Customer.io Alternatives

Looking for an alternative to Customer.io? Here are 21 other email (transactional) options to consider:

• AhaSend
• Autosend
• Courier
• Elastic Email
• Falconyte
• Forward Email
• Inframail
• MailDiver
• MailerSend
• Mailgun
• Notifuse
• Plunk
• Postmark
• Resend
• Self Hosted SMTP
• SendGrid
• SendLayer
• SMTP.com
• SMTP2GO
• SocketLabs
• ZeptoMail