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Transactional Email APIs
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- 18
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1–18 of 18
Popular first highlights editorial picks, then ranks providers by monthly downloads of mapped SDKs on npm and PyPI (latest refresh 2026-10-26; unavailable measurements retain older counts). Others follow A–Z.
Sendgrid
39.5M SDK downloads/moView API profile
Resend
63.3M SDK downloads/moView API profile
Mailgun
4.9M SDK downloads/moView API profile
Postmark
4.9M SDK downloads/moView API profile
Brevo
1.8M SDK downloads/moView API profile
Mailjet
1.7M SDK downloads/moView API profile
MailerSend
460.9K SDK downloads/moView API profile
SparkPost
297.8K SDK downloads/moView API profile
Plunk
24.8K SDK downloads/moView API profile
Amazon SES
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Amply
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Mailmodo
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Mandrill
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Sendloop
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SendPulse
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Sendwithus
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SMTP
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Unisender
View API profileCounts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.