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Head-to-head · AI Email Assistants

Mailbutler Smart Assistant vs Missive

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Mailbutler Smart Assistant #3 in AI Email Assistants 8.6/10 Free plan · 14-day trial Free planFree trial✓ 4 of 5 features Visit Mailbutler
Missive #4 in AI Email Assistants 8.5/10 30-day trial Free trial✓ 0 of 5 features Visit Missive

Mailbutler Smart Assistant leads on 2 checks, Missive on 0, and 5 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMailbutler Smart Assistant · 8.6/10
  • Lowest starting priceMailbutler Smart Assistant · $7/user/mo
  • Free planonly Mailbutler Smart Assistant
  • Free trialboth
  • Most featuresMailbutler Smart Assistant · 4 of 5

Mailbutler Smart Assistant scores higher on our rubric for ai email assistants: 8.6 against 8.5 out of 10; our editors rank them #3 and #4.

Mailbutler Smart Assistant offers free plan; Missive doesn't. Mailbutler Smart Assistant is cheaper to start at $7/user/mo against $14/user/mo.

Mailbutler Smart Assistant is the better fit for affordable email productivity across major platforms. Missive is the better fit for teams coordinating email and other shared communications.

  • Mailbutler Smart Assistant fits best

    Affordable email productivity across major platforms

  • Missive fits best

    Teams coordinating email and other shared communications

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 Mailbutler Smart Assistant 8.6/10 Visit ↗ Missive 8.5/10 Visit ↗
At a glance
Editor score 8.6 8.5
Ranking #3 in AI Email Assistants #4 in AI Email Assistants
Best for Affordable email productivity across major platforms Teams coordinating email and other shared communications
Pricing model Free plan + paid Paid
Starting price $7/user/mo (best) $14/user/mo
Free plan ✓ (best) —
Free trial 14 days 30 days
Free trial length 14 days 30 days · no card needed
Deployment Cloud, Desktop, Mobile, Browser extension Cloud, Desktop, Mobile
Platforms Web, Windows, macOS, Linux, iOS, Android, Chrome extension Web, Windows, macOS, iOS, Android
Integrations 5 integrations 16 integrations
Features Mailbutler Smart Assistant 4/5 · Missive 0/5
Inbox triage ✓ (best) Not checked yet
AI reply drafting ✓ (best) Not checked yet
Automatic sending — Not checked yet
Thread summaries ✓ (best) Not checked yet
Follow-up actions ✓ (best) Not checked yet
Specs
Email platforms Not checked yet Not checked yet
Our review
Pros
  • Drafts keyword-based messages and context-aware replies
  • Summarizes email and identifies actionable tasks
  • Works with Apple Mail, Gmail, and Microsoft Outlook
  • 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.
Cons
  • Smart Assistant requires Smart or Business after the 14-day trial
  • Starter emails carry a visible Mailbutler watermark
  • No automatic email sending
  • 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.
Our verdict

Mailbutler Smart Assistant adds AI drafting, replies, summaries, and task detection to an email productivity toolkit. It is aimed at people who want help composing and organizing email across Apple Mail, Gmail, or Microsoft Outlook,…

Read the review →

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 →
  1. Mailbutler Smart AssistantAI Email Assistants 8.6Free plan · 14-day trial
  2. MissiveAI Email Assistants 8.530-day trial

Strengths and trade-offs

  • Mailbutler Smart Assistant — where it wins

    • Drafts keyword-based messages and context-aware replies
    • Summarizes email and identifies actionable tasks
    • Works with Apple Mail, Gmail, and Microsoft Outlook

    Where it doesn't

    • Smart Assistant requires Smart or Business after the 14-day trial
    • Starter emails carry a visible Mailbutler watermark
    • No automatic email sending
  • 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.
  • Mailbutler Smart Assistant8.6/10 · Free plan · 14-day trial

    A broad email toolkit with AI assistance on Smart and Business plans.

    Visit MailbutlerFull verdict →
  • 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 →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update