Guides Problems solved Features Legal & Forensic IT & Security Journalism Privacy Pricing

Guides

Step-by-step: getting your archive out of Gmail, Outlook, Apple Mail or Notes and into something you can search.

Guides

How to open a Gmail Takeout .mbox file on a Mac (and actually search it)

Google Takeout hands you a huge ZIP with an .mbox inside that nothing on your Mac wants to open. Here is how to unzip it, import it into mailin, and search the whole thing without uploading a byte.

5 min read
Guides

How to read Outlook PST and OST files on a Mac without Outlook

A PST from an old Windows PC or an OST from a dead laptop, and no Outlook on your Mac. mailin reads both directly, up to 50 GB per file, and exports messages in formats anything can open.

4 min read
Guides

Opening Lotus Notes .nsf archives on a Mac

Legacy Notes mail is usually kept but rarely searchable. mailin reads .nsf files natively on a Mac, up to 64 GB per file, and gets the messages into open formats that will outlast the platform.

4 min read

Problems solved

The complaints we heard most, and what changed in mailin 2.0 to fix them.

Problems solved

My archive is too big to open: how mailin 2.0 streams a 200 GB Takeout

Most parsers try to hold the whole archive in RAM. mailin 2.0 streams it in batches of 200 messages, counts oversized messages as damaged instead of crashing, and stops honestly on read errors.

4 min read
Problems solved

The import crashed at 80%: resumable imports with per-batch checkpoints

A crash, a sleep, or a forced restart no longer means starting the import over. mailin 2.0 checkpoints every batch of 200 messages against the file's hash and picks up where it stopped.

4 min read
Problems solved

'Scrolling back to 2014 froze the app': keyset pagination in mailin 2.0

Offset pagination gets slower the deeper you scroll. mailin 2.0 replaces it with a date-and-id cursor, splits the search index by year, and keeps the same UI.

4 min read
Problems solved

Leaving a job or closing Gmail? How to keep a searchable copy of your email

A raw mail export is easy to get and nearly useless on its own. How to turn it into a private, searchable archive on your Mac before the account disappears.

4 min read
Problems solved

Was that email really from my bank? Checking suspicious email headers

Save the message as a file, open it in mailin, and read what the receiving server and the routing chain actually say. Nothing is uploaded, and no account is needed.

5 min read
Problems solved

'Which of these 5,000 emails matter?' A lawyer's first pass in mailin

From a client's .pst to a coded, privilege-checked set: Early Case Assessment, First-Pass Review and Privilege QC & Redaction, with predictive coding as a prioritization aid.

5 min read

Features

What each part of mailin does, and why it works the way it does.

Features

Search an email archive like an analyst: boolean, regex, proximity and BM25

Mailbox search finds one message you half-remember. Working through an archive needs operators, ranking and an index that stays fast at depth. Here is how mailin's search works.

5 min read
Features

An AI assistant that cites its sources: Thread Story and grounded answers

A summary you cannot check is a claim, not an answer. How mailin's AI Assistant, Thread Story and AI Digest keep every output tied to the emails it came from.

4 min read
Features

The analytics dashboard: who emails you most, when, and about what

A mail client shows one message at a time. When you need the shape of a whole archive, you need the timeline, the heatmap, the contact graph and the Executive Dashboard.

4 min read
Features

47 guided workflows: how mailin turns a job into a numbered document

mailin 2.0 ships 47 guided workflows for forensic, legal, IT/SOC, journalist and personal jobs. Here is how the runner, sign-off and Documents & History work, with the full list.

5 min read
Features

Duplicate Manager: cleaning an email archive without losing anything real

Three overlapping exports mean the same message three times over. How Duplicate Manager removes exact copies, hands near copies to you, and makes the cleanup stick.

4 min read
Features

Every export format in mailin, and when to use each

EML or PDF? CSV or JSON? Bates PDF with load files? A walk through each export format mailin offers, what it preserves, and the situation it is built for.

4 min read

IT & Security

Headers, authentication results, phishing triage and incident workflows.

IT & Security

SPF, DKIM and DMARC: reading email authentication results to spot phishing

The three authentication checks answer three different questions, and none of them is "is this phishing?" Here is how to read the results the receiving server recorded, and what to look at next.

5 min read

Journalism

Working sensitive mailboxes offline, with provenance and cited findings.

Journalism

Working a leaked mailbox without uploading it: mailin for journalists

From intake to publication, the Journalist and Researcher workflows keep a leaked mailbox on your own Mac: hashed at import, searched offline, cited in the draft, redacted before it ships.

5 min read

Privacy

No account, no cloud, no analytics — and exactly what the optional Cloud AI mode does.

Privacy

What 'on-device AI' actually means in mailin

Two Apple engines, a fallback chain, a provenance tag on every output, and a Cloud AI mode that is off until you turn it on with your own key. What runs where, and what is sent.

4 min read
Privacy

No account, no cloud, no analytics: how mailin handles your data

The App Store label says the developer collects nothing. Here is what backs that up: no mail-server code, StoreKit as the only default network use, and a Cloud AI mode that is off until you turn it on.

5 min read

Pricing

Tiers, Universal Purchase, and which plan fits which job.

Pricing

Free vs Personal vs Professional: which mailin tier do you need?

A side-by-side of the three tiers at App Store prices, who each one suits, and the plain arithmetic on monthly versus yearly versus lifetime.

5 min read
Pricing

One purchase, three devices: mailin on iPhone, iPad and Mac

Buy once on the App Store and use mailin on all three devices. The archive stays where you imported it, only settings sync, and Apple Intelligence depends on the OS version.

5 min read