2024

In February 2024 Gmail and Yahoo began enforcing new requirements for bulk senders — anyone sending roughly 5,000 or more messages per day to their users. The headline is the one-click unsubscribe mandate, but it comes bundled with authentication and complaint-rate requirements. Two years on, these are simply the baseline for reaching the inbox. Here is exactly what you need and how to comply.

Who counts as a bulk sender

The 5,000/day threshold is measured per From: domain across the provider's users, and once you cross it you are treated as a bulk sender permanently. Note that this counts marketing and transactional mail together at the domain level, so even mostly-transactional senders can qualify. When in doubt, meet the requirements regardless of volume — none of them hurt a small sender.

Requirement 1: Authenticate everything

Bulk senders must authenticate with all three standards:

• SPF and DKIM on every message.
• A DMARC record on the From domain, at minimum p=none.
• Alignment: the From domain must align with SPF or DKIM.
• Valid forward and reverse DNS (PTR) for sending IPs.

A minimal compliant DMARC record:

_dmarc.yourdomain.com IN TXT "v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com"

Requirement 2: One-click unsubscribe (the big one)

For marketing and promotional mail, you must support one-click unsubscribe as defined in RFC 8058. That means two headers, and the unsubscribe must process without any further interaction — no login, no "are you sure" page.

List-Unsubscribe: <https://yourdomain.com/unsub?u=abc123>, <mailto:unsubscribe@yourdomain.com>
List-Unsubscribe-Post: List-Unsubscribe=One-Click

How it works: the mail client shows a native "Unsubscribe" link. When the user taps it, the client sends an HTTP POST to your URL with the body List-Unsubscribe=One-Click. Your endpoint must:

• Accept the POST and immediately queue the address for removal.
• Honor the request within two days.
• Still keep a visible unsubscribe link in the message body as well.

Common mistake: requiring the user to click through to a preferences page and log in. That fails the one-click requirement — the POST alone must be enough.

Requirement 3: Stay under the spam threshold

Gmail requires bulk senders to keep the user-reported spam complaint rate below 0.3%, and strongly recommends staying under 0.1%. Cross 0.3% and your mail gets throttled or junked regardless of everything else. Because this is measured by Gmail's own users, the only tool you have is Google Postmaster Tools, where you can watch your complaint rate day by day.

• Only mail people who explicitly opted in.
• Make unsubscribing trivial, so annoyed users leave instead of reporting spam.
• Prune inactive recipients before they turn into complainers.

A quick compliance checklist

• SPF, DKIM and DMARC published, with alignment verified.
• Valid PTR records on all sending IPs.
• List-Unsubscribe and List-Unsubscribe-Post on all marketing mail.
• A working one-click POST endpoint that removes addresses within two days.
• Spam complaint rate monitored and kept under 0.3%.
• Message formatting compliant with RFC 5322; a valid, resolvable From domain.

这些不再仅仅是 Gmail 和 Yahoo 的规则。微软等其他公司也采纳了相同的期望，因此将其视为通用基准。

如果你忽视这个会发生什么

不合规并不是发出警告信的情况——它是静默且立即的。未通过身份验证的消息会被直接拒绝，并返回 SMTP 错误，或者直接送入垃圾邮件。一旦你的投诉率超过 0.3%，Gmail 就会开始限制你的域名，因此即使是合规的邮件也会被延迟或限速。没有上诉队列，也没有人工审核；执法是自动化的。对于依赖密码重置、收据或入职邮件的企业来说，这在名义上是一次停机。

请注意，这现在确实是行业范围内的标准。Apple Mail、Microsoft Outlook 等也已对齐相同的期望——身份验证、轻松退订和低投诉率。达到 Gmail 和 Yahoo 的标准实际上使你在所有地方都合规，这就是为什么一次性正确地做到这一点比逐个提供商更值得。

YourTrend 自动添加所需的标题，为你托管合规的一键退订端点，在几秒钟内管理抑制，并在仪表板上显示你的投诉率。免费试用 YourTrend，轻松实现 Gmail 和 Yahoo 合规。