The free check

Send us your list

One check on one file, free, once per organisation. This form takes your details and a call slot.

The free check takes one whole file, roughly 500 to 5,000 rows, and the more rows you send the more it will show you.

Go to the form

Send us your list

A file handover, nothing to operate.

Pick a call slot

Fifteen minutes, on your rows.

We run it the day before

Nothing runs until your call is booked.

See your own rows on the screen

Keep the one-page summary.

You get three numbers and your own rows walked through on a call. You do not get a file back.

1 Who you are Your name Your organisation Work email One check per organisation, and the address is how we tell organisations apart.

2 How big is the file Roughly how many rows Your best estimate of the whole file as it stands. Roughly 500 to 5,000 rows.

3 Your file Choose the file A spreadsheet, as it came out of your system. Up to 25 MB.

4 What you are asking us to do

This is the written instruction the work runs on. It is the standard data protection step for this kind of work, and it is short on purpose. Read it, and confirm it at the bottom.

I am instructing you on behalf of the organisation named above, and I am authorised to give this instruction.
The file I will send you contains the number of business contact records stated above, which is the whole file as it stands and is not more than five thousand records. It holds names, business email addresses, job titles, employers, and business telephone or mobile numbers for people in a professional capacity. It contains no special category data and no criminal offence data.
Please check the file for duplicate and conflicting records, check whether the business email addresses are deliverable, check whether the telephone numbers are live mobile numbers, and for up to one thousand of the records check whether the people are still in the role and organisation the file says they are. Tell me the results on a call. Please do not send me a file back.
Anything in the file you should never touch or add to:
Retention: this is a free check, so you run it in a working account created for it, and that account and everything in it is deleted automatically seven days after you process the file, or seven days after it arrives if it is never processed, whether or not I ask.
I confirm I have a lawful basis for this processing and the right to share this file with you for this purpose. I accept the Datuma Data Processing Terms, version 1.1, at datuma.co.uk/processing-terms/.

I am instructing you on behalf of the organisation named above, and I am authorised to give this instruction. The six points above are what I am asking you to do with this file. I have a lawful basis for this processing and the right to share this file, and I accept the Datuma Data Processing Terms, version 1.1.

5 When suits you

Here is exactly what happens. You pick a slot. We run your file by hand the working day before the call. On the call you see your own rows on the screen, and we walk you through three numbers: cleared, removed or held, and could not check. You keep a one page summary, including a small sample of your own rows worked in full. Nothing runs until your call is booked, and everything we hold is deleted automatically seven days after we run your file, whether or not we speak. If we never run it, it is deleted seven days after it arrives.

Give us two or three times that would work. Alasdair Carter confirms one of them by reply the same working day, and that reply is what books the call.

First choice Second choice Third choice, if you have one

The details on this form are sent to Datuma and held in our systems in the European Union (Ireland) so that a person can reply to you. See the Privacy page.

What a checked row looks like when it comes back

…_channel-verdict_v01.csv FILE 2 OF 7

The channel verdict, on every contact

What the checks returned, contact by contact, each with the evidence and the date it was checked.

AS IT ARRIVED

Richard Calloway, Marketing Director, Longmarsh Brook Media Ltd, rcalloway@longmarshbrook.co.uk

WHAT THE CHECK RETURNED

The address accepted mail when it was checked.

DATE CHECKED

2026-07-22

WHERE IT ENDED UP

In your cleared file.

2,400 contacts, each with a verdict and the evidence behind it.

2,106 carry a channel with a dated check, and those are exactly the rows in your cleared file.

The free check runs the email and phone checks across your whole file, and the identity check on up to 1,000 rows.

An example pass. The organisations and people in it are invented and the figures are illustrative, not measured.

What to send us

Send it in the shape it came out of your system.

The file as it is

NAMEROLEORGANISATIONEMAIL

Your own headers in your own order. Names, roles, organisations and email addresses, however you label them. Empty cells can stay empty.

No link on the row

AS IT ARRIVED

A. Whitfield, Head of Marketing, Marlow Ridge Consulting Ltd, a.whitfield@marlowridge.co.uk

When a row carries no LinkedIn URL, we can only go looking if it has a first name and a work email domain.

Send us your list

Thank you. That is with us.

What a checked row looks like when it comes back

The channel verdict, on every contact

Send it in the shape it came out of your system.