Spike vs Superhuman Mail

Spike

• People who prefer chat-style conversations to long email threads
• Small teams that want email, chat, notes and calls in one app
• Managing several email accounts from a single inbox

Superhuman Mail

• People on Gmail or Outlook who work through a high volume of email
• Teams that want to share and comment on threads instead of forwarding them
• Sales teams on HubSpot, Salesforce or Pipedrive (Business plan and up)

Spike

• The free Email App plan handles 1 email address and searches only the last 60 days.
• Free plans allow 10 queries per AI feature, and the AI Feed of unread-mail summaries needs a paid plan.
• Shared Inbox, connecting your own domain and the WhatsApp integration need the Teamspace Team plan or higher.
• Apps are listed for Android, iOS, Windows and Mac, plus a web app. No Linux app is listed.

Superhuman Mail

• There is no free plan, and the pricing page does not mention a free trial.
• Built for Gmail and Outlook accounts; the vendor lists no other email providers.
• Auto Drafts, Ask AI and the HubSpot, Salesforce and Pipedrive integrations are not included in Starter.
• Starter and Business stop at 25 seats; single sign-on and SCIM are Enterprise only.

Spike

Conversational email

Threads are shown as chat-like conversations grouped by person. People who do not use Spike receive a regular email.

Unified and Priority Inbox

Connect several email accounts to one inbox, with important messages sorted first. The free Email App plan takes 1 address, Pro takes 3 and Ultimate is unlimited.

Spike AI

Generates messages and replies with context, summarizes long threads and translates. Free plans get 10 queries per AI feature, and paid plans are unlimited.

Channels, groups and Shared Inbox

Teamspace adds public channels, private groups that outside guests can join, and from the Team plan a Shared Inbox for handling team email together.

Notes, tasks and calendar

Collaborative notes and tasks live in the inbox and can be shared with guests, next to a unified calendar that syncs work and business calendars.

Video and audio calls

Calls start from a conversation, and people without Spike can join by link with no app to install. Free plans are limited to 1:1 calls.

Superhuman Mail

Split Inbox

Divides the inbox into separate tabs, for example mail from teammates, VIPs or specific tools, so each stream can be worked through on its own.

Keyboard shortcuts and Snippets

Most actions have a keyboard shortcut, and Snippets insert saved phrases, paragraphs or whole emails as you type.

Superhuman AI

Write with AI, Instant Reply, Auto Summarize and Auto Labels are on every plan. Auto Drafts, Ask AI and the Mail MCP server need Business or Enterprise.

Reminders, snooze and send later

Set a follow-up reminder that fires if nobody replies by a chosen time, snooze threads until they are needed and schedule when a message is sent.

Shared conversations and comments

Share a live view of a thread with teammates, comment on it, work on shared drafts and see when a colleague is already replying.

Calendar and scheduling

See the day's or week's calendar next to an email, create events, share availability and send booking links, with Zoom, Google Meet and Microsoft Teams links.

Spike

• Email App Free$0

  Smart Inbox for 1 email address, 1:1 video calls, 60 days of search history, 1 GB of storage in notes and tasks, and 10 queries per AI feature.

• Teamspace Starter$0

  Up to 3 members with @spike.team addresses, 1 teamspace, 15 GB of storage per member and 60 days of search history.

• Teamspace Team$4

  per member / month, billed annually ($5 billed monthly)

  Custom email domain, unlimited search history, 100 GB of storage per member, Shared Inbox and unlimited Spike AI.

• Email App Pro$6

  per user / month, billed annually ($8 billed monthly)

  Unified inbox for up to 3 email addresses, unlimited search history, 5-person video calls, 5 GB of storage and unlimited Spike AI.

• Teamspace Business$8

  per member / month, billed annually ($10 billed monthly)

  Everything in Team with 1 TB of storage per member, 500 MB file uploads, calls for up to 50 people and VIP support.

• Email App Ultimate$12

  per user / month, billed annually ($16 billed monthly)

  Unlimited email addresses, 10-person video calls, 20 GB of storage, 1 GB file uploads and VIP support.

Superhuman Mail

• Starter$25

  per member / month, billed annually ($30 billed monthly)

  Split Inbox, Snippets, core AI writing and summaries, calendar and booking links, and team sharing. Up to 25 seats.

• Business$33

  per member / month, billed annually ($40 billed monthly)

  Everything in Starter, plus Auto Drafts, Ask AI, the Mail MCP server, CRM integrations and Recent Opens. Up to 25 seats.

• EnterpriseCustom

  Everything in Business, plus single sign-on, SCIM provisioning, audit logs, team analytics and unlimited seats.

Spike

• Annual discount

  Save 20% to 25% with yearly billing

  Teamspace Team is $4 per member / month billed annually against $5 monthly, a 20% saving. Email App Pro is $6 against $8 and Ultimate $12 against $16, which the page labels as 25% off.

• Other savings

  Free custom domain for a year on annual plans

  An annual Teamspace Team or Business subscription includes a new custom email domain free for 1 year, on extensions such as .net, .org and .co.uk.

Superhuman Mail

• Annual discount

  17% off with annual billing

  The pricing page shows 17% off for annual billing: Starter is $25 per member a month billed annually against $30 billed monthly, and Business is $33 against $40.