CloudMailin vs Mailjet

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.

Mailjet is an email marketing and API platform for creating, sending, and automating marketing and transactional messages. Marketing teams can use its drag-and-drop editor, forms, landing pages, segmentation, preference centers, personalization, A/B testing, and analytics. Automation workflows can send messages based on customer actions. Developers have a RESTful Email API, SMTP Relay, Parse API, Event API, SDKs, webhooks, and an MCP Server. Team features include shared workspaces, roles, approval flows, and collaboration. Mailjet lists more than 100 ready-to-use integrations and supports custom connections through its API. The free plan includes 6,000 emails per month, capped at 200 per day, and 1,000 contacts; signup does not require a credit card. Starter costs $9 a month and includes 8,000 emails monthly with no daily sending limit. Essential costs $19 a month, and Premium costs $29 a month. Unused email credits expire at the billing-cycle end, and additional sends after credits run out are billed.