turboSMTP
by turboSMTPturboSMTP delivers email through web, mobile, desktop and Linux apps plus an API.
Free plan Free trial From €14.95 a month AndroidiPhone & iPadWebWindowsMacLinux+1
Best Transactional Email Software 2026
Facts read 28 Sep 2026 – 21 Oct 2026
Transactional email software helps teams send application and service messages. This list helps buyers compare pricing, delivery controls, templates, integrations and platform access.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 turboSMTP | turboSMTP delivers email through web, mobile, desktop and Linux apps plus an API. | 6.6 | €14.95 a month | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 02 Mailchimp | Mailchimp runs email marketing and transactional messaging on web, iOS, Android and through an API. | 6.0 | $13 a month | Free plan | Android, iPhone & iPad, Web, API | 14 Oct 2026 |
| 03 ReachMail | ReachMail sends email through web, Android, iOS, and API apps, with free and paid plans. | 6.0 | $8 a month | Free plan | Android, iPhone & iPad, Web, API | 21 Oct 2026 |
| 04 MailerSend | MailerSend provides transactional email through an API and SMTP relay, with templates, tracking and inbound routing. | 5.7 | $7 a month, billed yearly | Free plan | iPhone & iPad, Web, API | 15 Oct 2026 |
| 05 EmailSuccess | EmailSuccess provides email delivery through web, desktop, self-hosted and API options, with event webhooks. | 5.6 | Free plan | Free plan | Web, Windows, Mac, API | 15 Oct 2026 |
| 06 Postmark | Postmark sends transactional email from its web app or API. | 5.4 | Free plan | Free plan | Web, API | 28 Sep 2026 |
| 07 Twilio SendGrid | SendGrid suits developers and organizations sending transactional or marketing email through APIs or SMTP. | 5.3 | $19.95 a month | Free plan | API | 3 Oct 2026 |
| 08 Mailmark | 5.2 | $10 a month | Free plan | Web, API, Self-hosted | 4 Oct 2026 | |
| 09 MailsSetu | 5.2 | ₹399 a month | Free plan | Web, API | 8 Oct 2026 | |
| 10 Maileroo | Maileroo provides email delivery through web and API access, with a dedicated IP option. | 5.1 | $10 a month | Free plan | Web, API | 2 Oct 2026 |
The list is rebuilt nightly. Use the makers' published figures for free plans, paid starting prices, trials, send limits, delivery logs, webhooks and dedicated IP options.
02
Mailchimp
Mailchimp runs email marketing and transactional messaging on web, iOS, Android and through an API.
AndroidiPhone & iPadWeb+1 Record6.0 Visit
03
ReachMail
ReachMail sends email through web, Android, iOS, and API apps, with free and paid plans.
AndroidiPhone & iPadWeb+1 Record6.0 Visit
04
MailerSend
MailerSend provides transactional email through an API and SMTP relay, with templates, tracking and inbound routing.
iPhone & iPadWebAPI Record5.7 Visit
05
EmailSuccess
EmailSuccess provides email delivery through web, desktop, self-hosted and API options, with event webhooks.
WebWindowsMac+2 Record5.6 Visit
6
Postmark
WebAPI Free plan Record5.4 Visit Postmark sends transactional email from its web app or API.
7
Twilio SendGrid
API $19.95 a month Record5.3 Visit SendGrid suits developers and organizations sending transactional or marketing email through APIs or SMTP.
10
Maileroo
WebAPI $10 a month Record5.1 Visit Maileroo provides email delivery through web and API access, with a dedicated IP option.
11
Nuntly
WebAPI €10 a month Record5.1 Visit Nuntly provides email delivery and templates through web and API access, with event webhooks.
12
Plunk
WebAPISelf-hosted Free plan Record5.1 Visit Plunk suits developers, marketers, and teams sharing email templates.
14
SMTP2GO
WebAPI $100 a year Record5.1 Visit SMTP2GO delivers email by SMTP or API and offers SMS via API on paid plans.
15
Waypoint
WebAPI $20 a month Record5.1 Visit Waypoint gives engineers an email API and product teams a shared way to build transactional messages.
17
Hyvor Relay
WebAPISelf-hosted €30 a month Record4.9 Visit Hyvor Relay is an open-source email API you can self-host, with a 300,000 monthly send limit.
18
Reloop
Self-hosted $10 a month Record4.9 Visit Reloop suits developers and teams building transactional or programmatic email workflows who want API, SMTP, or inbound webhook options.
22
Pombo
WebAPI $29 a month Record4.7 Visit Pombo handles marketing, lifecycle and transactional email with automation and audience segmentation.
23
Posthawk
Self-hosted $20 a month Record4.7 Visit Posthawk is a self-hosted email platform with delivery and template options.
24
Netcore Email API
WebAPI Free plan Record4.5 Visit Netcore Email API provides email delivery and template options through web and API access.
Before you choose
Compare free access and paid plans
Check the Free plan, Paid from and free-trial fields before you choose a tool. A free plan and a trial are separate options, so review both fields.
Match the published starting price to your expected sending needs.
Review delivery and sending limits
Compare delivery methods with the Monthly send limit. These fields show how a service handles messages and the volume its plans publish.
Check Delivery log retention if you need to review past sends or troubleshoot message events.
Check APIs, webhooks and templates
Look for API access when software must connect to an application. Event webhooks can pass delivery events back to your systems.
Compare Template options if your team needs reusable message designs or editing tools.
Choose the platform you can use
The list covers web, API, self-hosted, iOS, Android and macOS access. Select a service that matches the devices or deployment model you plan to use.
If you need to run the software on your own infrastructure, check the self-hosted entry rather than assuming web access is enough.
Consider a dedicated IP
Review the Dedicated IP option when your sending setup calls for a separate sending address. Compare this field with delivery methods and plan details before deciding.
Questions
What does this list compare?
It compares free plans, paid starting prices, delivery methods, template options, event webhooks, delivery log retention, dedicated IP options and monthly send limits.
Which platforms appear on the list?
Entries can support web, API, self-hosted, iOS, Android or macOS access. Check the platform details for the tool you are considering.
How should I compare free access?
Review the Free plan field and the free-trial details separately, then compare the paid starting price with your expected sending volume.
Why check monthly send limits?
The Monthly send limit shows the sending volume published for a plan. Compare it with your expected message volume before choosing.
What are event webhooks?
Event webhooks are a comparison field in this list. Review the entry's published details if your application needs delivery events sent back to it.
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