Clean a contact list, and keep it clean
A contact list goes wrong in the same ways every time: typos in email domains, phone numbers in five formats, the same person twice, people who've left. Klerio fixes what's certain, flags what it shouldn't guess, and remembers your corrections for next time.
How it works
- Create a list for each client and upload their latest export (CSV or Excel).
- Klerio tidies emails, phones, postcodes, names and dates, and merges duplicates.
- Check the few things it flagged: an email typo, a date that could be read two ways.
- Next week, upload again: see who's new, who's gone and what changed, with your fixes applied automatically.
Why Klerio
- Bounce checks: Domains that can't receive mail, typos like gmial.com and throwaway addresses, caught before you send.
- Fix once, fixed for good: Corrections are remembered on every future upload, and repeated ones become rules.
- What changed since last time: New, removed and updated contacts, with the old and new value for each change.
- Reports for clients: A clear PDF or Excel summary to send each client, on a schedule if you like.
Common questions
Who is it for?
Virtual assistants, agencies and small businesses who look after contact lists for clients.
Can I try it?
Yes, free for 1 day, then £4.99 a month. The free data cleaner needs no account at all.
Where is my data kept?
Lists keep their cleaned records so changes can be shown; files worked on in the Workspace and file tools stay in your browser. Our data-handling page lists every feature.