An email address can look almost right and still point somewhere else. A missing letter, an extra dot, or a mistyped domain may prevent delivery—or, if the altered address belongs to someone, send your message to an unintended recipient without warning. Before sending again, compare the address you entered with the one you meant to use, character by character. If a message has already gone out, the next step depends on what happened: a bounce offers clues, but no bounce does not prove that the intended person received it.
The useful bits
- Compare the complete address, including punctuation and everything after the @ sign.
- Treat a bounce as evidence about delivery, not automatic proof of the exact typo.
- Confirm corrections through a trusted channel before sending sensitive information.
Compare the whole address, not just the name
Start with the address itself rather than the display name shown beside it. Display names can be similar, abbreviated, or set by the account holder; they do not establish which mailbox will receive a message. Put the intended address and the address in the message side by side, then read both from beginning to end.
Check the part before the @ sign, the @ sign itself, and the domain after it. Look for a dropped or repeated letter, a transposed pair, an added character, or a punctuation mark in the wrong place. Pay attention to dots, hyphens, and underscores: they may distinguish one written address from another. Do not assume two addresses are equivalent because they look alike.
Inspect punctuation and the domain separately
The domain is not decoration. A correct-looking mailbox name followed by the wrong domain is a different destination. Compare the domain against a reliable copy of the intended address, paying attention to every character and the ending. For example, a familiar organization name with one altered letter can appear plausible while referring to a different domain.
Also check for punctuation accidentally included at the end of an address when copying from a sentence, or for spaces inserted while editing. Avoid making a correction based on what seems likely. If you are unsure whether a dot, hyphen, or spelling difference is intentional, ask the recipient to confirm the exact address.
What a bounce can—and cannot—tell you
A bounce means the sending system reported that it could not deliver the message to the destination as addressed. Its notice may identify an invalid destination or give other delivery details. Read the notice and compare the address it refers to with the address you typed; do not assume the notice has diagnosed a particular spelling error for you.
A bounce is different from silence. A syntactically plausible address may lead to a mailbox that exists but is not the person you intended. In that case, the message may not bounce at all. The absence of a bounce does not confirm that the correct recipient received or read your message.
A practical comparison before resending
Use a fresh, trusted copy of the intended address rather than repeatedly editing the one that may contain the mistake. Compare each segment, then check the recipient field again before sending. If the message is sensitive, pause until you have confirmed the destination independently.
- Confirm the spelling before the @ sign.
- Check punctuation and remove any accidental spaces or trailing marks.
- Compare the complete domain and its ending with a trusted source.
- Verify that the corrected address appears in the recipient field before sending.
Intended: alex.lee@[organization-domain].example.com Typed: alex.lee@[organization-domian].example.com Check: Compare every character in the domain; the transposed letters change the address.
Confirm a correction through a trusted channel
If you do not know which character is wrong, contact the intended person using a phone number, messaging account, or other contact method you already trust. Do not rely on a reply from a questionable address as the only confirmation. If the request to change an address came in an unexpected message, verify it independently before using the new destination.
For a workplace or organization, use an established internal directory or ask the relevant contact through a known channel. A message asking you to send records, payment details, or confidential material to a revised address deserves particular care. Confirm the exact address, not just the person’s name or the general domain.
Check that the correction worked
After confirming the address, send only what is appropriate for that recipient. Review the recipient field and the message content once more before sending. Then check for a delivery failure notice. If one arrives, read it and compare its destination details with your corrected address; if the notice is unclear, contact the recipient through the trusted channel rather than guessing again.
If there is no bounce, that only means you have not received a failure notice. It does not establish who received the message. When the stakes are meaningful, ask the intended recipient through a trusted channel to confirm receipt. If you suspect that sensitive information went to an unintended address, avoid sending follow-up details there and follow your organization’s established reporting process.
About this guide
Prepared with AI assistance for the BITTU Mail editorial library. Check important details against your original messages and current account settings. Product access depends on your role, plan and provisioning state. Provider interfaces and requirements can change.
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