Spike

Spike brings email, calls, notes, tasks, and to-dos into one hub. It presents email threads as chat-like conversations and includes a unified inbox, scheduled sending, and calendar tools. Spike AI can draft messages and replies, summarize conversations, and act as an assistant; the free tiers list 10 queries for several AI features. Teamspace adds channels, shared inboxes, groups, collaborative documents and tasks, and audio and video meetings. Spike works with existing accounts from Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo, and other IMAP providers. Its calendar feature names Google Calendar, Outlook, and Apple Calendar, while cloud attachments can use Google Drive, Dropbox, or OneDrive. It is available on Android, iOS, macOS, web, and Windows. A Free plan is available; paid plans start at $4/user/mo (annual). Free email accounts have 60 days of search history, 1 GB storage, and a 30 MB file upload limit. Spike says messages use AES-256 encryption and that it is ad-free.

Spike combines email tools with AI features and team collaboration across desktop, web, and mobile platforms. Compare its separate email and Teamspace plans, since their storage, search, and account limits vary.

Spike suits people who want to organize existing email accounts and manage multiple inboxes, as well as teams that need shared workspaces and collaboration tools.

Spike is an email client and collaboration workspace for people who want AI tools and shared work features alongside their messages. It is a strong fit for managing existing accounts or coordinating with a small team, but its separate plans have different limits. The main decision is whether you need an Email App or a Teamspace.

Overview

Spike connects existing Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo and other IMAP accounts, with a unified inbox and chat-like email threads. Scheduled sending and calendar tools add everyday email conveniences; calendar connections include Google Calendar, Outlook and Apple Calendar, while Google Drive, Dropbox and OneDrive support cloud attachments.

Spike AI can draft messages and replies, summarize conversations and act as an assistant. That can help with routine inbox work, though free tiers allow 10 queries for several AI features. Spike says it encrypts messages with AES-256 and a private key for each message, and undergoes periodic external security audits; it identifies Bishop Fox as the firm behind an independent audit. It is ad-free and says it does not sell or monetize user data, while allowing non-personal data to be used to improve its service.

Key features

Email and AI

The Email App is for people improving an existing email setup or bringing multiple accounts together. Its free plan supports one address, but 60 days of search history and 1 GB of storage make it better for light use than as a long-term archive. Paid plans raise the address cap and storage, with Pro supporting three addresses and Ultimate allowing unlimited addresses.

Team collaboration

Teamspace is designed for teams creating a new address and working together. It combines channels, shared inboxes, groups, collaborative docs and tasks, and audio and video meetings. That breadth makes it more than a shared mailbox, but the free tier's three-member and one-teamspace caps limit its fit for growing teams.

Pricing

Spike has separate Email App and Teamspace plans, so compare the limits that match your work rather than treating the plans as interchangeable. The listed annual-billing prices are:

• Email App Free: free; one email address, 60 days of search history, 1 GB storage, 30 MB file uploads and 1:1 video calls. It suits basic use, but the storage and search caps constrain heavier inboxes.
• Email App Pro: $6 a month (billed annually); up to three addresses, unlimited search history, 5 GB storage, 100 MB uploads and priority support. It suits people who need more accounts and searchable history, though 5 GB remains a modest storage allowance.
• Email App Ultimate: $12 a month (billed annually); unlimited addresses, unlimited search history, 20 GB storage, 1 GB uploads and VIP support. This is the better fit for many accounts or larger attachments, at twice Pro's price.
• Teamspace Starter: free; up to three members, one teamspace, 60 days of search history, 15 GB storage per member and 15 MB uploads. It provides a no-cost way for a small group to start, but the member, workspace, search and upload limits are restrictive.
• Teamspace Team: $4 a month (billed annually), per member; unlimited search history, 100 GB storage per member, 100 MB uploads, a shared inbox and a free custom email domain for one year. It fits teams needing shared email and more room, though the per-member price scales with headcount.
• Teamspace Business: $8 a month (billed annually), per member; 1 TB storage per member, 500 MB uploads and VIP support. Video call recording and SAML-SSO are marked “SOON,” so they should not be treated as current inclusions.

The free tiers have no trial period; paid Email App and Teamspace options are presented with annual billing. Standard support comes with Starter, priority with Team and Pro, and VIP with Business and Ultimate.

Platforms

Spike is available on Android, iOS, macOS, web and Windows, giving it broad coverage across phone, desktop and browser use.

Who it's for

Choose the Email App if you want to keep your existing provider accounts while consolidating them, using AI assistance or adding calendar tools. Choose Teamspace if your priority is a new team address and collaboration around shared inboxes, tasks, docs and meetings. It is less compelling if you need generous free email storage or a single plan that combines all account and team limits.

Pros and cons

• Pro: Existing accounts from major providers and other IMAP services can sit in a unified inbox, making Spike useful for people juggling addresses.
• Pro: AI drafting and summaries sit alongside calendar tools and scheduled sending, covering more than message reading alone.
• Pro: Teamspace adds shared inboxes, channels, collaborative docs and tasks, and meetings for teams that want collaboration in the same workspace.
• Con: The free Email App's 1 GB storage and 60-day search history can make it a poor fit for users who retain substantial correspondence.
• Con: Email App and Teamspace have distinct limits and per-user or per-member pricing, so matching the right plan takes care.
• Con: Some Business and Ultimate capabilities, including recording and SAML-SSO, are marked “SOON” rather than included as current features.

Alternatives

For other approaches, browse AI Email Assistants, AI Personal Assistants and Email clients.

• Perplexity is a freemium option with limited daily use on its free plan and a $20 a month Pro plan; consider it when that pricing and usage structure better suits your needs.
• Mailbutler Smart Assistant is another freemium option with a free trial, for readers comparing email-assistant software.
• Fyxer is a paid option with a free plan and trial; its Starter plan is $22.50 a month billed annually for one inbox and one calendar, making it an alternative to compare if that setup fits.
• Spark +AI offers a free plan with unlimited email accounts, Smart Inbox, notifications and calendar, so it is worth considering if account breadth is the priority.
• Serif is a paid alternative with a $30 a month Lite plan that includes meeting recording, task management, a knowledge base, AI, and email triage and drafting.
• Superhuman Go has a free plan with inline suggestions, chat with tabs and apps, editable shareable docs and synced conversations; consider it for those tools in a freemium option.
• Mailtwine offers free beta access with all features and no plan limits, with paid-plan pricing to be announced before launch.
• Shortwave is a freemium alternative with a free trial; its Business plan is $30 a month per seat and includes five years of AI search history, which may suit readers comparing AI-focused email search.

Verdict

Spike is best for people who want to bring existing email accounts together or small teams that need shared inboxes and collaboration tools in one workspace. Its range of AI, email and team features is the clearest reason to choose it. Look elsewhere if low-cost, generous email storage is the priority, or if you want to avoid choosing between separate Email App and Teamspace plans.