Deliverability

Laposta ensures that your newsletters actually arrive in the 'inbox' of your contacts. Everything is technically arranged perfectly, and we make sure that no spam is sent via our servers.
What does Laposta do to maintain good deliverability?

To ensure that your newsletter is actually delivered to your contacts, it must be prevented from getting stuck in a spam filter or ending up in a junk mail folder. And the magic word for that is: deliverability.

Laposta helps you achieve excellent deliverability. This doesn't happen automatically, but requires our continuous attention. Good deliverability is no more self-evident than a good ranking in search engines. Just as algorithms in search engines are regularly updated, spam filter techniques are continually being refined to discourage spammers.

Three main factors play a role in deliverability:

  • The reputation of the (technical) sender

  • The reputation of the sender, and 

  • The content and layout of your newsletter

The sender reputation is our responsibility. The sender reputation and the content and layout of your newsletters are (partly) your responsibility. What you can do to prevent spam filters from blocking your newsletter can be found here [].

This is how we monitor the quality of your list(s)

  • Contacts that result in a hard bounce are automatically unsubscribed from your list. 

  • Contacts that result in a soft bounce after six consecutive newsletters are also automatically unsubscribed from your list.

  • Spam-sensitive matters, such as adding an attachment to your newsletter, are not allowed by our program without restrictions.

  • You must first verify sender addresses with us.

  • We use SPF, Sender ID, and DKIM.

A brief explanation of that last technical point. With SPF, Sender ID, and DKIM, we credential ourselves as an email sender. With SPF (Sender Policy Framework and Sender ID), your contact's mail server can check whether our mail server is authorized to send your newsletter. With DKIM (Domain Keys Identified Mail), your contact's mail server can verify whether our signature matches the signature of your newsletter.

Finally, as a sender of newsletters, you share your IP addresses with others at Laposta. This is common practice. However, it does mean that your sending reputation is partly dependent on the sending reputation of other customers with whom you share an IP address. 

Just as we monitor your sending reputation, we also monitor that of other customers. We automatically rank the newsletters of our customers based on quality and assign them to different sending clusters to keep the quality of our delivery as high as possible. 

Moreover, providers are placing increasing importance on your domain reputation rather than your IP reputation when assessing your sending reputation. 

Larger customers can establish a completely independent sending reputation within Laposta through a dedicated IP address. You can obtain more information about this from our helpdesk.