Attach
Raleigh, North Carolina, United States
What it is
Attach is a web service and browser extension for sharing trackable document links with sales prospects. It records opens, viewers, page-level time, navigation, close events, approximate city, device type, and viewer count. Senders can password-protect files, disable downloads or viewing, set expiration dates, and delete or replace documents after sharing. A centralized content hub stores approved sales and marketing materials for distribution and performance review. Listed integrations include Dropbox, Box, Google Drive, Microsoft OneDrive, Salesforce, Gmail, Outlook, Zapier, and Base. The Gmail Chrome Extension enables tracked sharing directly from Gmail. Uploads support PDF, PowerPoint, and Word files up to 30 MB, with no stated upload-count limit. The free plan costs nothing for up to three documents and requires no credit card. Attach also advertises a 14-day trial, while plan prices beyond the free offering are not displayed.
For and against
For
- Detailed document engagement analytics
- Password, expiry, and replacement controls
- Central approved-content library
- Many storage, CRM, and email integrations
- Free plan covers three documents
Against
- Uploads are limited to 30 MB each
- Free plan allows only three documents
- Paid plan prices are not displayed
- Support routes through Cirrus Insight
The verdict
Attach combines controlled document sharing, buyer engagement tracking, and a content library for sales workflows. The free plan is limited, but the trial and integrations provide ways to assess fit.
Who it suits
It suits sales representatives, marketers, startups, and sales leaders who need document engagement data and controlled sharing. Teams using the listed storage, CRM, or email services may benefit from its integrations.
Plans and prices
Free
Cloud
Read 15 Oct 2026 · trustradius.com
SOLO
Cloud
Read 15 Oct 2026 · trustradius.com
ADVANCED
Cloud
Read 15 Oct 2026 · trustradius.com
TEAM
Cloud
Read 15 Oct 2026 · trustradius.com
Attach free plan
Free up to 3 documents · No credit card required
Read 30 Sep 2026 · attach.io
On the record
- Access controls
- Documents can be password protected, expired, revoked, download restricted or replaced after sending.attach.io · read 15 Oct 2026
- API and SDK
- Attach's public homepage and help center provide no public API or SDK documentation link.attach.io · read 15 Oct 2026
- Attach relationship
- Inc. says 250,000 people use Cirrus Insight and its sister product Attach.io.inc.com · read 15 Oct 2026
- Authentication
- OAuth 2.0 is used for connected mail and CRM services, and passwords are not stored.cirrusinsight.com · read 15 Oct 2026
- Capterra customer service
- Capterra reports a customer-service score of 3.5 out of 5 from 4 reviews.capterra.com · read 15 Oct 2026
- Chrome extension
- The Gmail Chrome Extension lets users share tracked documents from Gmail.attach.io · read 30 Sep 2026
- Cloud uploads
- Attach lists Dropbox, Box, Google Drive and Microsoft OneDrive as cloud upload sources.attach.io · read 15 Oct 2026
- Company and pricing status
- The Attach pricing and about links redirect to Cirrus Insight pages, and the opened pricing page displays a JavaScript pricing configurator without plan prices.attach.io · read 30 Sep 2026
- Company founding
- Cirrus Insight's official About page says the company was founded in 2011.cirrusinsight.com · read 15 Oct 2026
- Company legal identity
- The official site identifies the maker as Cirruspath, Inc., operating from Raleigh, North Carolina.cirrusinsight.com · read 15 Oct 2026
- Company location listing
- Inc.'s verified profile lists Cirrus Insight's location as Irvine, California.inc.com · read 15 Oct 2026
- Company size
- Inc.'s verified company profile lists Cirrus Insight at 51–200 employees.inc.com · read 15 Oct 2026
- Compatibility
- Attach says recipients can view documents on any device without compatibility issues.attach.io · read 15 Oct 2026
- Content hub
- A centralized library stores approved sales and marketing collateral for team use.attach.io · read 15 Oct 2026
- Document analytics
- Reports show overall content performance, engagement and drop-off.attach.io · read 15 Oct 2026
- Document controls
- Users can password protect documents, disable downloads or viewing, set an expiration date, and delete or replace documents after sending.attach.io · read 30 Sep 2026
- File formats and size
- Uploads accept PDF, PowerPoint (.ppt, .pptx), and Word (.doc, .docx) files up to 30 MB; the FAQ says there is no limit on the number of uploads.attach.io · read 30 Sep 2026
- Gmail extension
- A Chrome extension lets users send tracked documents from Gmail.attach.io · read 15 Oct 2026
