Mailto Link Parser

Decode mailto path recipients and percent-encoded query fields without opening an email client or sending a message.

Runs locallySyntax ≠ deliverabilityIDN-awareDisplay names accepted

Mailto URI

Cc / Bcc

SubjectBody

ReadyPercent-encoded fields are decoded locally.

These tools work locally on text. Syntax validation is not mailbox verification: no DNS/MX lookup, SMTP connection, account-existence check, or deliverability test is performed.

Decode without treating “+” as a space

Parse path/query recipients, subject/body and unknown headers locally, flag repeated single-value fields and recipient duplicates, and rebuild a canonical link for round-trip review.

Deliverability remains a separate network question

These tools intentionally stop at local parsing, normalization and URI construction. A syntactically valid address can still have no MX service, no mailbox, a catch-all domain, or delivery restrictions; v266 does not label those network states without actually checking them.