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Customer Support · head to head

Missive vs Seamless.AI

Missive logo

Missive

Customer Support

Team inbox and chat for productive teams

From
Free
Free plan
Yes
Full reviewWebsite
Seamless.AI logo

Seamless.AI

CRM

Sales lead search engine for finding contact and company data

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Missive each plan caps users rather than only pricing them, at 5 on Starter and 50 on Productive; Seamless.AI pro and Enterprise pricing is not published and requires contacting sales.
  • They diverge on capability: Missive covers Shared inbox, Seamless.AI covers Contact search.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Missive and Seamless.AI actually diverge.

Attributes where Missive and Seamless.AI differ
AttributeMissiveSeamless.AI
Pricing modelsubscriptionfreemium
PlatformsWeb, Ios, Android, Mac, Windowsweb, api
CategoryCustomer SupportCRM
Founded2015Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Missive

  • Shared inbox
  • Team chat
  • Email
  • Tasks
  • Calendar
  • WhatsApp
  • SMS
  • Asana

Only in Seamless.AI

  • Contact search
  • Real-time search engine
  • Job change alerts
  • Buyer intent data
  • CRM and API integrations
  • Enterprise security

What people use each for

The jobs each tool is most often brought in to do.

Missive

  • Shared team inbox across email, SMS and social messagesnot Seamless.AI
  • Collaborating on customer conversations with internal comments and tasksnot Seamless.AI

Seamless.AI

  • B2B sales teams building prospecting listsnot Missive
  • Finding verified emails and phone numbers for outreachnot Missive
  • Tracking job changes among target contactsnot Missive
  • Identifying accounts showing buyer intentnot Missive

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Missive

  • Each plan caps users rather than only pricing them, at 5 on Starter and 50 on Productive
  • Integrations, automation rules and API access all require the Productive plan at $24 per user per month
  • Rules are capped at 1,000 per workspace even on the paid tiers
  • SAML SSO and IP restriction are Business only at $36 per user per month
  • AI features need either Missive AI credits or a bring your own key arrangement rather than being included

Seamless.AI

  • Pro and Enterprise pricing is not published and requires contacting sales.
  • Free plan is limited to just 50 credits and a single user.
  • Data accuracy for contact details can vary and requires verification before outreach.
  • Credit-based usage model means heavy prospecting can exhaust allotments quickly.

Pricing, plan by plan

Missive

Free
  • FreeFree
    • 3 users
    • Basic features
    • Email & chat
  • Starter$14/month
    • Unlimited users
    • Shared inboxes
    • Rules & automation
  • Productive$18/month
    • Starter + Calendars
    • WhatsApp
    • SMS
  • Business$26/month
    • Productive + API
    • SAML SSO
    • Priority support

Seamless.AI

Free
  • FreeFree
    • 1 user
    • 50 credits
    • Email and cell phone search
  • Pro$undefined/mo
    • Per-user pricing
    • Unlimited exports
    • Annual credit packages
  • Enterprise$undefined/mo
    • Unlimited users
    • Custom credit allotments
    • Dedicated success manager

Which should you pick?

Choose Missive if

  • You need shared inbox.
  • You want to start without paying.
  • You work on Web, Ios, Android, Mac, Windows.
  • You also want team chat.
Missive review

Choose Seamless.AI if

  • You need contact search.
  • You want to start without paying.
  • You work on web, api.
  • You also want real-time search engine.
Seamless.AI review

Questions people ask

Is Missive or Seamless.AI better?
Neither clearly leads. Missive starts at Free and Seamless.AI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Missive or Seamless.AI?
Missive starts at Free and Seamless.AI at Free.
Does Missive or Seamless.AI run on more platforms?
Missive runs on Web, Ios, Android, Mac, Windows. Seamless.AI runs on web, api.
Can I use Missive for free?
Both have a free tier, so you can try either at no cost before committing.
What is Missive best used for?
Missive is most often used for shared team inbox across email, sms and social messages, collaborating on customer conversations with internal comments and tasks. Of those, shared team inbox across email, sms and social messages and collaborating on customer conversations with internal comments and tasks are not what Seamless.AI is typically brought in for.
What can Missive do that Seamless.AI cannot?
Missive covers Shared inbox, Team chat, Email, Tasks. Seamless.AI covers Contact search, Real-time search engine, Job change alerts, Buyer intent data.

Answered from the vendors’ own pages

Missive: How much does Missive cost per month?

Missive charges $14/user/month for Starter (up to 5 users), $24/user/month for Productive (up to 50 users), and $36/user/month for Business (unlimited users).

Source
Seamless.AI: Is there a free plan, and what are its limits?

Yes, the Free plan includes 1 user and 50 credits, with access to email and cell phone search, real-time search, and API access.

Source
Missive: Is there a free trial available?

Yes, Missive offers a 30-day free trial with no credit card required to start.

Source
Seamless.AI: How is usage metered on Seamless.AI?

Seamless.AI uses a credit system where credits are consumed to research contact details; paid Pro plans start with larger annual credit packages than the Free plan.

Source
Missive: Does Missive offer yearly billing discounts?

Yes, Missive provides a 20% discount for yearly billing compared to monthly pricing on all plans.

Source
Seamless.AI: Does Seamless.AI have an API?

Yes, API access is included even on the Free plan, alongside export and integration capabilities on paid plans.

Source
Missive: Which plan includes SSO authentication?

The Business Plan at $36/user/month includes SAML SSO, IP restriction, and advanced analytics features.

Source
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