Apps similar to Lettr include Sendgrid, which has a free version. Other options are Mailgun, SMTP.com, Amazon Simple Email Service and turboSMTP. In total there are eight Email Marketing Services like Lettr for the web.
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.
Mailgun is email automation for developers. Use our REST APIs to effortlessly send, receive and track email from your website or application.
United States
SMTP.com is an email infrastructure provider that helps deliver your emails to Internet Service Providers (ISPs). It improves your email delivery success rate by integrating your traffic into its reputable flow.
United States
Amazon Simple Email Service (Amazon SES) is a cost-effective outbound-only email-sending service built on the reliable and scalable infrastructure that Amazon.com has developed to serve its own customer base.
United States
turboSMTP is a reliable, powerful, easy-to-use SMTP server that maximizes the deliverability of all your marketing and transactional emails.
Italy
EU
Build, test, and send transactional emails at scale. Resend provides the best developer experience helping you reach users instead of spam folders.
United States
A new kind of transactional messaging service designed for developers to work faster and smarter with a powerful infrastructure to scale quickly.
LithuaniaEU
Emailit is a versatile email sending platform catering to both marketers and developers. It offers flexible sending options through SMTP integration and a REST API, ensuring seamless integration with existing applications and software.
CzechiaEU
