What information do I need to provide for a delisting request?

You've found the listing, you've figured out what went wrong, and now you need to write the actual delisting request. What you include in that message matters more than most people expect. Blocklist operators see hundreds of requests, and a vague or defensive one goes straight to the bottom of the pile.

Here's what a strong request actually covers:

Who you are. Include the listed IP address or domain, your organization name, and a professional contact email that someone actually monitors. Using a personal Gmail account or a no-reply address signals that you're not taking this seriously. Use your business domain.

What happened. Be honest and specific. Knowing the actual cause before you write is non-negotiable. "We had a security incident" is too vague. "A compromised form on our site collected addresses that were used without consent between March 4 and March 11" is specific enough to take seriously. Include when you became aware, not just when the listing appeared.

What you fixed. This is where most weak requests fall apart. Don't just say you fixed it. Describe the exact steps taken and when you took them. For example, "We removed 4,200 unconfirmed addresses from our list on March 12, implemented double opt-in on March 13, and updated our authentication records on March 14." A timeline of actions shows you're not just clicking a button and hoping for the best.

How you'll prevent it recurring. Blocklist operators aren't just clearing your name today. They want to know you won't be back next month. Mention the process change, not just the technical fix. If you added double opt-in, say so. If you're now monitoring your complaint and bounce rates weekly, say that too.

Evidence where you have it. Bounce rate improvements, complaint rate drops, authentication records now passing, policy updates in writing. You don't need a formal report. A few concrete data points go a long way.

The tone of all this matters as much as the content. Don't argue, don't minimize, and don't imply the blocklist made a mistake. Accept responsibility clearly and move the conversation toward your solution. Operators respond better to "we caused this and here's how we fixed it" than to "our emails were falsely flagged."

And the most common reasons requests get rejected: no clear explanation of the root cause, fixes that sound theoretical rather than already done, and a defensive or dismissive tone. If your first request is denied, most blocklists will tell you why. Read that response carefully before trying again.

Not sure if your sending infrastructure looks clean enough to even submit? Our free Blocklist Checker shows you which lists you're currently on. And if you're navigating a more complicated situation, our SOS hotline is free, no pitch, just help.