CloudMailin vs MailerSend

CloudMailin receives email and delivers it to web applications through HTTP POST webhooks. Inbound messages can arrive as JSON, multipart form data, or raw text; attachments can be forwarded to a webhook or stored in Amazon S3, Azure Storage, or Google Cloud Storage. It also sends transactional email through an API or SMTP relay. Outbound tools include spam checks, link and open tracking, bounce handling, reporting, tagging, and priority queues. Inbound delivery history includes 30 days of searchable records with error and retry details, while metadata retention is listed as 60 days. CloudMailin says its inbound service works with any language or framework, naming examples from Node.js and Python to Java and C#. The service was founded in 2010 and is available through an API and the web. A free plan allows 10,000 emails per month and 512KB per message. Paid plans start at $25 a month; the listed options include different email and message-size limits. A seven-day trial is also listed.

MailerSend delivers transactional email through an email API and SMTP relay. Its editing tools include drag-and-drop, HTML and rich-text editors, along with dynamic templates and split testing. Webhooks, tracking, real-time activity, analytics and suppression-list management support monitoring. Inbound routing can parse replies into application events and route them to an app for further action. Integrations listed include Zapier, Supabase, Firebase, Slack, Laravel, WooCommerce, WordPress, ChatGPT and Claude. The Free plan is free and allows 500 emails per month, 100 daily API requests, one domain and one template. Hobby costs $5.60 a month, billed $67.20 yearly, and includes 5,000 emails per month. The pricing note lists paid plans from $7/mo. A 14-day Professional trial includes 500 emails per month, 100 daily API requests and one day of log retention. MailerSend is available on web, API and iOS; its mobile app is currently only available for iOS. It states that it is GDPR-compliant and hosts services in a certified ISO 27001 data center in Belgium.