Pricing

One flat plan, plus usage for what you send

Cheap email tools leave out features you need, and full CRMs cost more than most small businesses can justify. Stack gives you the whole platform for a flat fee and bills messaging separately at usage rates.

Founder's plan

$97/month

Billed monthly. Switch to yearly anytime.

Start 14-day trial, then $97/mo

$1,000/year

Works out to $83.33 a month, billed once a year.

Start 14-day trial, then $1,000/yr

14 days free · Unlimited users and contacts · Cancel anytime

What's included

CRM, unified inbox and sales pipelines
Email and SMS broadcasts and campaigns (sending billed separately)
Workflow automations
Website, funnel and membership site builder
Calendars and appointment scheduling
Estimates, invoices, contracts and e-signatures
Social planner, reviews and listing management

*WhatsApp, the AI Employee, the branded client portal and a few other premium features are paid add-ons. Usage fees apply to emails, texts and calls.

Usage

Estimate your monthly bill

Drag the sliders to match a typical month. Messaging and calls are billed at the rates below.

Emails5,000

$0.001 per email$5.00

Text message segments500

$0.0119 per 160-character segment$5.95

Outbound call minutes100

$0.021 per minute$2.10

Inbound call minutes100

$0.0128 per minute$1.28

Premium workflow actions1,000

$0.015 per action$15.00

Phone number$3.50/mo

Estimated monthly total$129.83$116.16

Founder's planFounder’s plan (yearly, per month)$97.00$83.33

Usage$32.83

This is an estimate. Phone numbers also have a one-time $23 verification fee. Other services are listed in the table below.

Start your free trial

All usage rates

Service	Rate	$10 gets you about
Email	$0.001 / email	10,000 emails
Outbound calls	$0.021 / min	475 minutes
Inbound calls	$0.0128 / min	780 minutes
Text messages	$0.0119 / segment	840 segments (160 characters each)
Premium workflows	$0.015 / action	665 workflow actions
Email verification	$0.0037 / verification	2,705 emails verified
Content AI	$0.135 / 1,000 words · $0.09 / image	74,075 words or 110 images
Workflow AI	$0.045 / GPT-4/4o run · $0.0225 / GPT-3.5 run	220 GPT-4/4o or 445 GPT-3.5 runs
Voice AI	$0.03 / message · $0.195 / min	335 messages or 50 minutes
WhatsApp	$0.111 / conversation	90 conversations
Reviews AI	$0.12 / response	85 review responses
Domain name	$15 / domain	Doesn’t cover one domain
Address auto-complete	$0.0045 / search · $0.00525 / other	2,220 searches or 1,270 other
Funnel AI	$1.485 / run	6 runs

Add-ons

Optional extras

You can switch these on from your account whenever you want, but none are needed to run a full CRM.

Workflow Pro

$14.99/mo

Includes 10,000 premium workflow executions a month. Extra executions bill at the standard rate.

Branded client portal

$79/mo

Give clients a login under your own brand to see invoices, bookings, courses and messages.

AI Employee

$127/mo

An assistant that can answer routine messages and help your team with day-to-day tasks.

Listings (Yext)

$49/mo

Keep your business name, address and hours consistent across directories and maps.

$29.99/mo

Send and receive WhatsApp messages in the same inbox as your texts and emails.

Dedicated IP

$88.50/mo

Send email from your own IP address to protect your sender reputation at higher volumes.