Paper forms are one of the easiest ways to create a dirty email list. You get handwriting ambiguity, rushed entry, and transcription mistakes layered on top of one another.
The usual problems
- missing
@signs - typo domains
- unclear handwriting
- half-complete addresses
- data-entry mistakes during transcription
A cleaner workflow
- Enter the addresses into a spreadsheet carefully.
- Save the file as CSV.
- Upload it to MailCull before importing it into your sending platform.
- Review the risky and undeliverable rows separately.
Paper-sourced lists often produce more recoverable typo corrections than purely digital lists, so the review step matters.