Search
Find any email, in every account, at once
Type a word and 1B Mail searches every account on your own device, ordered by relevance and date. Filters and Outlook-style search terms narrow it down in seconds.
Included in every copy of 1B Mail, not part of Pro.
What it is
1B Mail keeps a full-text index of your mail on your computer, so search doesn't wait for a server: on our test mailbox of 50,000 messages, the median search took 23 ms.
It ignores accents and capitals, matches the start of words and looks in senders, recipients, subjects and message text. Results are grouped by conversation.
- All accounts at once
- On your device
- 23 ms on 50,000 emails
- Search terms like Outlook
How it works
- Step 1
Type in the search box
Press Ctrl+E (or click the box at the top) and type. Results appear as you write, from every account.
- Step 2
Narrow it down
Use the chips — From, To, Has attachments, Flagged, Unread — or search terms: from:anna subject:quote has:attachment.
- Step 3
Dates, folders and labels
before:2026-09-01, after:yesterday, in:sent, account:work, label:invoices. Put words in quotes for an exact phrase, or a minus sign to exclude one.
Screenshots of the real app with made-up sample data.
Search terms you can use
from: · to: · cc: | Sender or recipients |
|---|---|
subject: | Words in the subject |
has:attachment | Only messages with attachments |
is:unread · is:flagged | Unread or flagged messages |
before: · after: · on: | Dates like 2026-10-01, today or yesterday |
account: · in: | One account or one folder |
label: · has:nolabel | One label, or messages without labels |
"exact phrase" · -word · OR | Phrases, exclusions and alternatives |
Who it's for
Long-time email users
Years of mail across several accounts, searched in the time it takes to type.
Accounting and admin
Every invoice from one supplier with from: and has:attachment.
Offline moments
Search works without a connection, on what's already on your device.
Good to know
- Search covers the mail synced to this device.
- In Chinese and Japanese, search matches the start of phrases for now.
- The figure of 23 ms is the median of 15 searches on our development PC with a 50,000-message test mailbox.
Questions about this feature
Does search send my words anywhere?
No. The index lives on your device and searches never leave it.
Can I search a single account?
Yes, with account: or by opening that account's folder first.
Do the search terms work in my language?
The terms work in English everywhere, and in Spanish there are equivalents such as de:, para:, asunto: and tiene:adjunto.
Related features
Labels and folders
One label for every account, stored the right way for each provider.
How it worksAll your accounts
Gmail, Outlook.com, Yahoo, iCloud and any IMAP server in one unified inbox.
How it worksPro
Inbox by type & Screener
Important, Updates and Receipts & alerts — and first-time senders wait for your yes.
How it works
Try it yourself
Download 1B Mail for Windows or Linux, or get it on Google Play for Android.