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Terasu vs Shipmail

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Terasu compared with Shipmail
DetailTerasu logo TerasuShipmail logo Shipmail
What it doesEvery client project, in plain sight. Business email hosting with calendars, newsletters, and booking pages on your own domain
StageMVP Startup
FoundedNot given 2026
Based inJP PT
Pricing modelFreemium Free trial
PricingFree: $0/month (2 users, 3 rooms, 500MB storage). Solo: $35/month (1 seat, 10 rooms, 5GB storage). Starter: $69/month (3 users included, +$15 per additional user, 30 rooms, 10GB storage). Business: $199/month (10 users included, +$19 per additional user, unlimited rooms, 50GB storage). Enterprise: C Solo $4/mo (2 mailboxes), Pro $9/mo (4 mailboxes), Team $29/mo (12 mailboxes), Scale from $2.50/mailbox for the first 50 mailboxes. 14-day free trial on all plans. Add-ons: 100,000 newsletter sends $20/mo or $200/yr, 1,000,000 newsletter sends $149/mo or $1,490/yr.
Key features
  • Rooms: shared spaces per project with files, conversations, notes, tasks, and decisions
  • File tracking: see which clients opened files and which pages they read
  • Decision timeline: trace agreements over time with original source records
  • Zoom integration: automatic transcript recording and saving to Rooms
  • AI agent with approval: drafts responses, reminders, and reports before human review
  • Task management: assign tasks with due dates to both team and client
  • Slack and LINE sync: messages sync between Room and external chat apps
  • Analytics: view logs, engagement reports, and AI-powered project health scoring
  • Stakeholder map: visualize project relationships with roles and influence
  • Permission controls: choose what clients see and what stays internal per page
  • Calendar with CalDAV sync to phone and laptop
  • Booking pages with automatic meeting links
  • Zoom and Google Meet integration
  • Shared inboxes for team collaboration
  • Newsletters with send limits and subscriber tracking
  • Email API and SDKs for transactional email
  • IMAP and SMTP support for any email client
  • Up to 50 custom domains per organization
  • AI assistant in mailbox for writing and drafting
  • Catch-all addresses for domain email routing
What makes it different
  • AI answers questions from Room records with citations to original sources
  • Clients join with one click from invitation email; no account creation required
  • Works alongside existing tools like Backlog and kintone without migration
  • File view tracking shows client engagement and helps spot stalled projects
  • All client-facing messages and reports require human approval before sending
  • All features in every plan regardless of tier
  • Includes calendar and booking pages without separate tools
  • Unified billing for email, calendar, and newsletters
  • Pay per mailbox, not per user
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)8 +1 (up) since last check32 no change since last check
Trust Flow (Majestic)013
Citation Flow (Majestic)1732
Referring domains (Majestic)7111

7 details filled in for both companies.

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