CRM data cleaning when the email field is the problem
How the list got this way
- Reps typed addresses from business cards, voicemails and half-heard spellings over several years.
- Enrichment tools filled blank fields with addresses generated from a naming pattern rather than observed anywhere.
- Imports from a previous system arrived without deduplication, so one person exists three times with two addresses.
- Nobody owns the field. Marketing assumes sales maintains it and sales assumes the enrichment vendor does.
The pattern-guessed address is the specific danger
Enrichment often works by inferring a format. If two known addresses at a company are first.last, the tool writes first.last for everyone else it finds there. Sometimes that is right.
On a catch-all domain the guess cannot be tested, because the server accepts every recipient including the invented ones. The row looks populated and confident, the deal record shows an email address, and nobody can tell it apart from an observed one.
So the damage is not a bounce. It is a rep who believes they have reached a decision maker, a sequence that runs to completion against nobody, and a pipeline forecast built on contact that never happened.
What a check removes, and what it leaves
Both columns matter. A verifier that only advertises the left one is describing half the job.
| Removed by checking | Still there afterwards |
|---|---|
| Addresses at domains that reject them, which are commonly the guessed ones at companies that do not use catch-all. | Separate a guessed address from an observed one on a catch-all domain. Both accept, and no verifier can distinguish them. |
| Rows pointing at companies whose domain no longer resolves, which flags the account as much as the contact. | Tell you whether the person still works there, which is the most common reason a CRM address is wrong. |
| Duplicate contacts that differ only in address formatting, which distort every count in the CRM. | Recover the correct address. A rejection tells you what you have is wrong, not what is right. |
| Role addresses sitting in fields that should hold a named person. | Judge whether a contact is worth keeping, which is a sales decision rather than a data one. |
What to do instead
Record the source of every address
Observed from a reply, given on a form, or generated by a tool. Without that field you cannot tell which rows to distrust, and it costs nothing to capture going forward.
Flag the field, never delete the record
An invalid marker on the email field keeps the history and stops the sequences. A deleted contact takes the account history with it.
Treat enrichment output as a hypothesis
An address a tool generated is a guess until something confirms it. A reply confirms it. Acceptance by a catch-all domain does not.
Verify on write, not in an annual sweep
Checking at the point a record is created or updated stops the bad rows entering. A yearly cleanup is an admission the intake has no gate.
Questions people ask
Should invalid CRM contacts be deleted?
No. Mark the email field invalid and keep the record. The contact carries call notes and deal history that have nothing to do with whether one field is deliverable.
Can verification tell whether an address was guessed by an enrichment tool?
Only where the domain rejects it. On a catch-all domain a guessed address and a real one both come back accepted, and no product can separate them. That is why recording the source of the address matters more than the check.
Why does the same person appear several times in our CRM?
Usually an import that matched on an exact email string. One person with a work address and a personal address, or a formatting difference, becomes two records and neither shows the other's history.
How often should CRM email data be checked?
Business addresses decay quickly because people change jobs, so a sales database goes stale faster than a consumer list. Checking on write and re-checking before a campaign covers most of it.
Related list problems
Measure your own list before you clean it
100 free checks a month, no card. The rows we could not get an answer on come back labeled rather than guessed at, and we never bill for them.