| # | Company | Category | Lowest paid | Free tier | Per-unit pricing | Open |
|---|---|---|---|---|---|---|
| 1 | AhaSend pricingahasend.com | transactional email | Sales-led | No | — | |
| 2 |  Amazon SES pricingaws.amazon.com | transactional email | Sales-led | No | — | |
| 3 | Aritic Mail pricingaritic.com | transactional email | Sales-led | No | — | |
| 4 | Doppler Relay pricingdopplerrelay.com | transactional email | Sales-led | No | — | |
| 5 | Dyspatch pricingdyspatch.io | transactional email | Sales-led | No | — | |
| 6 | Emailkick pricingemailkick.com | transactional email | Sales-led | No | — | |
| 7 | Flowmailer pricingflowmailer.com | transactional email | Sales-led | No | — | |
| 8 | GreenArrow Engine pricinggreenarrowemail.com | transactional email | Sales-led | No | — | |
| 9 | JangoSMTP pricingjangosmtp.com | transactional email | Sales-led | No | — | |
| 10 | Kingmailer pricingkingmailer.co | transactional email | Sales-led | No | — | |
| 11 | Mailcast pricingmailcast.io | transactional email | Sales-led | No | — | |
| 12 | Mailchimp Transactional Email pricingmailchimp.com | transactional email | Sales-led | No | — | |
| 13 | MailerSend pricingmailersend.com | transactional email | Sales-led | No | — | |
| 14 | Mailgun pricingmailgun.com | transactional email | Sales-led | No | — | |
| 15 | MailTock pricingmailtock.com | transactional email | Sales-led | No | — | |
| 16 | Netcore Email API pricingnetcorecloud.com | transactional email | Sales-led | No | — | |
| 17 | Postmark pricingpostmarkapp.com | transactional email | Sales-led | No | — | |
| 18 | SendGrid pricingsendgrid.com | transactional email | Sales-led | No | — | |
| 19 | SMTP pricingsmtp.com | transactional email | Sales-led | No | — | |
| 20 | SMTP2GO pricingsmtp2go.com | transactional email | Sales-led | No | — | |
| 21 | SocketLabs pricingsocketlabs.com | transactional email | Sales-led | No | — | |
| 22 | SparkPost pricingsparkpost.com | transactional email | Sales-led | No | — | |
| 23 | Sweego pricingsweego.io | transactional email | Sales-led | No | — | |
| 24 | Takeout pricingtakeout.bysourfruit.com | transactional email | Sales-led | No | — | |
| 25 | UniOne pricingunione.io | transactional email | Sales-led | No | — | |
| 26 | Zoho ZeptoMail pricingzoho.com | transactional email | Sales-led | No | — |
