17.8
MailerSend delivers transactional email through an email API and SMTP relay.
Free planiOSWebAPI
Best Email Delivery APIs in 2026
Email delivery APIs let software send application email through a service instead of a mail app. This list covers services with web access, an API, or iOS support. Check platform details before choosing. The supplied facts list web, API and iOS platforms, with no Android platform listed. Compare free plans, trials and published starting prices where available.
27.6
Postmark delivers and tracks application email as an alternative to SMTP or Sendmail.
Free planWebAPI
37.2
Resend Broadcasts lets users send email campaigns to existing contacts through a visual editor or API.
Free planWebAPI
- 4
SMTP2GO
SMTP2GO provides SMTP and API email delivery for businesses and individual senders, with real-time reporting on deliveries, bounces, opens, clicks,…
Free planWebAPI6.9From $100 a year - 5
Elastic Email
Free planWeb6.6From $29 a month - 6
Brevo Transactional Email
Free planWeb6.5From $9 a month - 75.7From $15 a month
- 8
SendGrid Email API
Twilio
4.9From $19.95 a month
Choosing well
Check phone access
No Android app is listed in the supplied platform facts. If you need to manage delivery from a phone, check whether the provider's web interface or iOS app meets that need.
Compare free and paid plans
Free plans are available from services such as Brevo Transactional Email, Elastic Email and SMTP2GO. SendGrid Email API is listed as paid, with a $19.95 monthly plan.
Published starting prices differ: MailerSend lists paid plans from $7/mo, Brevo from $9/mo, and Elastic Email from $29/mo.
Look for a trial
MailerSend lists a 14-day trial alongside its free plan. Check the provider's current terms to see what the trial or free allowance covers before moving a project.
Match the access method
The listed platform options are web, API and iOS. Choose an API when your software will send messages directly, or compare web and iOS access when people need a management interface.
Questions people ask
Do these email APIs have Android apps?
The supplied platform facts list web, API and iOS, not Android. Check a provider's current platform details before relying on an Android app.
Which services list a free plan?
Brevo Transactional Email, Elastic Email, MailerSend, SMTP2GO and SparkPost list free plans in the supplied facts.
Is there a free trial?
MailerSend lists a 14-day trial. Other trial terms are not given in the supplied facts.
Which API has no free plan listed?
SendGrid Email API is listed as paid, with no free plan and a $19.95 monthly plan.
What platforms are covered?
The supplied platform facts cover web, API and iOS access.