---
id: KB-PR-003
url: https://app.codecontract.io/help/troubleshooting/my-emails-are-not-arriving
idioma: en
categoria: problemas
audiencia: usuario
nivel: intermedio
actualizado: 2026-08-13
tambienEn: [es]
relacionados: [KB-PR-001, KB-CC-001]
citadoPor: [KB-PR-013, KB-PR-020, KB-PR-021, KB-CC-004, KB-IN-004, KB-CC-002]
---

# My emails are not arriving

_Why they land in spam, and the three things that fix it for good._

**Responde a:** emails go to spam · the recipient does not receive my notices · configure the domain for sending · improve email deliverability

If several different people say nothing arrives, it is neither coincidence nor bad luck: the recipient's mail system does not trust the sender. And trust is demonstrated, not requested.

**En corto**

- Sending from your own domain counts for far more than a generic one.
- Sending has to be authorised on your domain, or the mail arrives looking suspicious.
- A single all-caps subject line can send a whole batch to spam.

## The three things, by impact

1. **Use your domain** — Mail from @yourcompany.com passes filters a generic address does not. This changes the most.
2. **Authorise sending** — A few records have to be added to your domain saying this platform may send on your behalf. Whoever manages your domain does it in ten minutes.
3. **Mind the wording** — No capitals in the subject, no exclamation marks, no "URGENT". Filters read it literally.

> [!WARNING]
> Until the domain is authorised, the mail arrives claiming to be from you without being able to prove it. Gmail and Outlook filters treat that as suspicious, and rightly so.

## In the meantime

An SMS or WhatsApp arrives even when email does not. It is not the underlying fix, but it unblocks today's case.

**How do I know if a particular email bounced?**

The case flags it, with the reason.

**Can I ask people to add me to their contacts?**

Yes, and it helps, but it does not replace authorising the domain.

**How long before the change shows?**

A few hours after the records are in place.

## Ejemplos

**An accountancy firm finds half its notices are never opened.**

- Switches to their own domain
- Their IT person adds the authorisation records
- Rewrites subject lines without capitals

→ Open rates go from 40% to 85% in a week.

**Notices land in junk at one particular client.**

- Asks them to add the sender to their safe list

→ The next notice reaches the main inbox.

**A send goes to an old list and many addresses bounce.**

- Cleans the contacts before the next round

→ Sending reputation does not suffer.

**A corporate domain blocks everything external.**

- Agrees with their IT to allow the sender

→ The block is resolved once for the whole company.

**The supplier says it never arrived and it shows as sent.**

- Checks the send time and resends

→ You learn whether the problem is sending or receiving.

**Subject lines that look like marketing are used.**

- Writes specific subjects saying what is requested

→ The email gets opened rather than dismissed.