Every WordPress website needs to communicate with its visitors via email. For this, WordPress offers a really rudimentary function called wp_mail(), which also is used by almost all plugins for this purpose.
However, wp_mail() has many weaknesses:
- Emails are sent as soon as the function is executed, which can slow down the website heavily
- Emails are sent via the web server, which offers no configuration options and no functionality that is required for the safe arrival of each email at the recipient
- often this web server is not configured in the DNS
- a web server is not able to digitally sign e-mails – an important functionality in today’s internet for e-mails to reach the recipient
As a result, to the chagrin of every webmaster, many emails from WordPress end up in the recipient’s spam folder or are even lost completely.
For this reason there are a variety of plugins that replace the wp_mail() function and send all emails from WordPress via an SMTP server. The website operator must have one – or alternatively use external SMTP services. Such as Gmail, although this service only allows a small number of daily emails.
When it comes to larger amounts of emails – e.g. newsletters – you cannot avoid a paid SMTP service. And that can get really expensive!
Campation PostOffice™ is the only WordPress email plugin that takes a different approach.
With its own background sending technology (Campation SpeedMail) – like WordPress wp_mail() – it actually uses the email functionality of the web server (the so-called “Mail Transport Agent”), but in such a way that every email reaches 100% of the recipient.
This is realized by a DNS wizard, which correctly configures the public properties of the web server for sending emails, and the digital signature of each email.
In addition, Campation PostOffice™ has a large number of functions that not only contribute to the secure sending of e-mails, but also to the very fast sending of large amounts of e-mail. For this purpose, the plugin has a parallel transmission technology that – assuming the appropriate server hardware – can easily transmit 100 emails / second to the Internet.