The mail client for the mail you could not open, find or keep.

Searched as open pst file on mac

Open a PST file on a Mac — without Outlook

Add an Outlook .pst or .ost and MailCode imports it into a local archive with the folders Outlook showed — Inbox, Sent Items, every project folder — readable and searchable as it lands. No Outlook, no converter, nothing uploaded anywhere.

• The file’s own folder tree comes across as it stands, under a folder you name.
• HTML and RTF-only bodies, attachments and attached emails come with it.
• Re-running on the same file, or on files that overlap, skips what is already in.
• Mail can be kept as .eml files on any disk, so the archive itself stays small.

Searched as open msg file on mac

Open Outlook .msg files on a Mac

Double-click a .msg someone sent you, or one saved years ago, and MailCode opens it in a viewer: the formatted message, who it was from and to, and its attachments. Nothing has to be imported first. .eml files open the same way.

• Opens straight from Finder — set MailCode as the app for .msg and .eml once.
• Attachments open, preview or save from the strip above the message.
• An email attached inside opens on top, with a back button to the one it came from.
• Any message saves out as a standard .eml file.

Searched as exchange email client for mac without outlook

An Exchange mail client for Mac, without Outlook

MailCode connects to Exchange directly — Exchange Server over EWS, and Microsoft 365 — with your mail, folders and calendar in one window. IMAP accounts such as Gmail and Fastmail sit in the same tree, so it can be the one mail client on the machine.

• Accept, Tentative, Decline or propose a new time, right on the invitation.
• Month, week and three-day calendar views, with the day’s agenda beside them.
• Rules, auto-reply and scheduled send, per account.
• The same app on Windows 10 and 11.

Searched as exchange mailbox full archive old email

Mailbox full? Move old mail to your own disk

How full the server mailbox is sits in the status bar while you work. When it nears the limit, MailCode moves mail older than a date you pick into the local archive — copying it, checking the copy, and only then removing it from the server. The mail stays searchable with everything else.

• Only messages verified present in the local archive are ever removed from the server.
• Attachments are downloaded before the server copy goes, never after.
• Recoverable delete by default; permanent only if you choose it.
• Compare any folder against the server, message by message.

Searched as search old emails offline

Search years of old email — offline

Every message is held in a full-text index on your disk, so search answers without a connection, across every account and every imported archive at once. Each result says which year and folder it lives in, and the conversation’s timeline runs across the top.

• Searches take 4–48 ms (median to 95th percentile) on a 285,978-message archive, measured October 2026.
• Filters for unread, attachments, flags and dates, and from:, subject: and OR in the box.
• Mail imported from PST, .msg and .eml turns up in the same results.
• Each tab keeps its own search, so one query never overwrites another.