Transactional Email Tools

1. Resend runs on more than half of the sites using an email transactional tool (58%), 8.2 times as many sites as SendGrid.
2. Only 11 of the 172 email transactional tools we track run on more than 1% of these sites.
3. Among sites launched in September, Mandrill rose to #7 from #19 in August.

#	Movement	Tool	Country	Share	Bar	Sites	90 days
1	–	Resend Modern transactional email API.		58%		252,017
2	▼1	SendGrid Twilio SendGrid transactional and marketing email.		7.1%		30,796
3	▼2	Amazon SES Amazon Web Services' cloud email service for sending transactional and marketing email and receiving inbound mail.		7.1%		30,519
4	▲2	MailChannels Outbound SMTP relay used by many shared hosts (Cloudflare Workers Email, cPanel hosts) for transactional mail.		6.8%		29,515
5	▲1	Mail.Baby Budget transactional and inbound email service from MXroute, aimed at low-volume senders.		5.6%		23,966
6	▲12	Mandrill Mailchimp Mandrill transactional email API.		5.5%		23,806
7	▲2	Postal Open source mail delivery platform that organisations self host to send transactional and bulk email.		3.2%		13,707
8	▼3	Mailgun Mailgun transactional email API.		3.2%		13,654
9	▼1	Cloudflare Email Outbound transactional email sending service.		3.1%		13,279
10	▼2	Firebase Trigger Email Firebase extension that sends transactional email by writing documents to a Firestore collection.		1.1%		4,696
11	▼1	EmailJS Client-side email sending SDK. Lets sites trigger transactional email from browser JavaScript without a backend, routing through a configured email service (SendGrid, Mailgun, Gmail, etc).		1.0%		4,467
12	▼1	Mailjet Transactional and marketing email service from Sinch.		0.7%		2,957
13	–	JetSMTP Email delivery service from JetEmail.		0.5%		2,339
14	▼2	Elastic Email Bulk and transactional email delivery service with SMTP relay and API.		0.3%		1,360
15	–	Postmark ActiveCampaign Postmark transactional email API.		0.3%		1,321

Share is of the 431,630 sites using an email transactional tool; a site can use more than one. Arrows compare each tool's rank among sites launched in September with August. The line is its share of new sites over 90 days. Showing the top 15 of 172.

Watches, exports and the API give you every email transactional tool and the sites using each, from £15 a month.

Other kinds of tool most often found on the same sites, leaving out the plumbing every site has (DNS, CDN, hosting).

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• UI Library 12,323
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