Same-domain send spacer: stop emailing one company's staff back to back
In short: Upload a lead list and set how many other leads should sit between two people at the same company. The list is reordered so they are spread apart, and the tool counts the pairs that were too close before and after. Limit: Only helps where the sending tool follows the order of the file.
Upload your lead list and choose how many other leads should sit between two people at the same company. The tool reorders the rows, largest companies first, so colleagues are spread apart wherever the list has enough other companies, and counts the close pairs before and after. Download the new order and upload it to a sequencer that sends in file order.
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
Where the list has enough other companies to allow it.
Sample result
Three people at example.com no longer sit in a row: the rows are reordered so each pair is at least two places apart.
- Pairs too close
- 0 after
- Companies
- 5
- Gap
- 2 rows
What this means for you
The list is in a sendable order for a tool that sends top to bottom.
- Largest companies placed first
- Gap you choose
- Close pairs counted before and after
- Every cell kept
- Cold email
- Send order
- CSV
By SimpleVerifier Team · Last updated · Runs in your browser; nothing you paste is sent to us
Spacing doesn't help a dead address.
- Copy the Email column from the file you just made, or use the check button under the result.
- 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 spread leads from the same company across a send?
- Upload the lead list (.xlsx or CSV), or paste the cells with the header row first.
- Set the number of other leads that should sit between two people at the same company.
- Read the counts of close pairs before and after; a pair that stays close means the list has too few other companies.
- Download the CSV and upload it in the new order, then check the addresses before you send.
Example
- You enter
- Eight leads in the order
jane@example.com,leo@example.com,ana@example.com,sam@example.net,kim@example.net,pat@example.io,bo@example.co,alex@example.org, with a gap of 2. - You get
- The rows are reordered so the three
example.comleads and the twoexample.netleads are each at least two places apart. The pairs closer than the gap fall from 3 to 0. - Limits
- Runs in your browser; nothing is uploaded. Files up to 25 MB.
How does the spacing work?
Companies are found from the email domain. The tool then builds the new order one row at a time, always taking the next lead from the company with the most leads left that has not been used within your gap, and keeping the uploaded order inside each company. Personal addresses at Gmail, Outlook and similar providers are treated as separate companies, so they are never spaced against each other. Rows with no address go last.
When does the order matter?
Only when your sequencer sends in the order of the file. Many tools pick leads in their own order or by schedule, in which case the new order changes nothing. The order also cannot beat the daily limits your mail provider sets on each inbox, such as the published ones for Google Workspace and Exchange Online. Check how your sequencer picks the next lead before you rely on it.
What if a company has too many leads?
A company with more leads than the rest of the list can separate will stay close together at the end, and the tool counts those pairs. Cap the leads per company first if that is not what you want, or set a smaller gap.
Who uses this tool, and for what?
- SDRs
- Avoid six emails to one company going out in the same few minutes.
- Cold email agencies
- Prepare a client's list so its order is sensible before it goes into a sequencer.
- Sales ops
- Check how clustered a purchased list is, then fix its order.
What can’t this tool tell you?
- Only helps where the sending tool follows the order of the file.
- Companies are judged by email domain, so a company with several domains is seen as several.
- It spaces rows in the file, not the time between sends.
- A list dominated by one company can't be fully spaced.
Common questions
- Does this change my data?
- No. Only the order of the rows changes; every cell is kept as it was.
- What gap should I use?
- Your own choice. A larger gap needs a list with more companies in it; the tool tells you when a gap can't be kept.
- Is the original order kept anywhere?
- Within each company, yes: its leads stay in the order you uploaded them.
- Are personal email addresses spaced apart too?
- No. Each personal address counts as its own company, so a Gmail address is never held back for another.
- Is my lead list uploaded to SimpleVerifier?
- No. The file is read and reordered in your browser.
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.