Email deliverability glossary: 40 terms every sender should know
Forty email deliverability terms defined in one or two sentences each: bounces, SPF, DKIM, DMARC, spam traps, greylisting, sender reputation, inbox placement and verification.
Role accounts like info@ and sales@ belong to a function, not a person. Why ESPs distrust them, the consent problem, when B2B senders can still use them and how to detect them.
Role-based email addresses such as info@, sales@ and support@ belong to a function rather than a person. You can email them in B2B when you have a genuine business reason and a way to confirm consent, but you should not add them to marketing lists by default: they are shared, often unmonitored, bounce more often and generate more spam complaints than personal addresses, and many ESPs refuse to import them at all.
A role account is a mailbox addressed to a job or department instead of a named individual. The local part describes a role: info, sales, support, admin, contact, hello, office, billing, hr, careers, webmaster, postmaster, abuse, noreply.
Behind the address there might be one person, a rota of several, a ticketing system, a distribution list that fans out to a whole team, or nobody at all. The address outlives the people who read it, which is the whole point of having one, and also the root of every problem with mailing it.
Some role accounts are defined by standards. RFC 2142 expects postmaster@ and abuse@ to exist at any domain that sends mail, and they are reserved for operational contact, not marketing. Mailing them with a newsletter is a quick way to be reported.
A marketing email is sent to a person who agreed to receive it. When the address is a shared inbox, that chain breaks. The person who filled in your form with info@ may have left, or may have been one of eight people reading the mailbox, and the other seven never agreed to anything. One of them marks your message as spam, and the complaint counts against you as if the whole address had.
In practice role accounts bounce more, because companies create and retire them freely, and complain more, because whoever opens the inbox is usually looking for customer enquiries and treats everything else as noise. Mailbox providers measure both. After the February 2024 bulk sender rules from Gmail and Yahoo, the spam complaint rate has to stay under 0.3%, and a list heavy with role accounts makes that harder.
Mailchimp, Klaviyo and most other platforms either flag role addresses on import, refuse them outright, or hold them for review, because they have learned from their own abuse data what happens next. If you push a list containing hundreds of info@ addresses into an audience, expect it to be rejected or your account to be reviewed. The Mailchimp and Klaviyo integrations tag role accounts during sync so you can keep them out of your main audience.
Role addresses are also what spammers and scrapers guess first, because every company has an info@. A mailbox that receives mail from everyone who has ever bought a domain list is a mailbox whose owner has a very low threshold for the report button.
Consent is the heart of it. Under GDPR, PECR in the UK and similar regimes, marketing to an individual needs a lawful basis, and consent given by one person does not transfer to a mailbox read by others.
The picture is different for corporate subscribers. Several regimes treat mail to a generic business address more leniently than mail to a named individual, and B2B legitimate interest arguments are easier to make for sales@ than for a named employee. But legally defensible is not the same as welcome, and deliverability is governed by the recipient's behaviour, not the regulation. If the people reading the inbox did not ask for your email, the complaint rate will say so.
Role accounts are not forbidden, and in some situations they are the right address.
The test we suggest: would the people reading the inbox recognise why they are receiving this, and would they expect it? If yes, send. If the honest answer is that you are mailing it because it was on a list, do not.
Detection is a matching problem. We maintain a list of role prefixes and match the local part of every address against it during the reputation stage of verification. Exact prefixes (info, sales, support) are the easy part. We also catch common variants and compounds such as sales.team, info-uk, support2 and helpdesk, while avoiding false positives on personal addresses that happen to contain a role word, like adminah or marketing.lee.
You can check a single address with the role email checker. In a full verification through the email checker or the bulk email verifier, a role account keeps its deliverability verdict (the mailbox may well exist) but is marked with a role flag and scored lower, so it lands in the risky band rather than being treated as a clean personal address. That lets you decide the policy rather than having it decided for you.
Combine the flag with engagement data from your ESP. A role address that has opened three of your last five emails is behaving like a subscriber; one that has never opened anything is behaving like a shared inbox.
Our suggested defaults, which you can adapt to your sending:
Test a few addresses in the role email checker, then run your full list through the bulk email verifier to see how many role accounts you are mailing today and how they score. Put the form validation widget on your signup forms so the next info@ gets a friendly request for a personal address instead of a place on your list.
Related reading
@Forty email deliverability terms defined in one or two sentences each: bounces, SPF, DKIM, DMARC, spam traps, greylisting, sender reputation, inbox placement and verification.
@Real-time email validation checks an address as it is typed: syntax, typos, disposable domains, role accounts, MX and an optional mailbox check. Here is how it works.
@Gmail, Outlook and Yahoo addresses carry no company signal, so B2B teams segment them. When free addresses are legitimate, how the free and role flags route them, and bulk detection.
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