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Is your business on a spam list?

There are lists of senders that email companies don't trust. If your business ends up on one, your email can be blocked almost everywhere.

Updated · senderframework.com

Signs this is happening to you

  • Bounce notes that mention a list or a block.
  • Email to many different companies stops at once.
  • A website or tool tells you your name is "listed".
  • Your email was fine yesterday and blocked today.

How does a good business end up on a spam list?

You don't have to send spam to get listed. A hacked mailbox, a shared service used by someone else, or a scammer sending fakes in your name can all land you on a list.

No one tells you when it happens. You find out when email stops getting through.

Isn't checking once enough?

Lists change by the hour. A check you ran last month says nothing about today. And a list that couldn't be reached is not a clean result, even if a quick check shows it as one.

What we find that others miss

These are small things. Each one is enough to send your email to spam, or let a fake through.

Is any of this hiding in your email? Find out today.

Why senderframework.com

A spam list can shut you out of inboxes overnight.

We check the lists that matter every hour, so if your name turns up, you won't be the last to know.

senderframework.com was built by people who have spent years in the email business, fixing problems just like this one for businesses just like yours. We have seen every way business email goes wrong. Email is all we do, and we do it every single day.

  • We watch your email every day, and the spam lists every hour. You will never have to wonder again.
  • If we can't check something, we tell you. We never scare you over nothing.
  • When something breaks, you hear it from us first, not from a customer.
  • Plain words, not codes. What's wrong, how much it matters, and what to do about it.

Not ready yet? See where your email stands in seconds, free:

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Build 91 · d8c4753 · 2 Nov 2026, 13:17 UTC