Knowledge base

Guides

Everything you need to send well: setup, deliverability, the API, campaigns and compliance.

Getting started

Quick start: your first email in 10 minutes

Create an account, verify a domain, make an API key and send.

5 min read

Verify your sending domain (DKIM, SPF, DMARC)

The DNS records that prove you own the domain and protect your reputation.

6 min read

Deliverability

Deliverability checklist: reach the inbox

The habits that keep your mail out of spam folders.

7 min read

Bounces, complaints and the suppression list

Why some addresses are skipped and how to manage them.

4 min read

Open and click tracking

How tracking works, when to use it and its limits.

4 min read

Developers

REST API basics: keys, idempotency and errors

Authenticate, retry safely and handle every response.

6 min read

Send through SMTP

Connect WordPress, Shopify apps, CRMs and other tools.

3 min read

Webhooks: react to email events

Receive signed events and verify them safely.

5 min read

Templates and variables

Reusable designs with safe personalisation.

4 min read

Marketing campaigns

Run your first marketing campaign

From audience to report: draft, test, schedule, measure.

7 min read

Import contacts from CSV

File format, custom fields and consent.

4 min read

Split test subject lines

Let your audience pick the better subject.

3 min read

Account & compliance

Unsubscribe, consent and GDPR

What the law and Gmail/Yahoo require, and what we do for you.

5 min read

Sandbox, limits and quotas

How much you can send and how to raise it.

4 min read

Team roles and account security

Who can do what, and how to keep keys safe.

4 min read