Tracking

Complaint Handling

A spam complaint from the recipient's mailbox provider suppresses the address immediately, logs the feedback type, and counts toward a complaint-rate check — above 0.1% in 24 hours, sending pauses automatically.

Start free Tracking overview

Proactive Complaint Management

Feedback loops via the provider

Complaints arrive as provider notifications whose signature PostFrame verifies before acting

Auto-suppression on complaint

Recipients who complain are immediately suppressed — no second chances to annoy

Complaint-rate monitor

The rate over the last 24 hours is checked against a threshold — 0.1% by default, configurable per workspace — and sending pauses when it is crossed

Tags on every event

Complaint events carry the email's tags, so you can see which kind of send drew them

Complaint Thresholds

Below 0.1% — Healthy

Sending continues; the rate is visible on your dashboard

0.1% — default pause threshold

Sending pauses automatically; the check re-runs and lifts the pause when the rate recovers

Configurable

Set your own threshold per workspace if your traffic warrants it

Per-provider breakdown

The Providers report shows rates by SES, Postmark, Mailgun and every other connected provider

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Bounce detection

Hard and soft bounces, and the three-in-seven rule.

Open Bounce detection

email.complained webhook

Feedback type and provider in the payload.

Open email.complained webhook

Separate suppression lists

Review, add or remove entries per workspace.

Open Separate suppression lists

Questions

Common questions, straight answers.

What happens the moment someone marks my email as spam?

The provider's complaint notification is verified, the address is added to your suppression list with the reason "complaint", the feedback type is logged, and email.complained fires to your webhooks.

What is the complaint-rate pause?

PostFrame checks complaints over the last 24 hours against a threshold — 0.1% by default, adjustable per workspace. Above it, sending pauses until the rate recovers.

Can I see which sends caused complaints?

Every event carries the email's tags, and the Providers and Events reports break complaints down, so tag your sends and the pattern is visible.

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