email marketing

Brevo

brevo.com

Constant Contact

constantcontact.com

drip

drip.com

Emma

myemma.com

Hubspot

hubspot.com

Kit

kit.com

Klaviyo

https://www.klaviyo.com/solutions/marketing-automation

Mailchimp

mailchimp.com

MailerLite

mailerlite.com

Moosend

moosend.com

SendPulse

sendpulse.com

SmartrMail

smartrmail.com