# Mailersend **Source:** https://geo.sig.ai/brands/mailersend **Vertical:** Marketing Technology **Subcategory:** Transactional Email & SMS for Developers **Tier:** Growth **Website:** mailersend.com **Last Updated:** 2026-04-14 ## Summary Mailersend is a transactional email and SMS platform for developers offering a REST API, SMTP relay, drag-and-drop templates, and detailed analytics for application messaging. ## Company Overview Mailersend is a transactional email and SMS platform founded in 2020 by the team behind MailerLite, headquartered in Vilnius, Lithuania, that provides developers and product teams with a developer-first infrastructure for sending application-generated transactional emails and SMS messages. Built as a distinct product from MailerLite's marketing email service, Mailersend was designed from the ground up to address the transactional sending use case with an API architecture and feature set oriented toward developer workflows — providing a clean REST API with comprehensive SDK support, an SMTP relay option for existing codebases, webhook-based event notifications for delivery tracking integration, and a no-code email template builder that allows designers and product managers to own template updates without requiring developer involvement for each change. Mailersend's feature set covers the core transactional email requirements of modern SaaS and e-commerce applications: bulk sending for high-volume notification use cases, custom domain sending with automated SPF/DKIM configuration, inbound email routing for reply-to handling and email parsing applications, email verification to reduce bounce rates, and suppression list management to maintain sending reputation. The platform's activity logs provide per-message delivery tracking with status details, open and click events, and bounce categorization accessible through both the dashboard and API, giving development teams the observability into email delivery they need to debug customer-reported issues without requiring log file analysis. Transactional SMS capabilities allow teams to send one-time passwords, booking confirmations, and alert notifications through the same account and API that manages transactional email. Mailersend's pricing model makes it accessible for early-stage startups with a free tier that includes meaningful monthly send volumes, while scaling through plans that accommodate growth without the per-seat charges or minimum commitments that make some competing platforms costly for companies in early growth stages. The platform competes with Postmark, Mailgun, and Resend in the developer-focused transactional email market, drawing on the MailerLite brand's deliverability reputation and infrastructure investment while offering a purpose-built product experience for transactional use cases rather than adapting a marketing email platform for developer transactional needs. ## Frequently Asked Questions ### How does Mailersend's inbound email routing capability extend its value beyond outbound transactional sending? Most transactional email services only handle outbound message delivery, but many application workflows require receiving and processing reply emails or inbound messages — support ticket creation from email replies, handling email-based confirmations, processing form submissions delivered by email, or building email-to-action integrations. Mailersend's inbound routing receives emails to configurable addresses on custom domains, parses the content and attachments, and delivers the structured data to a webhook endpoint in the sending application, enabling product teams to build complete email-based interaction flows without a separate inbound email processing service. ### What is MailerSend and how does it differ from MailerLite? MailerSend is a transactional email and SMS API service built for developers — sending triggered, real-time emails like password resets, order confirmations, and account notifications at scale. It is a sister product to MailerLite (marketing email) but designed for technical messaging workflows rather than marketing campaigns. ### What APIs does MailerSend provide? MailerSend provides a RESTful email API, SMTP relay, and bulk email API with SDKs for PHP, Node.js, Python, Ruby, Go, and Java — enabling developers to integrate transactional email into applications with minimal setup and consistent cross-language support. ### Does MailerSend support SMS messaging? Yes — MailerSend provides an SMS API for transactional SMS messaging (verification codes, alerts, notifications) in addition to email, enabling developers to build multi-channel notification systems from a single API provider without managing separate SMS and email services. ### How does MailerSend handle email templates? MailerSend includes a drag-and-drop template editor with version control and dynamic variable support — allowing developers and non-technical teams to manage transactional email templates without hardcoding HTML. Templates can be called via API with dynamic content substitution. ### What deliverability tools does MailerSend provide? MailerSend provides SPF, DKIM, and DMARC setup guidance, dedicated sending domains, email analytics (delivery rate, open rate, bounce rate), webhook notifications for delivery events, and suppression list management to maintain high deliverability for transactional messages. ### What is MailerSend's free tier? MailerSend's free tier includes 3,000 emails per month with basic API access and templates — suitable for startups building their first transactional email system. Paid plans scale from $35/month for 50,000 emails up to enterprise volumes with custom pricing. ### How does MailerSend compare to SendGrid and Postmark? MailerSend positions as a more affordable alternative to SendGrid with stronger template tooling, and competes with Postmark on transactional email quality and developer experience. Its integration with the MailerLite ecosystem is a differentiator for companies using both marketing and transactional email. ## Tags saas, b2b, martech, developer-tools, platform, startup, europe, api-first, smb, technology, marketing --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*