Sender Email Changed

When I send a newsletter, it is sent using a different email address than the one set on Newsletter/Settings. You’re using an SMTP plugin When you use an SMTP plugin it could be configured to force the sender email to the one set on that plugin. Check for this option (WP Mail SMTP has it). … Read more

Can I send a newsletter each time a post is published?

With the Automated addon, you can create a channel with a newsletter template configured to extract and include the latest posts, if new ones have been added after the last newsletter has been sent. This channel can be set to be activated every hour: if new content has been added in the last hour a … Read more

cURL error 35: OpenSSL SSL_Connect: SSL_ERROR_SYSCALL in connection to…

This error can be shown by our integration addons with delivery services, like Mailjet, Sendgrid, Mailgun, ElasticEmail, Brevo, SMTP2Go, and Mailersend when testing the connection or even as a reason for a newsletter block due to a fatal error. That error is not a fault of your site but needs to be addressed by your … Read more

What Is Mailtrap and Why We Use It

When it’s time to send emails that seem mysteriously ingurgitated by a black hole, you need to take control of the many steps involved in an email delivery from WordPress. Without entering the details, you should start by checking if the missing email has been generated and “sent”. 99.9% of the time, and we have … Read more

About Automatic and Unwanted Unsubscribe

If you get reported by one of your subscribers about “unwanted opt-out”, you’re not alone. From time to time it happens a subscriber finds his subscription canceled even if he is pretty sure he didn’t trigger it. That is usually due to spam checkers or antivirus software following the unsubscribe link on newsletters. This is … Read more

Images on emails are not showing up

This is a problem that appears randomly and often the same newsletter opened with different clients (Gmail, Outlook, Apple Mail, Yahoo, Thunderbird, Office 365, …) shows different behaviors. Special case is when the images are not shown on iPhone. Short answer: it’s not a problem with your newsletter or the Newsletter plugin. But let’s see … Read more

Error: “Could not instantiate mail function”

This is a rather rare error since the vast majority of hosting providers leave you to use the mailing functionalities of PHP (which is the programming language used to code WordPress). PHP provides the mail() function used by WordPress to send emails, but that function can be disabled. If you get the error “Could not instantiate mail … Read more

This URL has been blocked. Error Code: 4722

This particular error could be seen when saving a newsletter and the action is blocked without any possibility to continue. The message is returned by a hosting provider filter which analyses the content of the sent data (actually your newsletter body, subject, and other parameters) and determines it contains unsafe things. Of course, that is … Read more

Adding Attachments to Newsletters

Quick answer: the Newsletter plugin does not support adding attachments included in your newsletters. We suggest adding a button (CTA – Call to Action) with a link to the file you want to provide to your subscribers storing it in your media library. Reasons Even digital things have weight. If a newsletter can be compared … Read more

Reactivity or CTOR: What It Is and Why It Is So Important

This parameter (you can find it for each newsletter in the Reports Analytics panel, there is a premium version too) measures how many subscribers click on an email after they opened it. We used to call it “reactivity”, but technically it is called “CTOR” (Click to Open Rate). Although it is often put aside, this … Read more