How many companies use Sendgrid?

TechLeads currently detects Sendgrid on 522,101 websites. HTTP Archive's monthly crawl, a separate dataset, detected it on 1,280,135 pages in September 2026.

Who are Sendgrid's biggest competitors?

By number of websites, the largest Email technologies besides Sendgrid are Google Workspace (3,246,665), Microsoft 365 (2,701,100), Hostinger Mail (938,104), MailChimp (820,056), IONOS Mail (690,910).

Which companies use Sendgrid?

Websites using Sendgrid include creativecommons.org, tinyurl.com, hbr.org, time.com, foursquare.com, 500px.com. The full list of 522,101 websites can be exported as a CSV for $29.

Sendgrid market share and customers

As of October 8, 2026, Sendgrid is used by 522,101 websites in the TechLeads index: 4.2% of all Email detections, the 8th most-used of 133 Email technologies.

522,101

websites using Sendgrid

4.2%

share of Email

of 133 in Email

Cite this data

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

Citation

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

HTML link

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

Sendgrid vs competitors in Email

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

#	Technology	Websites	Share
1	Google Workspace	3,246,665	26.1%
2	Microsoft 365	2,701,100	21.7%
3	Hostinger Mail	938,104	7.6%
4	MailChimp	820,056	6.6%
5	IONOS Mail	690,910	5.6%
6	Mailgun	664,476	5.3%
7	Amazon SES

Sendgrid usage over time

In HTTP Archive's monthly crawl of public websites, Sendgrid was detected on 1,280,135 pages in September 2026, up 0.25% from a year earlier (peak: 1,551,826). Among the 1,000 most-visited sites, it appeared on 136. 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, Amazon SES 1,270,273, Mailgun 1,186,643.

Sendgrid 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.

US4,373
GB1,095
BR646
AU429
FR357
CA250
DE201
NL179
NO163
SE114

Companies using Sendgrid

creativecommons.org
tinyurl.com
hbr.org · Hbr
time.com · Time
foursquare.com · Foursquare
500px.com
fortune.com
getpocket.com
ifttt.com · IFTTT
automattic.com · Automattic
blacklivesmatter.com
technorati.com · Technorati

See all 522,101 websites using Sendgrid or download the full list as a CSV for $29.

How these numbers are calculated

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

FAQ

Sendgrid accounts for 4.2% of Email detections in the TechLeads index (522,101 websites), which makes it the 8th most-used of 133 Email technologies we track.