Letterbook
Omnichannel customer support platform with AI agent assistance for ticket triage, assignment, and resolution.
≈ 15visits/mo
Emerging · estimate, read 2026-09-19
- For
- Support teams handling customer tickets across email, Discord, and other channels
- Price
- Free plan · From $50/mopricing page, read 2026-09-20
- Activity
- Actively maintainednothing dated on the site
- Company
- founding year not on record
- Runs as
- API
- resolve billing and refund requests with AI assistance
- triage and auto-assign support tickets to team members
- integrate customer data from Stripe and databases for full context
- #7
Intercom
Helpdesk and AI agent that handles customer support conversations across email, chat, phone, and other channels.
71.3knot readFrom $19/user/mo2011 - #8
Front
Coordinates customer support across teams and channels with AI assistance for complex requests.
79.2knot readFrom $25/user/mo2013 - #17
Assembled
Manages support staff scheduling, forecasting, and routing across human agents, AI agents, and outsourced vendors.
48.6knot readContact sales2020 - #37
Filum AI
Consolidates messages from multiple channels into one inbox and deploys AI agents to handle sales, support, and customer interactions.
3ActiveFrom $29/mo2020 - #48
VerbaFlo
Automates resident and prospect conversations across calls, chat, email, and SMS for real estate operators.
5Active— - #64
Heep.ai
Answers missed restaurant calls, takes reservations, and manages customer messages across WhatsApp, Instagram, and email.
31not readFrom €99/mo
What is Letterbook?
Omnichannel customer support platform with AI agent assistance for ticket triage, assignment, and resolution.
Who is Letterbook for?
Support teams handling customer tickets across email, Discord, and other channels
How much does Letterbook cost?
Letterbook has a free plan; paid plans start at $50/mo, per its pricing page on 2026-09-20.
Do people use Letterbook?
Emerging: ≈ 15 visits a month · estimate, 2026-09.
Is Letterbook still maintained?
Actively maintained.
What are alternatives to Letterbook?
In Support, by use: Intercom, Front, Assembled, Filum AI, VerbaFlo, Heep.ai.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one row at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.