How many companies use Sendinblue?

TechLeads currently detects Sendinblue on 190,288 websites. HTTP Archive's monthly crawl, a separate dataset, detected it on 464,024 pages in September 2026.

Who are Sendinblue's biggest competitors?

By number of websites, the largest Marketing Platform technologies besides Sendinblue are Sendgrid (522,101), MailJet (183,055), Constant Contact Mail (18,013), Campaign Monitor (11,348), AWeber Email (10,448).

Which companies use Sendinblue?

Websites using Sendinblue include sketchfab.com, challonge.com, ecosia.org, w3schools.com, ouest-france.fr, lefigaro.fr. The full list of 190,288 websites can be exported as a CSV for $29.

Sendinblue market share and customers

As of October 8, 2026, Sendinblue is used by 190,288 websites in the TechLeads index: 20.0% of all Marketing Platform detections, the 2nd most-used of 106 Marketing Platform technologies.

190,288

websites using Sendinblue

20.0%

share of Marketing Platform

of 106 in Marketing Platform

Cite this data

Quoting these numbers? Credit TechLeads with a link to this page.

Citation

TechLeads. "Sendinblue Customers and Market Share." Data as of October 8, 2026. https://techleads.fyi/technology/sendinblue/market-share

HTML link

<a href="https://techleads.fyi/technology/sendinblue/market-share">Sendinblue market share (TechLeads data)</a>

Sendinblue vs competitors in Marketing Platform

Websites using each technology in the TechLeads index, and its share of all Marketing Platform detections.

#	Technology	Websites	Share
1	Sendgrid	522,101	55.0%
2	Sendinblue	190,288	20.0%
3	MailJet	183,055	19.3%
4	Constant Contact Mail	18,013	1.9%
5	Campaign Monitor	11,348	1.2%
6	AWeber Email	10,448	1.1%
7	EKM Email Marketing

Sendinblue usage over time

In HTTP Archive's monthly crawl of public websites, Sendinblue was detected on 464,024 pages in September 2026, down 5.2% from a year earlier (peak: 537,787). Among the 1,000 most-visited sites, it appeared on 32. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.

Same month, other Email technologies in HTTP Archive: Google Workspace 7,328,416, Microsoft 365 6,889,878, MailChimp 1,572,197, Sendgrid 1,280,135, Amazon SES 1,270,273.

Sendinblue customers by country

Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.

US1,576
FR1,240
DE547
GB536
IT189
AT93
NL93
ES89
BR88
CH77

Companies using Sendinblue

sketchfab.com · Paris / New York
challonge.com
ecosia.org
w3schools.com
ouest-france.fr · Ouest-France.fr
lefigaro.fr
publi24.ro
whitepaperby.com · White Paper by
steemit.com
databox.com · Databox
rankmath.com · Rank Math
taz.de

See all 190,288 websites using Sendinblue or download the full list as a CSV for $29.

How these numbers are calculated

TechLeads scans public websites and detects Sendinblue from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Sendinblue's website count divided by the website counts of all Marketing Platform technologies we track; a site using two Marketing Platform tools counts for both. Counts were last refreshed on October 8, 2026 and update daily.

FAQ

Sendinblue accounts for 20.0% of Marketing Platform detections in the TechLeads index (190,288 websites), which makes it the 2nd most-used of 106 Marketing Platform technologies we track.