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Spike

Your Inbox, Reinvented·spikenow.com

Spike is an AI-powered email platform that turns a traditional inbox into a unified, chat-style workspace. It combines email, team messaging, shared inboxes, collaborative docs, tasks, calendar, and video meetings in one feed, and lets people who don't use Spike still receive normal emails while collaborating with Spike users. It works across mobile, desktop, and web, and offers an email intelligence API for powering AI agents and automations with email context.

What it's for

Managing multiple email accounts in one unified inboxTurning email threads into chat-like conversationsCollaborating on shared team inboxes for customer supportCreating and editing collaborative docs and notes from the inboxTracking tasks and to-dos inside the inboxHosting video and audio meetings without external linksCreating dedicated channels and groups for team and client discussionsHosting a custom business email domainSearching across emails, files, and notes instantly

Features 20

AES-256 message encryption
Built-in translation
Calendar sync with Google Calendar, Outlook, Apple Calendar
Channels for public team discussions
Cloud file attachment from Google Drive, Dropbox, OneDrive
Collaborative docs and notes with real-time editing
Collaborative tasks and to-do lists
Conversational, chat-style email threads
Custom email domain / email hosting
Groups for private chats with internal and external contacts
Instant unsubscribe from mailing lists
One-click audio and video meetings
Priority inbox that sorts important messages first
Shared inbox for team collaboration on customer emails
Snooze and reminders
Spike AI for message drafting and summarization
Super Search across emails, files, and notes
Undo Send and Send Later scheduling
Unified inbox across multiple email accounts
Voice messages

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb, Windows, macOS, iOS, Android

ForFounders, Consultants, Freelancers, Project Managers, Sales Teams, Remote Teams, Customer Support teams, Agencies, HR teams, small teams, individuals

CompanySpike, Inc. · 2014

Integrations

GmailOutlookGoogle CalendarApple CalendarGoogle DriveDropboxOneDriveWhatsApp

Resources

Docs

Pricing

All paid plan prices are shown as a per-member or per-user monthly rate but are billed annually; no separate monthly-only pricing is shown. The pricing page presents two parallel plan structures — a team/teamspace set (Starter, Team, Business, priced per member) and an individual set (Free, Pro, Ultimate, priced per user) — it is unclear whether these are alternate names for the same tiers or distinct offerings.

StarterFree

Teamspace plan tier for small teams.

Up to 3 members, 60 days search history, 15 GB storage space

Team$4/user/mo · billed annually

Teamspace plan tier, billed annually.

100 GB storage space per member, unlimited search history

Business$8/user/mo · billed annually

Teamspace plan tier, billed annually.

1 TB storage space per member, large file upload of 500 MB

FreeFree

Individual plan tier.

1 email address, 1 GB storage, file uploads up to 30 MB, 60 days search history

Pro$6/user/mo · billed annually

Individual plan tier, billed annually.

Up to 3 email addresses, 5 participants per video call, 5 GB storage, file uploads up to 100 MB

Ultimate$12/user/mo · billed annually

Individual plan tier, billed annually.

Unlimited email addresses, 10 participants per video call, 20 GB storage, file uploads up to 1 GB