Email deliverability for healthcare marketers
Where the addresses come from
- Patient portal sign-ups, which sit under privacy rules from the moment they are captured.
- Appointment booking systems, where the address is operational data attached to a care relationship.
- Health content and newsletter signups, which are marketing rather than clinical and should be held separately.
- Referring doctor contacts, a trade list with ordinary business-domain traits.
A wrong address is a disclosure
In most sectors, mail reaching the wrong person is embarrassing. Where the content relates to a person's health, it can be a reportable privacy incident with duties attached.
That raises the stakes on a mistyped address enormously. A single wrong character can produce a valid mailbox belonging to a stranger, and checking will correctly report it as deliverable, because it is.
It also constrains the marketing itself. Combining patient data with business messaging requires care about consent and about what the message reveals, and those rules govern the list before delivery does.
What the results tend to look like
Consumer-weighted for patient lists and business-weighted for doctor lists, and those two should never be measured together. Practitioner domains carry the usual high catch-all rate; patient addresses behave like any consumer list.
What to do about it
Confirm the address with the patient rather than validating it
A deliverable address is not necessarily the right person's address. A confirmation step at capture is the only defense against a transposition that produces a valid mailbox.
Keep clinical and marketing lists separate at the system level
Different consent, different content rules and different results for a mistake. Sharing a list means the strictest rules apply to everything.
Check doctor lists on a normal schedule
The referring-doctor list is an ordinary B2B list with ordinary decay, and it can be treated as one.
Keep content generic where the list is patient-derived
A message that reveals nothing about a person's condition limits the damage from an address error you did not catch.
Questions people ask
Can checking prevent a message reaching the wrong person?
No. A transposed character can produce a perfectly valid mailbox belonging to a stranger, and we would correctly report it as deliverable. Confirming the address with the patient is the only defense.
Should patient and marketing lists be combined?
No. They carry different consent and different content rules, and combining them means the strictest duties apply to everything you send.
Does an email checker see the content of my list?
We receive the addresses in order to check them. What that means for a list derived from patient data is a question for your own privacy assessment before you upload anything.
Related sectors
See the breakdown on your own list
100 free checks a month, no card. Addresses we could not get an answer on come back labeled rather than guessed at, and we do not bill them.