Email Guesser Tool

Finding direct lines to decision-makers usually means wading through inaccurate databases or spending hours on manual research. An email guesser solves this by converting basic contact details—a prospect’s full name and corporate domain—into potential email addresses. This tool generates all the possible variants of a corporate email. 

The email guesser creates standard corporate address variations only; it does not test active mailbox status against receiving mail servers. Always export your results and upload them to an email list checker to confirm deliverability prior to sending.

NOTE: The email guesser creates standard corporate address variations only; it does not test active mailbox status against receiving mail servers. Always export your results and upload them to an email list checker to confirm deliverability prior to sending.

How to use this tool

Upload a headerless CSV file containing exactly three columns formatted in order of First Name, Last Name, and Domain. Review the parsed data preview and select the specific email format patterns you need to generate. Execute the generation process to compile the variations and download the final list as a new CSV file.

Email Guesser Tool

Email Guesser

1. Data Preparation

  • Privacy: All processing executes in your browser. Files are not uploaded to external servers.
  • Data Limits: Limit uploads to 5,000 rows per file to prevent browser memory errors.
  • Format: The file requires exactly three columns: First Name, Last Name, and Domain. Do not include a header row.
  • Missing Data: If a person's Last Name is unknown, leave the cell empty. The tool will automatically use a first-name format for that row.
Column A (First Name)Column B (Last Name)Column C (Domain)
JaneDoeexample.com
Johnacme.co.uk

2. Upload Data

3. Data Preview & Format Selection

File Preview (First 3 Rows)

First NameLast NameDomain

Select Formats to Generate

SelectFormat NameFormat PatternExample

4. Results

Notice: Adjustments applied during generation.

    What Next

    Remember, you still need to clean this list by uploading it to an email list checker. Before adding these generated email addresses to your outbound sequence, import them into our Lead Generation Google Sheet CRM.

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