Free email tools
Seven things people ask us for often enough that they deserved their own page. No account, no email address collected, and each page says exactly what happens to what you type.
- IMAP & SMTP settings finderPaste an address and this tells you which provider actually runs its mail, and the server settings that go with it
- MX lookupA domain’s MX records say who receives its mail
- SPF, DKIM & DMARC checkerThree records decide whether your mail is trusted
- Email signature generatorMost signature generators produce something beautiful that breaks in Outlook
- Email translatorPaste an email and read it in your own language
- Email summariserTwo sentences and a next step
- Reply generatorThe hard part of a reply is rarely the words — it is starting
The tools
- IMAP and SMTP settings finder — type an address, get the server settings, worked out from the domain’s MX records.
- MX lookup — which mail servers accept mail for a domain, and which provider they belong to.
- SPF, DKIM and DMARC checker — what a domain publishes about who may send for it, quoted and explained.
- Email signature generator — a plain HTML signature that survives Outlook, built in your browser.
- Email translator — an email in English, French or Arabic, with its structure intact.
- Email summariser — two sentences and a next step from a long thread.
- Reply generator — a draft in the sender’s language from the message and a few words of intent.
What happens to what you type
Three different answers, and each tool says which applies at the bottom of its widget rather than burying it in a policy.
The signature generator runs entirely in your browser: there is no server behind that page, so there is no request to make and nothing to keep. The two DNS tools send a lookup for the domain you typed; the domain is used for the query and then forgotten — not stored, not written to a log — and only a count of how often the tool ran is kept. The three AI tools send your text to our AI provider to produce the answer; Mailbind stores none of it, and the provider is contractually bound not to train on it.
“Not stored” is a smaller promise than “never sent”, and we would rather you knew which one you are getting on which page. Do not paste anything into an AI tool that you would not send to a third party.
Each tool has a budget per visitor per hour — sixty for the DNS tools, ten for the AI ones. It exists so a resolver cannot be used as a scanner and an AI bill cannot be run up from a marketing page. When you hit it, the tool says so instead of pretending to fail.
Why they are free
Partly because they cost us little, and partly because they are each a small version of something Mailbind does properly. The settings finder is the detection on the connect screen. The translator, the summariser and the reply generator are the AI features, working on a paste instead of on your real thread. If the small version is useful, the one that already knows the conversation is more so.
There is no catch in the usual sense: no account, no email address collected, no newsletter, no watermark on the output. The signature generator does not even talk to us.
And what they are not
They are not an API. Each one is a form on a page, and the server functions behind them accept calls only from this site, so there is nothing to integrate against. If you need programmatic DNS checks there are good libraries, and they will be faster than us.
They are also not diagnostics for your mail server. These tools read public DNS and process text you paste; none of them connects to a mailbox, asks for a password, or sends a message. If mail is being rejected and the records look right, the answer is in your provider’s logs, not here.
Common questions
Do I need an account for any of them?
No. None of them asks you to sign in, and none asks for an email address or a mailbox password.
Which tools send my data anywhere?
The two DNS tools send a lookup for the domain. The three AI tools send your text to our AI provider. The signature generator sends nothing at all.
Is there a usage limit?
Yes — sixty DNS lookups and ten AI calls an hour from one place, so the tools stay available and cheap.
Can I use them for a client's domain?
Yes. The DNS tools read public records, which anybody can look up.
Keep reading
The tools are the small version
Mailbind does all of this on your real mailboxes. Two of them are free.
Start freeFree plan, two mailboxes, no card.
Page updated October 29, 2026