Email Feedback Loops (ARF): How to Keep Complaint Rates Low
How email feedback loops and ARF complaint reports work, how to measure complaint rate correctly, and practical ways to keep it under Gmail's 0.1% target.
5 min read
Pidgely is a developer email API that runs its own MTA. Here is why we built it, what already works today, and what comes after email.
Pidgely teamPublished 2 min readMarkdown version

Pidgely is an email API for developers that delivers mail with its own MTA. You call a REST API that accepts the same send format as Resend. Pidgely signs, queues and delivers the message itself, and reports what happened through signed webhooks.
Most email APIs are a nice interface on top of somebody else's sending infrastructure. That works until you need to know why a message was deferred, which IP it left from, or what happens when a neighbour on the same platform starts sending spam. The answers are usually out of your reach.
We wanted an API that is just as pleasant to use, with a delivery path we fully control and can explain.
Idempotency-Key for safe retries.Pidgely is one Go binary plus Postgres. Postgres also acts as the queue and stores rate limits and quotas, so there is no separate broker or cache to run. Fewer moving parts mean lower costs and fewer 3 a.m. surprises.
Email ships first because it is the hardest channel to get right. SMS, WhatsApp and push are planned, and they will share the same API keys and webhooks.
If you want to try Pidgely, ask for early access.
Pidgely is a multi-tenant messaging API for developers. It starts with email, sends through its own MTA and accepts the same send request format as Resend.
No. Pidgely runs its own mail transfer agent with its own IP pools. The optional SMTP fallback goes to a second Pidgely-run node.
Pidgely is in early access. Email us to join, and we will reply with next steps. Pricing will be published before general availability.
Pidgely team
Published
We build Pidgely, the email API that gets you to the inbox. We write about what we learn delivering email, citing the standards and mailbox provider guidelines behind every claim.
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