Brandwave

Klaviyo vs Postscript:Which is more popular?

In September 2026, Klaviyo had more branded searches than Postscript among SMS marketing platforms worldwide. Klaviyo had about 304,000 branded searches, while Postscript had 49,500. Klaviyo made up 31.2% of all SMS marketing platform searches we track, and Postscript accounted for 5.1%. When we asked ChatGPT and Google AI Overviews about SMS marketing platforms, Klaviyo appeared in four of the five answers and Postscript in three. Klaviyo was mentioned before Postscript in every answer that named either.

Among SMS marketing platforms worldwide in September 2026

Who do people search for more?

Klaviyo, about 6 searches for every 1 for Postscript

Klaviyo 304K searchesPostscript 49.5K searches

Who does AI mention more?

Klaviyo, mentioned in 4 of 5 answers, Postscript in 3

Klaviyo in 4 of 5Postscript in 3 of 5

Who does AI recommend more?

Klaviyo, named ahead of Postscript in 4 of 4 answers

Klaviyo first in 4Postscript never first

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Top SMS marketing platforms in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Klaviyo was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Postscript was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Klaviyo was listed before Postscript in every answer that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. SimpleTexting1st
  2. Klaviyo2nd
  3. SlickText3rd
  4. Postscript4th
  5. EZ Texting5th
  6. Attentive6th
  7. Textla7th
  8. Textmagic8th
  9. Twilio9th
  10. Textedly10th

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • SimpleTexting5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Klaviyo4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • EZ Texting4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Attentive4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Postscript3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • SlickText3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Twilio2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Textla2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Textmagic1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Textedly1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers

See every answer about SMS marketing platforms

5 answers

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Is Klaviyo or Postscript more popular in search?

This chart shows how often people search Google for Klaviyo and Postscript by name. Each line represents a brand's share of searches for all ten SMS marketing platforms we track, month by month, from English-language searches worldwide.

Klaviyo and Postscript among SMS marketing platforms worldwide, by month

Share of searches by month for Klaviyo, Postscript. The figures are in the table below the chart.

View monthly share of searches table
MonthTwilioKlaviyoPostscriptSimpleTextingTextmagicEZ TextingTextedlySlickTextTextlaAttentive
Oct 202560.1%27.3%4.4%2%2.4%1.6%0.88%0.72%0.32%0.22%
Nov 202555.8%30.9%5%2.3%2.5%1.5%0.82%0.67%0.29%0.22%
Dec 202554.1%29.9%6%2.7%3%1.8%0.97%0.97%0.35%0.25%
Jan 202655.3%30.6%5%2.7%2.3%1.8%0.99%0.81%0.29%0.25%
Feb 202656.4%31.2%4.2%2.3%2.3%1.5%0.83%0.68%0.37%0.22%
Mar 202660.4%27.4%4.4%2%2%1.6%0.89%0.73%0.32%0.2%
Apr 202661.1%27.6%3.7%2%2.1%1.6%0.73%0.73%0.26%0.19%
May 202661.5%27.8%3.7%2%1.7%1.4%0.74%0.6%0.4%0.19%
Jun 202661.6%27.8%3.7%2%1.7%1.4%0.6%0.6%0.33%0.2%
Jul 202662.3%28.1%3.1%2.1%1.7%1.1%0.61%0.61%0.27%0.19%
Aug 202661.3%27.7%4.5%2%1.7%1.1%0.6%0.6%0.33%0.15%
Sep 202656.5%31.2%5.1%2.3%1.9%1.2%0.68%0.55%0.37%0.17%

How has the Klaviyo and Postscript comparison changed over the last 12 months?

3 findings
  • Klaviyo was ahead of Postscript in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Klaviyo’s share of searches among SMS marketing platforms worldwide moved from 27.3% to 31.2%, and its estimated monthly branded searches moved from 306K to 304K.
  • Across the 12 months ending September 2026, Postscript’s share of searches among SMS marketing platforms worldwide moved from 4.4% to 5.1%, and its estimated monthly branded searches held steady at 49.5K.

How did search popularity change for SMS marketing platforms worldwide in September 2026?

2 changes

  1. In September 2026, Klaviyo gained share of searches among SMS marketing platforms worldwide, from 27.7% to 31.2%.

  2. In September 2026, Postscript gained share of searches among SMS marketing platforms worldwide, from 4.5% to 5.1%.

How are branded searches counted?

7 search terms

Brandwave collects information about searches that people make online using Klaviyo’s and Postscript’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Klaviyo

6 branded search terms

  • klaviyo
  • klaviyo app
  • klaviyo crm
  • klaviyo sms
  • klaviyo whatsapp
  • klaviyocom

Postscript

1 branded search term

  • postscript

How the Brand Demand Index is measured

Other head-to-heads among SMS marketing platforms

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