Kingmailer is described as 'simple and fully featured mail server / SMTP service for use by anyone, not just developers. Think Sendgrid but easy to use, cheaper and 98% inbox delivery. Start sending, receiving or routing your emails with a few clicks' and is an website in the Online Services category. There are more than 100 alternatives to Kingmailer, not only websites but also apps for a variety of platforms, including Windows, Self-Hosted solutions, SaaS and Mac. The best alternative is TinyLetter, which is free. Other great sites and apps similar to Kingmailer are Buttondown (Freemium), Sendinblue (Freemium), Stripo.email (Free Personal) and HelpCrunch (Paid).
Stripo.email is an email design platform with over 500 000 users worldwide. Stripo enables 500,000+ users and teams of different industries to design responsive email templates fast without any HTML skills.
Scalable email delivery for transactional email SendGrid transparently handles DKIM, SPF, ISP rate limits, content inspection, bounces, and spam reports to help users achieve higher deliverability. SendGrid integrates in minutes by just changing three SMTP settings.
Newsletter and email marketing software, it helps you send email campaigns, newsletters, announcements and notifications. You can send a single email to hundreds or millions of subscribers. Emails are composed in a web interface. Emails can be personalised.
Campaign Monitor offers everything a designer needs to run successful email marketing campaigns for themselves and their clients. You can even rebrand the interface, create sub-accounts for your clients and let them send their own campaigns.