Email guides
Practical, vendor-neutral guides to sending email that actually arrives, from authentication to inbox placement.
- SPF, DKIM and DMARC explained
The three email authentication records, what each one does, and how they work together to get your mail delivered.
- How to improve email deliverability
A practical checklist to get more of your transactional email into the inbox and out of the spam folder.
- Transactional vs marketing email
The difference between the two, why it matters for deliverability and consent, and how to keep them apart.
- What is a sending domain?
The domain your email is sent from and authenticated against, why mailbox providers require a verified one, and how to set it up.
- SMTP vs email API: which should you use?
The two ways to send email through a provider, the trade-offs between a drop-in SMTP relay and a richer HTTP API, and when to pick each.
- How to handle email bounces
What a bounce is, the difference between hard and soft bounces, how they hurt your reputation, and why suppression lists and bounce webhooks matter.
- What is email sender reputation?
The trust score mailbox providers assign you, domain vs IP reputation, what shapes it, when a dedicated IP makes sense, and how to protect it.
- Email webhooks explained
What a webhook is and why it beats polling, the common email event types, why signed webhooks matter, and how to consume them reliably.
- European transactional email providers compared
Lettermint, Sweego, Scaleway, Brevo and Mailhuset side by side: where each is based, where it sends from, free tiers and the price of 10,000 emails a month.