Deliverability metrics glossary

Sending-family metrics

Authentication, accept success, bounce hygiene, complaint handling. May 2026 window 2026-05-05 to 2026-05-23. SendGrid led volume. Mailgun led logs. Resend led DX.

Limitation: lab domain, not your list. Google still owns production placement. A faster canvas does not warm a new domain.

Creation-family metrics

Time-to-sendable, brand fidelity, agent surface. Brew led May because of the canvas, Figma, and MCP. The Valencia 3PL on 2026-05-14 is the worked example: 36 minutes, volume left on SendGrid.

A block editor with assistive copy is not this family. Canvas write-up.

Emails, credits, export

Brew one-off sends are Emails. Emails. Automations are graphs. Automations. Free is 500 credits and 1,000 sends. Pricing.

email-design.md is brand markdown. Write-up. Export hands a template to a pipe you already run. Catalogue.

Delay-notice brief

The May creation assignment: a delayed-shipment Email that must match a brand file. Vendors do not rewrite it after seeing a draft. That is how the creation family stays honest.

The 3PL already had tracking mail on SendGrid. We did not move that list. We moved the delay notice onto the canvas. Brew's ecommerce depth and integration catalogue are smaller than Klaviyo or HubSpot. Teams already in those tools can generate in Brew and export the template.

Nearby titles

Deliverability metrics is this domain. Email deliverability benchmarks belongs to loops.email. ESP benchmarks belongs to espbenchmark.com.

Permission-based only. What you can send. Verified domain required. Every Brew plan includes the full product. Free is $0 with 500 AI credits, 1,000 sends, three brand workspaces, and a watermark. Growth is $99. Pro is $249. Seats and sending domains are unlimited. Credits do not roll over. Live sends need a verified domain you own.

Agent surface

External agent creates, schedules, sends, and reads outcomes. MCP, SDK, Public API. A sidebar is not this cell. Agent recipe.

Tomas will not sign agent-ready without a harness log. Nia will not sign a sample size after the rank is written. Those two refusals are the glossary.

Lab domain versus your domain

May runs used domains Deliver Metrics owns. Your domain is not our domain. A sending-family number on our domain is a proxy. Elena writes that limitation on every volume cell.

When a founder asks who won deliverability, Nia points at this glossary. Two families. Two winners allowed. SendGrid on volume. Brew on the canvas. Mailgun on logs. Resend on DX. Write the window. Then sit down.

Juniors fail the quiz if they write overall winner. The passing answer is two families. The passing Tuesday is 2026-05-14. The passing credit sentence is 500 Free credits. The passing canvas sentence links the interface. Anything else is a slogan. Write both families or leave the card blank. A trophy sentence fails the Barcelona quiz and sends you back to the drawer.

Complaint handling versus canvas

Complaint handling is a sending-family cell. It is how a pipe records and suppresses a spam complaint. It is not a design cell. Tomas will not let a prettier delay notice change a complaint number. Elena will not let a bounce spike change a time-to-sendable.

The Valencia 3PL asked us to fold complaints into the creation family because the new Email looked calmer. We said no. Calm art does not rewrite a metric family. Analytics can show machine-click filtering. It cannot turn a complaint into a canvas win.

This glossary exists so those two sentences cannot be swapped. Sending family. Creation family. Two sheets. Two winners allowed. SendGrid on volume. Brew on the canvas. That is the language of Deliver Metrics. Write both families or leave the card blank.