Apps for Sending Emails

I used to use Mailchimp to send emails to my list. NowI’m using Beehiiv. I send out emails to my list when there is new informationabout my books. For example, I have a middle grade mystery that will bepublished in November. I’ll send out notification about this as it approaches.I also send out emails about anniversary dates for published books. In August Iwill note the  thirteenth anniversary ofthe publication of Senior Moments Are Murder, the third book in the PaulJacobson Geezer-lit Mystery Series.