What are SPF, DKIM and DMARC for sending newsletters?

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SPF, DKIM and DMARC are three authentication systems that prove to mail providers that a newsletter really comes from the declared sender.

They are technical domain settings: they are not visible in the message, but they greatly affect how filters treat the sends of a company in Como, Brianza or Milan.

Authentication

What each one does

Three complementary checks, to be configured together.

SPF
States which servers can send email for the domain
DKIM
Digital signature that guarantees the integrity of the message
DMARC
Sets what to do if SPF and DKIM checks fail
Reports
Let you see who is using the domain

Domain configuration

The settings are entered in the domain's DNS zone, taking care not to interfere with business email that is already active.

Checking the sends

After configuration we check that messages are authenticated by the main providers.

Monitoring over time

Our Cantù team follows companies between Como and Lugano even when the domain or suppliers change.

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Portfolio

What we have built

Want a check of your sending domain?

Write to us from Como, Milan or Lugano: we reply from our Cantù studio.

Services of interest

To reduce the spam risk you authenticate the domain, keep the list clean, write balanced subject lines and text, and send regularly. Nobody can guarantee 100%, but the Cantù team takes care of these factors for companies in Como, Brianza and Milan.

Sender reputation is the opinion that mail providers form of your domain based on past sends: complaints, bounces, interactions. It is built over time and must be protected. In Cantù we set up sender and sending pace to protect it, for companies in Como and Milan.

To clean an email list you check addresses, exclude those that bounce, manage unsubscribes and review inactive contacts. With synchronisation between website and management system, NewVisibility keeps lists up to date for companies in Como, Brianza and Milan.

The open rate shows how many people open the newsletter, the click rate how many click a link inside it. Together they show whether subject line and content work. From Cantù, in the province of Como, we help companies in Brianza and Milan read these indicators without promising guaranteed results.

An agency's own newsletter platform can be customised and integrated with your website and management system, while an external service is more standard. NewVisibility, in Cantù in the province of Como, works with its own platform for companies in Como, Brianza and Milan.

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