EmailSifter · Web app
Check email addresses before you send.
Paste a list, or send it from your sign-up form or an AI agent, and EmailSifter tells you which addresses cannot receive email, which are throwaway addresses that will stop working, and which are typos like gmial.com, with the address it probably meant.
EmailSifter at a glance
- What it is
- Web app
- For
- People and AI agents
- Price
- Free, or from $5 a month
- Website
- emailsifter.com
What EmailSifter does
A verdict and a reason
Each address gets ok, risky, invalid or unknown, with one plain sentence saying why.
Domains looked up live
Every check asks DNS whether the domain exists and has a mail server, so dead domains are caught.
Throwaway addresses
Over 10,000 disposable-email domains, from a public list refreshed every day.
Typos, with the fix
gmial.com, hotmial.com and gmail.con are caught, and the result suggests the address it probably meant.
Who it’s for
- Anyone about to email a list they collected: a newsletter, a shop, an event
- Developers who want sign-up forms to catch typos and throwaway addresses
- AI agents that collect or use email addresses
How it works
- Paste up to 100 addresses, or send them to the API.
- EmailSifter checks how each is written and looks its domain up in DNS.
- Read a verdict and a reason for each, or download the results as a spreadsheet.
EmailSifter pricing
Free
$0
Starter
$5 a month
Pro
$19 a month
Free for 200 checks a month. Starter has 10,000 checks a month, Pro 100,000. Refunds within 14 days, no questions asked.
Agents: $0.01 per check.
For AI agents
Agents check addresses through the API, an OpenAPI 3.1 document and the MCP server, on the same account and allowance, and pay per check past it.
Questions about EmailSifter
Does EmailSifter contact the mailbox?
No. It never talks to the receiving mail server, so it cannot tell whether one person’s mailbox exists at a domain that accepts email. It catches addresses that cannot work and addresses that will not last.
Do you keep the addresses I check?
No. EmailSifter keeps only how many checks you made and how many got each verdict, for your usage meter and billing.
What counts as one check?
Each distinct address in a request is one check, whatever its verdict. An address repeated in the same request counts once.
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