vioscale
Comparison

Plivo vs Postmark

On the evidence we track, Plivo leads this comparison with a composite score of 79/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Plivo full profile →Postmark full profile →
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★Plivo79
Postmark63
Score
Vioscale score
Plivo79 / 100medium · 73%updating
Postmark63 / 100low · 49%updating
Pricing
Free tier
Plivo✓
Postmark✓
Model
Plivofreemium
Postmarkfreemium
Price level
Plivolow
Postmarklow
Transparent
Plivo✓
Postmark✓
Integrations
Count
Plivo9
Postmark22
Security
Gdpr
Plivo✓
Postmark✓
Hipaa
Plivo✓
Postmark–
Soc2
Plivo✓
Postmark–
Reliability
Sla pct
Plivo99.99
Postmark–
Status page
Plivo✓
Postmark✓
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for communication apis. “-” means undocumented, not absent.

Channels
SMS
Plivo✓
Postmark-
Voice
Plivo✓
Postmark-
WhatsApp
Plivo✓
Postmark-
RCS
Plivo✓
Postmark-
Transactional email
Plivo✓
Postmark✓
Video / real-time
Plivo-
Postmark-
In-app chat
Plivo✓
Postmark-
Verify / OTP / 2FA
Plivo-
Postmark-
Messaging
Two-way messaging
Plivo✓
Postmark✓
Reach
Geographic coverage
PlivoGlobal
PostmarkGlobal
Delivery
Email deliverability tools
Plivo-
Postmark✓
Commercial
Published per-unit pricing
Plivo✓
Postmark✓

What each one is

The product in its own terms, so the numbers below have context.

Plivo

Leader

A cloud telephony and contact center platform that enables businesses to deploy AI agents and handle customer interactions across voice calls, SMS, WhatsApp, email, and chat through programmable APIs and a unified agent interface.

Independently observed

Postmark

A transactional email platform that sends emails through API and SMTP endpoints, with built-in capabilities for tracking delivery success, handling bounces, and processing inbound messages. Designed for developers who need to integrate email delivery into applications.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Plivo

Leader
from $0.00/moUsage-basedFree tier

Usage-based pricing from $0.0028/min for voice and $0.04/min for AI agents. Plivo CX at $228/year. Free tier includes $10 credits.

  • Voice APIFrom $0.0028/minute
    • Make and receive calls
    • Browser SDK support
    • SIP trunking
  • AI Agents$0.04/minute all-inclusive
    • Conversational voice agents
    • No-code agent builder
  • Plivo CX$228/year
    • Omnichannel analytics
    • Sentiment analysis
    • Unified agent desktop
    • AI-powered insights
as of verify ↗

Postmark

from $1.20/moSubscriptionFree tier

From $15/mo. Free tier with 100 emails/month. Pay-as-you-go overages starting at $1.80 per 1,000 emails.

  • FreeFree
    • 100 emails/month
    • REST API
    • SMTP
    • Transactional email
    • Sandbox Mode
    • +3 more
  • Basic$15/mo + $1.80 per 1,000 overage emails
    • 10,000+ emails/month
    • Industry-leading deliverability
    • 45-day retention
    • 5 custom domains
    • Unlimited emails/day
    • +3 more
  • Pro$16.50/mo + $1.30 per 1,000 overage emails
    • 10,000+ emails/month
    • Industry-leading deliverability
    • Customizable retention up to 365 days
    • 10 custom domains
    • Unlimited emails/day
    • +5 more
  • Platform$18/mo + $1.20 per 1,000 overage emails
    • 10,000+ emails/month
    • Industry-leading deliverability
    • Customizable retention up to 365 days
    • Unlimited custom domains
    • Unlimited emails/day
    • +5 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Plivo✓
Postmark✓
CLI
Plivo✓
Postmark✗
Deployment
Cloud / SaaS
Plivo✓
Postmark✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Plivo

Leader
9 total
  • LiveKit
  • Pipecat
  • OpenAI
  • Google Gemini
  • Deepgram
  • Cartesia
  • ElevenLabs
  • Vapi
  • OpenAI Realtime
Independently observed

Postmark

22 total
  • Mailcoach
  • Datadog
  • Craft CMS
  • Customer.io
  • ActiveCampaign
  • Supabase
  • Bubble
  • Figma
  • Google Sheets
  • Gravity Forms
  • Gravity SMTP for WordPress
  • Netlify
  • Slack
  • Stripe
  • Stripo
  • Typeform
  • WordPress
  • WP Mail SMTP
  • Zapier
  • Tabular
  • SureTriggers
  • Marka Email Generator
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.