Sidemail is an EU-based email platform built for SaaS products. You send transactional emails like password resets and welcome messages through a JSON API or SMTP relay, then run newsletters, onboarding sequences, and lifecycle automation from the same account. Templates come from a no-code editor or plain Markdown. Sidemail manages DNS, IP warm-up, and bounce handling, so small teams without email ops staff can ship reliable email fast.

• Simple Email API: Send transactional emails with a short, readable code snippet. Developers report going from signup to live sending in about 10 minutes.
• SMTP relay: Switch from an existing provider by changing host, port, and credentials. No code rewrite needed if your app already speaks SMTP.
• No-code template editor: Build mobile-responsive, Outlook-compatible templates with dark mode support. Import a pre-built template for password resets or welcome emails, or write emails in Markdown.
• Marketing and automation in the same plan: Run newsletters, scheduled campaigns, event-triggered sequences, and autoresponders without buying a second product.
• Contact management and subscribe forms: Store contact profiles, handle unsubscribes automatically, and clean your list. Subscribe forms feed directly into your contact database.
• Managed deliverability: Sidemail handles DNS setup, IP reputation, warm-up, feedback loops, and bounce handling on your behalf.
• Email address validation endpoint: Check format, common domain typos, disposable providers, and MX records before you send. Deep mode asks the destination server whether it accepts the address.
• Stripe integration: Import Stripe customer emails with one click and trigger billing or churn-prevention sequences with no code.
• Email MCP server: Connect AI assistants like Claude or Cursor to your Sidemail account so they can send email and manage contacts and domains through natural language prompts.
• Request-level observability: The dashboard logs every API request with body, response, status, and duration, plus previews and timelines for each sent email.

• Fast integration: Users report going from signup to production sending in roughly 10 to 30 minutes. One customer called it the easiest email service they had used.
• One plan covers everything: Transactional, marketing, and automation are bundled. Competitors like Mailgun and Mailchimp typically require separate products or paid add-ons for the same coverage.
• Deliverability without configuration work: Infrastructure, IP reputation, and warm-up are handled for you, which matters for teams with no dedicated email engineer.
• Clear developer documentation: The API reference includes working code samples per language, and templates are called by name with variables passed in.

• No free tier: Pricing starts at $19/month ($14/month billed annually) for 1,000 emails, with a 7-day trial that requires no credit card. There is no permanent free plan listed.
• Built for SaaS, narrow beyond it: Consistent with the homepage positioning ("Email delivery made simple for SaaS & AI") and the permission-based model.
• Small integration ecosystem: Stripe is the main listed third-party integration. Teams expecting a long native connector list will need to build against the API instead.

• Shipping transactional email for a new SaaS app: You need password resets, sign-up confirmations, and magic links working before launch. Import a pre-built template, call the API with your template name and variables, and the emails are live the same day.
• Replacing an unreliable DIY setup: Apps sending through PHP mail() or a raw SMTP server often land in spam. One user swapped mail() for a Sidemail snippet and messages started reaching the inbox. Sidemail takes over authentication and reputation.
• Automating user onboarding: Trigger a welcome email on signup, then a sequence covering setup steps, feature nudges, and trial expiry reminders. Everything runs from the same contact profiles your transactional emails use.
• Consolidating two email vendors into one: If you pay for a transactional API plus a separate marketing tool, you can move newsletters, campaigns, and product updates onto the same plan and cut a subscription.
• Stripe-driven billing and churn emails: Import Stripe customers with one click, then automate payment failure notices, renewal reminders, and win-back messages without writing sync code.