Bulk email risk flags checker: disposable, free, role and dead domains in one pass
In short: Paste email addresses and get five flags per row in one pass: disposable domain, free provider, role prefix, likely typo and no mail server. Limit: Reads the domain and the prefix, never the mailbox: a clean row can still be a closed address.
A bulk email risk flags checker runs one pass over a pasted list and marks each address with the flags that apply: a disposable domain, a free provider, a role prefix like info@ or sales@, a likely domain typo, or a domain with no mail server. Up to 1,000 domains a run, 5,000 signed in. It checks the domain, not the mailbox. CSV download.
Price: this tool is free. Checking a whole email list is from $9/mo, and the first 100 checks are free with Google, no card. Check your list free nowSee pricing
Sample result
lee@throwaway.example is on the disposable list; info@globex.example is a role address.
- Address
- lee@throwaway.example
- Domain
- throwaway.example
- Disposable list
- Listed
What this means for you
Flags show which addresses to look at first. A clean row can still be a closed mailbox.
- Disposable, free, role, typo, no mail
- Most serious flag on each row
- One CSV column per flag
- Nothing emailed
- Disposable
- Role
- Free
By SimpleVerifier Team · Last updated
Also in: Português (Brasil) · Español · Deutsch · Français
Got a list to sort by risk before you send?
- Paste it above to see which addresses carry a flag, with a CSV of every flag per row.
- Upload or paste it at /verify. Every address gets a live mailbox check, and the first 100 email checks are free with a Google sign-in, no card.
How do I flag disposable, role and free addresses in a list at once?
- Paste email addresses, one per line, or upload a CSV. Addresses are found anywhere in the text.
- Press Flag risky addresses. The list is read in your browser and only the unique domains are sent for the disposable and MX lookups. No mail is sent.
- Read each row's most serious flag: No mail server, Disposable domain, Possible typo, Role address, Free provider or No flags.
- Filter to the flags you care about and download the CSV, which has one yes or no column per flag.
Example
- You enter
- Five addresses:
jane@acme.example,info@globex.example,sam@gmail.com,lee@throwaway.example(on the disposable list) andkim@gmial.com. - You get
- jane: No flags. info: Role address. sam: Free provider. lee: Disposable domain. kim: Possible typo, with the likely domain. Each row's flags are in the CSV.
- Limits
- Up to 1,000 unique domains a run without an account and 5,000 when signed in with Google. 100 domains a request; list and DNS lookups only.
Which five flags does it look for?
Each address is tested for a domain on the disposable-email list, a domain among the largest free mailbox providers, a role prefix (info@, sales@, support@, noreply@ and their regional variants), a domain that looks like a typo of a big provider, and a domain with no mail server.
The row shows the most serious flag, in that order from bad to mild, and the CSV keeps every flag as its own column so you can filter in a spreadsheet.
What should I do with each flag?
No mail server and disposable domains are the clearest removals: nothing will be read there. A possible typo is worth fixing, not deleting, and the bulk email typo domain checker gives the corrected address. Role addresses reach a team rather than a person, which matters for cold outreach; see how to tell a role address.
A free provider is information, not a fault: it often means a personal address rather than a company one.
What does a clean row still not tell me?
No flags means the domain looks ordinary. It does not mean the mailbox exists, that a person reads it or that it won't bounce. Nothing here connects to a mail server.
That is the mailbox check's job, and the hand-off below carries the same list there.
Who uses this tool, and for what?
- Cold emailers
- Strip role, disposable and dead-domain rows before loading a sequence.
- Marketers
- Tag a newsletter export by risk before an import.
- Product teams
- Triage signups for throwaway and mistyped addresses.
- Agencies
- Add a risk-flags column to a client list audit.
What can’t this tool tell you?
- Reads the domain and the prefix, never the mailbox: a clean row can still be a closed address.
- The free-provider flag covers the largest providers only, and the typo flag only close matches to big providers.
- Role prefixes are a list of common ones; a role address with an unusual prefix looks personal.
- Up to 1,000 unique domains a run without an account, 5,000 signed in.
Common questions
- How do I check a list for disposable and role-based emails at once?
- Paste it into a bulk email risk flags checker like this one. One run marks disposable domains, role prefixes, free providers, typos and dead domains on every row.
- Is this bulk email risk flags checker free?
- Yes. It is a free tool: up to 1,000 unique domains a run with no account, and up to 5,000 a run when you sign in with Google, with no card.
- Is a free provider a risk?
- No. It is listed so you can separate personal from company addresses. Only the other four flags point at addresses that may not work.
- Does No flags mean the address is valid?
- No. It checks the domain, not the mailbox, so a clean row can still be a closed mailbox.
- Which free providers does it know?
- The largest ones, such as Gmail, Outlook.com, Yahoo and iCloud. Smaller or regional providers show as ordinary domains.
- Does it send an email to test?
- No. It reads the disposable list in the code and each domain's DNS, and never connects to a mail server.
Sources
A tidy list can still be full of dead addresses.
Extracting, deduplicating and syntax checks all work on the text of an address. None of them can tell whether the mailbox exists. Only the server that hosts it can answer that, through an SMTP check, and that is what the paid product does.
- Upload the cleaned file as it is: CSVs up to 100,000 rows
- A real SMTP mailbox check on every row, with catch-all detection
- Small list? Starter at $9/mo covers 2,500 emails a month, cancel anytime
Plans from $9 a month, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.