Newsletter Glue is a WordPress newsletter plugin launched in 2016 that lets users create emails in the WP editor and send and track them automatically through Mailchimp, ConvertKit, and other providers.
iContact is an email marketing service founded in 2003 in Durham, USA, serving 100,000+ users with an easy-to-use, affordable solution for SMBs.
SendPulse Email is the email sending component of the SendPulse platform, offering SMTP/API email delivery with a permanent free daily allocation, suited for budget-conscious SMB email marketing needs.
Brevo (formerly Sendinblue) is a France-based omnichannel marketing platform combining email, SMS, WhatsApp, chat, and CRM with visual campaign builder, automation workflows, and AI optimization.
SendGrid Email is Twilio's email delivery API product processing billions of emails daily, featuring v3 API, SMTP relay, delivery analytics, dynamic templates, and sender reputation management.
SendCloud is a Netherlands-based email delivery platform founded in 2014, specializing in SMTP/API email sending for ecommerce and SaaS businesses with automation and deliverability optimization.
Postmark Email is a high-deliverability transactional email service known for sub-1-second average delivery, Message Stream technology, and precise bounce handling — the developer's choice for transactional email.
Mailjet, founded in 2010 in Paris, France (now part of Sinchn/Pathwire), provides a unified transactional and marketing email API service trusted by 55,000+ customers, with 6,000 free emails/month and full GDPR compliance.
Mailgun Email is a developer-focused email API product offering RESTful API, SMTP relay, real-time analytics, smart bounce management, and event webhooks, processing billions of emails daily.
MailerSend is a UK-based developer email API platform founded in 2019, offering 12,000 free emails per month via SMTP and REST API.
Mailchimp Email is a leading email marketing platform offering drag-and-drop builder, marketing automation workflows, audience segmentation, and A/B testing to manage the full email marketing lifecycle.
AuthSMTP is a UK-based SMTP relay specialist founded in 2004, operating for over 20 years. Starting at $8.25/month with 5 GB traffic, it offers lean and reliable outbound email forwarding for users who need SMTP relay without analytics.
Migadu is a fairly-priced email hosting service from Switzerland with an "Email Done Right" philosophy, supporting unlimited domains and unlimited aliases, billed by actual usage rather than per mailbox.
Mailercloud is an email marketing and SMTP relay platform for SMBs, offering a drag-and-drop editor, behavioral triggers, A/B testing, and detailed reporting at an affordable price.
EmailLabs is a Poland-based email delivery and marketing platform offering SMTP relay and email API with separate routing for transactional and marketing traffic, dedicated IPs, full authentication, and real-time delivery analytics — particularly strong in Eastern Europe.
MailerSend, founded in 2019 and headquartered in the United Kingdom, is a developer-focused email API and SMTP relay platform with a free tier of 12,000 emails per month, ideal for transactional and notification emails.
EmailOctopus, founded in 2015 in London, UK, specializes in ultra-low-cost email marketing powered by Amazon SES. Its free plan supports 2,500 subscribers at roughly 10x lower cost than Mailchimp.