AI email reply classifier: tag cold email replies and build a suppression file
In short: Paste replies or an Instantly or Smartlead export, get one tag per reply, and download the tagged CSV and a suppression file. Limit: AI output can be wrong or bland. Read every line before you send or import it.
An AI email reply classifier reads each reply to a cold email and gives it one tag: Interested, Not now, Not interested, Out of office, Wrong person, Unsubscribe or Bounce. This tool tags pasted replies or a CSV export, downloads a tagged CSV, and turns the Bounce and Unsubscribe rows into a suppression file. Free for 25 replies signed out and 200 signed in.
Replies tagged? Check the rest of the list before the next send.
Price: this tool is free. Checking a whole email list is from $9/mo, and the first 100 checks are free with Google, no card. Check your list free nowSee pricing
Free: up to 25 rows signed out, 200 signed in.
Sample result
Four replies become Interested, Out of office, Unsubscribe and Bounce, with a suppression file for the last two.
- Suppression file
- 2 rows
- Interested
- 1
- Out of office
- 1
What this means for you
A tag says what the reply says. It is not a lead score, so read the Interested rows yourself.
- Paste replies or a CSV export
- Seven tags, Needs review when unsure without AI
- Tagged CSV download
- Suppression file from bounces and unsubscribes
- Tags
- Suppress
- CSV
By SimpleVerifier Team · Last updated
How do I check the rest of my list after tagging replies?
- Tag the replies above and download the suppression file.
- Upload or paste it at /verify. Every address gets a live mailbox check, and the first 100 email checks are free with a Google sign-in, no card.
How do I classify cold email replies?
- Paste the replies with a line of three dashes between them, or upload a CSV export that has a reply or body column.
- Press the tag button. Each reply gets one of seven tags.
- Read the table, then download the tagged CSV. Without AI, replies no keyword fits are marked Needs review.
- Download the suppression file: every Bounce and Unsubscribe row that has an address. Add it to your sending tool so those people are not emailed again.
- Verify the rest of your list before the next send.
Example
- You enter
- Four pasted replies separated by
---:send over pricing please,I am out of the office until Monday,please remove me from your list, andDelivery has failed to these recipients. - You get
- With AI mode off, keyword rules tag them Interested, Out of office, Unsubscribe and Bounce. A suppression file lists the Unsubscribe and Bounce rows that contain an address.
- Limits
- Up to 25 replies signed out and 200 signed in, 600 characters of each reply used. A reply no keyword fits is marked Needs review.
What are the seven reply tags?
Interested means the person wants to talk or asks for details, pricing or a demo. Not now means the answer is later: timing, budget or a contract. Not interested is a clear no. Out of office is an automatic away message. Wrong person means they are not the right contact, left the company, or point to someone else. Unsubscribe is a request to stop. Bounce is a delivery failure notice.
The split matters because each tag needs a different next step: book the call, schedule a follow-up, stop, wait for the return date, ask for the right contact, suppress, or fix the address.
Why build a suppression file from replies?
People who ask to stop must not be emailed again, and the CAN-SPAM Act requires honouring an opt-out within 10 business days. Bounced addresses should leave the list too, because repeat sends to dead mailboxes raise the bounce rate. The file this tool writes is one column of addresses. Read what a cold email suppression list should hold before you load it.
It only covers the people who replied. The rest of the list can hold the next round of bounces, so the last step is a mailbox check.
What happens when AI mode is off?
Replies are tagged by keyword rules: phrases such as "unsubscribe", "out of office", "delivery failed" or "not interested". The rules are fast and predictable but miss anything phrased in an unusual way, so those replies are marked Needs review instead of guessed.
Who uses this tool, and for what?
- Cold emailers
- Sort a weekend of replies in a minute and see who to call first.
- Agencies
- Give a client a tagged export and a suppression file for the campaign.
- SDR managers
- Spot-check how many replies are bounces or out-of-office messages rather than people.
What can’t this tool tell you?
- AI output can be wrong or bland. Read every line before you send or import it.
- A tag is not a lead score. It says what the reply says, not whether the person will buy.
- The suppression file needs an address in the data. Pasted replies without one cannot go on it.
- It does not read threads. Each reply is tagged on its own.
Common questions
- Which export formats work?
- Any CSV with a column named reply, body, message, text, content or snippet. If it also has an email, from or lead column, the suppression file can include addresses. Pasted replies work too, separated by a line of three dashes.
- How many replies can I tag for free?
- 25 signed out and 200 signed in. AI runs are also limited per hour and per day.
- Is the reply text sent anywhere?
- Without AI, no. With AI mode on, the reply text is sent to an AI provider through our server. Addresses in a separate column are not sent.
- Can the tags be wrong?
- Yes. A sarcastic yes or a short message can be tagged wrongly. Read the Interested rows before you act on them.
- Does it reply for me?
- No. It only tags replies and writes the files. Nothing is sent to anyone.
Sources
A tidy list can still be full of dead addresses.
Extracting, deduplicating and syntax checks all work on the text of an address. None of them can tell whether the mailbox exists. Only the server that hosts it can answer that, through an SMTP check, and that is what the paid product does.
- Upload the cleaned file as it is: CSVs up to 100,000 rows
- A real SMTP mailbox check on every row, with catch-all detection
- Small list? Starter at $9/mo covers 2,500 emails a month, cancel anytime
Plans from $9 a month, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.