Fast and easy way to send transactional emails with API

Start sending emails like password reset or welcome email from your application in just a few minutes — Sidemail makes it incredibly easy to create, maintain, analyze, and deliver beautiful transactional emails.

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No credit card required.

Email delivery that you can count on

Nobody likes to wait for a password reset email that takes too long to deliver. Even worse, if it ends up in the spam folder, you can't find it, and when you do, it's already expired.

Sidemail solves this problem. No more upset customers that didn't receive their email on time, every time.


  • Reduce wait time
  • Prevent spam folder
  • Minimize your costs
Email delivery

Simple to integrate

Start sending emails from your application in just a few minutes thanks to Sidemail API—modern JSON API that is rich in features, well documented, and designed with developer experience in mind. Visit the docs.

Code examples
await sidemail.sendMail({
	toAddress: "",
	fromName: "Startup name",
	fromAddress: "",
	templateName: "Single sign-on",
	templateProps: { url: "" },

Craft your emails easily

Built for the ultimate workflow, the Sidemail no‑code editor lets you create reusable email templates, such as password reset. Then, in your application, you reference the email template either by name or its ID when making the API request.

  • Upload a logo, and match brand colors
  • All email clients supported
  • Pre-generated API code snippets

Jump start email integration with pre‑made email templates

To give you the best starting point, we researched hundreds of emails and crafted a well-spelled email for every occasion. And, if you need it, you can modify every bit of it.

  • Account activation
  • Receipt
  • Message notification
  • Canceled subscription
  • Usage warning
  • Sign in alert
  • Single sign-on
  • Welcome
  • Billing issue
  • Trial expired
  • Product feedback
  • Password reset

Key metrics

Take out the guesswork and learn how your users interact with emails. Analyze charts and get a broad understanding of your email delivery or visit sending history to gain in-depth insights into a specific email.

  • Total deliveries and recipients
  • Bounces, spam complaints and opens
  • Individual email preview in sending history

Sending history

Get a comprehensive overview of every email you send. See the email preview, timeline, status, and more. Want to see information about the specific email you sent year ago? No problem, Sidemail gives you unlimited access to email history.

  • Unlimited searchable email history
  • 30-day full email preview
  • Email activity timeline
  • Variables

    Add recipient-specific information to your email by using variables. Useful for links, dates, amounts.

  • Your domain & DKIM

    Use your own domain for sending. For the best delivery results, we automatically set up DKIM and SPF.

  • First-hand support

    Sidemail is built out by two real people. If needed, you'll get the helping hand right from us.

Sending in minutes

Try Sidemail free for 7 days. No credit card required.

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P.S. we can’t keep up the landing pages with all the new stuff we daily ship into Sidemail, so best if you try it and see for yourself! — Patrik & Kristyna