Brandwave

How popular isCustomer.io?

In September 2026, people searched for Customer.io by name about 12,300 times worldwide, about the same as the previous year. These searches made up 10.4% of all global push notification service searches, placing Customer.io third out of 11 services. When we asked both ChatGPT and Google AI Overviews about push notification services, Customer.io appeared in two of the five answers and was the fourth most recommended of the 11.

Search and AI answers in September 2026

Customer.io is the third most searched of 11 competitors and the fourth most recommended in AI answers.

  1. OneSignalShare of searches 47.5%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
  2. PusherShare of searches 28%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  3. Customer.ioShare of searches 10.4%Mentioned in 2 of 5 AI answersPlace in AI recommendations 4th
  4. Firebase Cloud MessagingShare of searches 6.9%Mentioned in 5 of 5 AI answersPlace in AI recommendations 2nd
  5. BrazeShare of searches 4.8%Mentioned in 2 of 5 AI answersPlace in AI recommendations 5th

+6 more

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Top push notification services in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Customer.io was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Customer.io is the fourth most recommended of the 11.

Most recommended by AI

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

  1. OneSignal1st
  2. Firebase Cloud Messaging2nd
  3. PushEngage3rd
  4. Customer.io4th
  5. Braze5th
  6. Airship6th
  7. Pusher–
  8. Pushwoosh–
  9. Iterable–
  10. CleverTap–
  11. +1 more

Mentioned by AI

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

  • OneSignal5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Firebase Cloud Messaging5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • PushEngage3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Customer.io2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Braze2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Airship1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Pusher0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Pushwoosh0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Iterable0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • CleverTap0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

+1 more

See every answer about push notification services

5 answers

Not named in any answer:

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

Which push notification services compete with Customer.io?

Customer.io against push notification services worldwide, by month

Share of searches by month for OneSignal, Pusher, Customer.io, Firebase Cloud Messaging, Braze. The figures are in the table below the chart.

View monthly share of searches table
MonthOneSignalPusherCustomer.ioFirebase Cloud MessagingBrazePushwooshPushEngageIterableAirshipCleverTapMoEngage
Oct 202544.9%29.7%9%8.9%4.6%1.4%0.73%0.49%0.18%0.12%0.02%
Nov 202549.5%26.9%8.2%8%4.4%1.3%0.81%0.45%0.17%0.11%0.04%
Dec 202545.1%29.6%9%8.8%4.4%1.4%0.78%0.46%0.22%0.12%0.03%
Jan 202648.5%26.1%9.7%7.8%5%1.3%0.79%0.54%0.2%0.09%0.03%
Feb 202643.7%28.7%10.7%8.6%5.2%1.4%0.76%0.51%0.22%0.15%0.03%
Mar 202644.8%29.4%9%8.8%4.4%2.1%0.64%0.55%0.17%0.09%0.02%
Apr 202649.1%26.4%9.8%7.9%4%1.3%0.7%0.49%0.2%0.14%0.03%
May 202649.1%26.4%9.8%7.9%4.2%1.3%0.47%0.59%0.17%0.1%0.02%
Jun 202647.8%26.6%9.9%7.9%4.8%1.3%0.8%0.55%0.21%0.11%0.02%
Jul 202646.7%27.7%10.3%8.3%4.5%1.3%0.49%0.53%0.21%0.09%0.03%
Aug 202646.9%27.7%10.2%8.3%4.6%1.1%0.49%0.48%0.2%0.1%0.03%
Sep 202647.5%28%10.4%6.9%4.8%1.1%0.5%0.47%0.2%0.08%0.03%

  1. 1.OneSignal

    47.5%

    Held 1st. 56.2K estimated branded searches, +0.04% vs prior month. Share +0.6 points.

  2. 2.Pusher

    28%

    Held 2nd. 33.1K estimated branded searches, -0.06% vs prior month. Share +0.4 points.

  3. 3.Customer.io

    10.4%

    Held 3rd. 12.3K estimated branded searches, -0.08% vs prior month. Share +0.1 points.

  4. 4.Firebase Cloud Messaging

    6.9%

    Held 4th. 8.1K estimated branded searches, -18.2% vs prior month. Share -1.4 points.

  5. 5.Braze

    4.8%

    Held 5th. 5.7K estimated branded searches, +4.6% vs prior month. Share +0.3 points.

  6. 6.Pushwoosh

    1.1%

    Held 6th. 1.3K estimated branded searches, 0% vs prior month. Share 0 points.

  7. 7.PushEngage

    0.5%

    Held 7th. 590 estimated branded searches, 0% vs prior month. Share 0 points.

  8. 8.Iterable

    0.47%

    Held 8th. 560 estimated branded searches, -1.8% vs prior month. Share 0 points.

  9. 9.Airship

    0.2%

    Held 9th. 240 estimated branded searches, 0% vs prior month. Share 0 points.

  10. 10.CleverTap

    0.08%

    Held 10th. 100 estimated branded searches, -16.7% vs prior month. Share 0 points.

  11. 11.MoEngage

    0.03%

    Held 11th. 40 estimated branded searches, +33.3% vs prior month. Share 0 points.

Compare popularity between Customer.io and its closest rivals

Every comparison with Customer.io

22 comparisons

How has branded search demand for Customer.io changed worldwide over the last 12 months?

3 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for Customer.io worldwide held steady at 12.3K.
  • Across the 12 months ending September 2026, Customer.io’s share of searches among push notification services worldwide increased from 9% to 10.4%.
  • Across the 12 months ending September 2026, Customer.io’s share of searches among push notification services worldwide peaked at 10.7% in February 2026 and was lowest at 8.2% in November 2025.

How did search popularity change for push notification services worldwide in September 2026?

6 changes

  1. In September 2026, OneSignal gained share of searches among push notification services worldwide, from 46.9% to 47.5%.

  2. In September 2026, Firebase Cloud Messaging lost share of searches among push notification services worldwide, from 8.3% to 6.9%.

  3. Pusher’s share of searches among push notification services worldwide has gained ground for 3 months in a row, from 26.6% to 28% in September 2026.

  4. Estimated monthly branded searches for MoEngage worldwide rose 33.3% over 12 measured months, from 30 to 40 in September 2026.

  5. Estimated monthly branded searches for CleverTap worldwide fell 41.2% over 12 measured months, from 170 to 100 in September 2026.

  6. Estimated monthly branded searches for PushEngage worldwide fell 41% over 12 measured months, from 1K to 590 in September 2026.

How are Customer.io’s branded searches counted?

6 search terms

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

  • customer io
  • customer io crm
  • customer io email
  • customer io sms
  • customer io whatsapp
  • Customer.io

Do you work for Customer.io? To request corrections or removal please contact us via our support page and we will be happy to assist.

How the Brand Demand Index is measured

Where does Customer.io compete?

Customer.io is ranked in six competitor sets. Each share is worked out among that set's brands, so it differs from set to set.
Competitor setRankShare of searchesRanking
Campaign management platforms6th of 80.29%Show ranking
Customer engagement platforms5th of 102.9%Show ranking
Customer marketing platforms3rd of 63.2%Show ranking
Mobile marketing platforms3rd of 88.2%Show ranking
In app messaging platforms3rd of 98.4%Show ranking
Push notification services3rd of 1110.4%Shown above
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Is Customer.io your brand?

Put your own campaigns, spend and outcomes next to this demand line, so you can see which of your marketing lined up with the movements above.

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