About this utility
How to use Email List Normalizer
Validate, normalize, deduplicate, and sort a pasted email list without contacting mail servers.
What to provide
Separate addresses with commas, semicolons, or new lines. Display-name forms such as Ada <ada@example.com> are accepted.
- Paste, type, or drag and drop a supported text file into the input area.
- Choose the options that match your intended result.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
What the result means
One normalized address per line plus valid, duplicate, and rejected counts.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- Syntax validation cannot prove that a mailbox exists or accepts mail. Internationalized local parts and provider-specific alias rules are not rewritten.
Try the included example
Select “Load example” at any time to restore this tested sample.
Ada <Ada@Example.COM>; lin@example.com
ada@example.com
invalid-address