Unitpost vs Plivo for SMS

Plivo is a communications platform, now led by voice AI agents, with APIs for voice, SIP, SMS, MMS, RCS, WhatsApp and verification. Unitpost sends SMS to 177 countries from the same API, contacts and bill as its email, on paid plans from $10 a month. Across 13 compared capabilities, Unitpost leads on 6 and Plivo leads on 6.

Comparing more than two? Best Plivo alternatives in 2026, ranked with published weights.

Which should you choose?

Choose Plivo if

You already have an Enterprise agreement and want SMS on it
You want free managed one-time codes (Verify with Fraud Shield)
You need voice or voice AI agents alongside SMS
You need short codes or want to port US or Canadian numbers in

Choose Unitpost if

You want to start SMS on a self-serve plan from $10 a month, not an enterprise contract
You send marketing texts and want consent records, quiet hours and STOP handling enforced for you
You want email and SMS on one contact list, one API key and one bill
You want idempotent sends, so a retried request never texts anyone twice

What Plivo does well

Stated plainly, because a comparison that pretends otherwise is not worth reading.

Low US list prices: $0.0077 per segment plus carrier surcharges, with numbers from $0.50 a month
Plivo Verify with no per-verification fee and free Fraud Shield pumping protection
Per-country Geo Permissions with hourly caps, and no charge for blocked messages
Broad stated coverage (226 countries on its SMS page) and short codes
Voice, SIP and voice AI agents on the same account

Pricing and free tier

Unitpost: $0.014 per US text, and a published price for each of 177 countries; SMS is on paid plans from $10 a month, which includes $10 of monthly sending allowance for texts or email. Number and carrier registration fees are passed through at cost.
Plivo: No free tier. $10 of trial credit with no card, texting verified numbers only; Plivo's pricing page lists SMS and Verify under its Enterprise plan, from $1,000 a month. Its US SMS page still lists pay-as-you-go rates per segment plus carrier surcharges. Ask Plivo which applies to a new account.

Plivo pricing and free-tier details last verified 2026-11. Providers change these often — check their pricing page before making a decision.

Feature comparison

Feature and pricing comparison between Unitpost and Plivo
Capability	Unitpost	Plivo
How SMS is sold	Self-serve on paid plans from $10 a month, which includes $10 of sending allowance	Listed under the Enterprise plan from $1,000 a month on the pricing page; pay as you go on the US SMS page
Price of a US text	$0.014 per segment, carrier fees included	$0.0077 per segment plus carrier surcharges of up to $0.005
Countries	177 countries	226 countries (its SMS page)
Numbers	New toll-free and 10DLC numbers in the US, local numbers in Canada, Sender IDs where a country allows them; no porting	Long codes, toll-free and short codes; Sender IDs on approval; porting in for the US and Canada
Email	Transactional, marketing and inbound email on the same contacts, templates and bill	No email API
Marketing text compliance	Enforced on every send: consent on record per contact, recipient-local quiet hours for marketing, STOP and HELP handled, double opt-in by text, a content check before a sender's first send	STOP and HELP handled by default on US and Canadian long codes and toll-free numbers; consent records and quiet hours are left to you
Contacts, segments and campaigns	SMS templates, topics, segments and scheduled campaigns in the product, shared with email	A message API that takes several recipients per request; no scheduling, contact lists or campaigns documented
Two-way texting	Replies to numbers in the United States and Canada arrive as an sms.received webhook, 1¢ per received text	Two-way SMS via webhook
One-time codes	Send codes through the SMS or email API and check them yourself. No managed verification API	Plivo Verify: no per-verification fee (you pay the channel), with Fraud Shield and voice fallback
Idempotent sends	Idempotency-Key on sends, 24-hour dedupe window, on SMS as on email	No idempotency key on message sends
SMS pumping protection	On by default: texts reach only the countries we offer, with fraud filtering and per-workspace limits on new destinations	Geo Permissions per country with hourly caps; Fraud Shield on Verify
MCP server for AI agents	Hosted, with every SMS and email operation as a tool and OAuth sign-in	Hosted, but it only searches Plivo's docs and cannot send
Track record	New. SMS has been in production since October 2026	Years of production SMS and voice

How do I switch from Plivo?

There is no one-key import from Plivo, and Unitpost doesn't port numbers in. You get new numbers or Sender IDs, and in the US you register your brand and campaign with Unitpost (10DLC or toll-free verification), which the carriers review before you can send.

Import your contacts with their phone numbers and record the consent you already hold, opt-outs included, so nobody who texted STOP to your Plivo number hears from the new one.

Then change the send call to POST /sms and point delivery callbacks at Unitpost webhooks (sms.sent, sms.delivered, sms.failed; replies arrive as sms.received). Keep Plivo sending until the new sender is approved and live.

Read the SMS docs

Frequently asked questions

Is Plivo SMS enterprise-only now?

Plivo's pricing page lists SMS and Verify under its Enterprise plan, which starts at $1,000 a month, while its US SMS pricing page still shows pay-as-you-go rates. Ask Plivo which applies before you plan around it. On Unitpost, SMS is self-serve on any paid plan.

Is Plivo cheaper than Unitpost for SMS?

Per US text, on its pay-as-you-go list price, yes: $0.0077 per segment plus carrier surcharges, against $0.014 per segment on Unitpost with carrier fees included. If your account falls under Plivo's Enterprise plan, the $1,000 monthly minimum changes that math for anyone sending fewer than tens of thousands of texts a month.

Does Unitpost have something like Plivo Verify?

No. Unitpost has no managed verification API. You generate the code, send it with the SMS or email API, and check it yourself. If you want codes, fallback and fraud checks managed for you, Plivo Verify is the better fit.

Switching from Plivo?

Start with email on the free tier

Then add SMS on any paid plan from $10 a month, on the same API key and contacts.

Start for free Explore the docs