Communication
Best Email Delivery APIs in 2026
These APIs give software a service-based way to send email. This list helps teams compare pricing, access options and supported platforms before choosing a provider.
- 01
MailerSend MailerSend suits developers and teams integrating transactional email through an API or SMTP relay.
From $7/mo Free plan Web · iOS · API9.0 Visit Specs - 02
Postmark Postmark suits developers sending transactional or broadcast email from applications through API or SMTP.
From $5/mo Free plan Web · API8.8 Visit Specs - 03
Resend Broadcasts From $20/mo Free plan Web · API8.4 Visit Specs - 04
Elastic Email From $29/mo Free plan Web7.9 Visit Specs - 05
SMTP2GO From $8.33/mo Free plan Web · API7.8 Visit Specs - 06 Brevo Transactional Email From $9/mo Free plan Web7.5 Visit Specs
- 07 SparkPostBird From $15/mo Free plan6.4 Visit Specs
- 08 SendGrid Email APITwilio From $19.95/mo6.1 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices
are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank).
Makers can also buy a numbered place (how Specifiction is paid for).
Check whether the service fits your platform needs across web, API or iOS. Compare free access, trial terms and stated paid prices where they are published.