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Head-to-head · AI Email Assistants

Missive vs Spike

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Missive #4 in AI Email Assistants 8.5/10 30-day trial Free trial✓ 0 of 5 features Visit Missive
Spike #8 in AI Email Assistants 7.9/10 Free plan Free plan✓ 0 of 5 features Visit Spike

Missive leads on 0 checks, Spike on 2, and 0 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMissive · 8.5/10
  • Lowest starting priceSpike · $4/user/mo
  • Free planonly Spike
  • Free trialonly Missive

Missive scores higher on our rubric for ai email assistants: 8.5 against 7.9 out of 10; our editors rank them #4 and #8.

Spike offers free plan; Missive doesn't. Spike is cheaper to start at $4/user/mo against $14/user/mo.

Missive is the better fit for teams coordinating email and other shared communications. Spike is the better fit for low-cost email and calendar workspace.

  • Missive fits best

    Teams coordinating email and other shared communications

  • Spike fits best

    Low-cost email and calendar workspace

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Missive 8.5/10 Visit ↗ Spike 7.9/10 Visit ↗
At a glance
Editor score 8.5 7.9
Ranking #4 in AI Email Assistants #8 in AI Email Assistants
Best for Teams coordinating email and other shared communications Low-cost email and calendar workspace
Pricing model Paid Free plan + paid
Starting price $14/user/mo $4/user/mo (best)
Free plan — ✓ (best)
Free trial 30 days —
Deployment Cloud, Desktop, Mobile Cloud, Desktop, Mobile
Platforms Web, Windows, macOS, iOS, Android Web, Windows, macOS, iOS, Android
Support Email, Docs Email, Live chat, Docs
Integrations 16 integrations 12 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Missive 0/5 · Spike 0/5
Inbox triage Not checked yet Not checked yet
AI reply drafting Not checked yet Not checked yet
Automatic sending Not checked yet Not checked yet
Thread summaries Not checked yet Not checked yet
Follow-up actions Not checked yet Not checked yet
Specs
Email platforms Not checked yet Not checked yet
Our review
Pros
  • Shared inboxes add assignments, comments, mentions, and collaborative drafting.
  • Rules, automations, scheduled sending, and follow-ups support repeatable workflows.
  • AI tools, calendar features, integrations, and API access extend email work.
  • Chat-style threads and a unified inbox organize multiple email accounts.
  • AI drafting and conversation summaries are available on free plans.
  • Calendar tools, notes, tasks and calls sit alongside email.
Cons
  • There is no ongoing free plan after the 30-day trial.
  • Integrations, automations, analytics, and API access start with Productive.
  • SAML and SSO, IP restriction, and advanced reporting require Business.
  • The free Email App plan limits unified inbox use to one email address.
  • The $4 Team plan and $6 Pro plan serve different product offerings.
  • Video call recording and SAML-SSO are marked SOON on Business.
Our verdict

Missive brings team and personal inboxes together with email, SMS, and social accounts, giving support, sales, agency, and other business teams a shared place to coordinate communication. Teammates can assign conversations, add internal…

Read the review →

Spike combines email, calendar tools and collaboration features in a chat-style workspace. It is aimed at individuals who want to manage existing email accounts in one app, as well as teams that need shared inboxes and team spaces. AI…

Read the review →
  1. MissiveAI Email Assistants 8.530-day trial
  2. SpikeAI Email Assistants 7.9Free plan

Strengths and trade-offs

  • Missive — where it wins

    • Shared inboxes add assignments, comments, mentions, and collaborative drafting.
    • Rules, automations, scheduled sending, and follow-ups support repeatable workflows.
    • AI tools, calendar features, integrations, and API access extend email work.

    Where it doesn't

    • There is no ongoing free plan after the 30-day trial.
    • Integrations, automations, analytics, and API access start with Productive.
    • SAML and SSO, IP restriction, and advanced reporting require Business.

  • Spike — where it wins

    • Chat-style threads and a unified inbox organize multiple email accounts.
    • AI drafting and conversation summaries are available on free plans.
    • Calendar tools, notes, tasks and calls sit alongside email.

    Where it doesn't

    • The free Email App plan limits unified inbox use to one email address.
    • The $4 Team plan and $6 Pro plan serve different product offerings.
    • Video call recording and SAML-SSO are marked SOON on Business.
  • Missive8.5/10 · 30-day trial

    Missive combines shared inbox workflows with AI tools, starting at $14 per user monthly when billed annually.

    Visit MissiveFull verdict →
  • Spike7.9/10 · Free plan

    Spike brings AI email tools, calendar features and team collaboration into one workspace.

    Visit SpikeFull verdict →

More comparisons

All AI email assistants comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update