We read the data from your sequencer to show domains that are burning.
Most last 2 to 12 months, depending on your provider.
A burning domain reads like a healthy one in your sequencer, until it stops working.
Rotate everything and you replace domains that are still working. Rotate nothing and your emails keep landing in spam.
The Domain Burn Board helps you understand what is really happening.
We read your real sends, replies, bounce rates and types, and warmup health from SmartLead or Instantly. Every number matches your own sequencer, so you can check it yourself.
The domains in one campaign run the same offer, with leads split between them at random. That makes them identical in every way but one: the domain itself. So when one domain underperforms, it isn’t your list or your copy. It’s the domain. The more domains in the campaign, the clearer the read.
Five domains land together on the line the rest set. One trails it. Same list, same copy, same offer, so the gap belongs to send-04 alone.
One domain on its own tells you nothing. Put it next to the others running the same campaign, and the truth shows up. A seed test can never do that.
You see the reasoning behind every call, including what the data can’t tell us. We built it by watching real domains go quiet over time. A verdict that hides what it can’t see is just a guess with a number on it.
The quiet discipline behind years of managed deliverability, now open to you.
“Our reply rates went from under 1% to over 4%.”
After switching, inbox placement improved immediately. They now book 2 to 3 meetings a day over email instead of making 50 to 100 calls.
“We have the highest number of accounts with Aerosend.”
Grayson tested Aerosend against nearly every provider in the market. We are now his biggest vendor, generating hundreds of positive replies a week.
“Aerosend just works.”
Reaching a tough audience (Outlook and larger enterprise companies), Aerosend gets them to the inbox seamlessly.
“The kind of support you won't get from any other provider.”
Across 250+ inboxes, an identical controlled test had one provider drop to about 60% placement. Aerosend stayed between 95 and 99%.
“You need a sending vendor that's on your side.”
Alchemail 4x'd their replies with Aerosend. The campaign they ran ended up being one of their best.
“Reply rate went from 1.31% to 2.75% with Aerosend.”
Same copy. Similar lead list. Their reply rate doubled.
“No mailboxes ever went down.”
Same stack as before, only the sending changed. Their deliverability is now at an all-time high.
“Give it a try, it's super straightforward.”
One Chile campaign turned 178 leads into 14 qualified opportunities and 3 closed deals.
“After trying 10 providers, I tried Aerosend.”
Now Sparklead's number one choice. They stopped worrying about deliverability and focus on booking meetings for clients.
Yes. Free forever, no card. It is free because some boards come back with a burn, and fixing that is what Aerosend sells. No hidden catch, a stated one.
We only read. We never send an email, never touch a campaign, never change a setting. Disconnect any time and we stop reading. SmartLead and Instantly keys are account-wide, which is exactly why we spell out what we do with them instead of calling the key read-only.
SmartLead and Instantly today, with more on the way soon.
Your first board is ready in about five minutes and reads your recent sending history, so a domain that burned weeks ago shows up on day one. After that, verdicts update monthly, because a call needs a month of sends behind it.
We use it to compute your verdicts. Nothing else. We do not resell it and we do not contact your leads.
No. The check stands on its own and stays free.
Already know you've got burnt domains? Aerosend can replace them for you.
Free burnt-domain detection for SmartLead & Instantly
Generate domain ideas for cold email
Check your inbox placement score
Validate your email authentication
Check if your domain or IP is blacklisted
Test if your email lands in spam
Click on your profile icon in the bottom-left corner, then select “Settings” from the dropdown menu.
In the Integrations page, click on the “API Keys” tab in the left sidebar.
If you already have an API key with the all:read scope, you can use that key.
If not, click the “Create API Key” button, select the all:read scope, and make sure to save your new API key somewhere safe.
Click on the “Settings” option in the top right corner profile icon.
In the Settings page, under your profile picture, you can see the SmartLead API Key.
If you already have an API key displayed, you can use that key. If not, click the “Generate API Key” button to create a new one.
