If the number of recipients is lower than the total number of contacts in your Contacts section, it means that some of them are no longer eligible to receive email communications.
This is usually due to their status:

• Unsubscribed – contacts who have voluntarily opted out of receiving your emails;
• Inactive – contacts who have not opened more than 20 of your newsletters in a row; they are automatically excluded to help protect your sender reputation;
• Bounced – email addresses that can no longer be reached because they are invalid, no longer exist, or their mailbox has technical issues.

To check how many contacts fall into these categories, please refer to the dedicated guide on how to search contacts by status.
Other issues such as incorrect syntax or bounces generated during the newsletter send are visible directly in the newsletter analisys panel.

After sending, your newsletter may temporarily appear with the status Sending.

 

This is completely normal. However, if the status remains for an extended period of time, it is usually due to one of the following reasons:

• your account is sending multiple newsletters at the same time to a high number of recipients;

• many other accounts are simultaneously sending large newsletters to their own audiences.

Both situations increase the overall sending load and may slow down delivery.
It’s important to remember that sending is never blocked, only slowed down: the newsletter will still be delivered to all recipients.

If you notice that the blue aeroplane icon (indicating that the newsletter is still being sent) remains visible for a long time, please follow these simple rules:

• BE PATIENT – allow the sending queue to process naturally.
• DO NOT DUPLICATE the newsletter while it is still sending.
• If you have already duplicated it, DO NOT SEND IT AGAIN — otherwise your recipients will receive the same email twice.

We strongly recommend waiting without taking further action.
The newsletter will be delivered as soon as the sending queue has cleared.

Unfortunately, no. Once you click Send, the newsletter enters the delivery queue immediately and there is no technical way to interrupt the process — even if the email has not yet been delivered to all recipients. 
To reduce the risk of mistakes in the future, we recommend:

• always sending a test email to yourself before the final send — you can do this using the flask icon  in the top-right corner;

• scheduling the newsletter a few minutes ahead, giving you time for a final check.

For privacy and compliance reasons, the contact must re-subscribe personally. Neither you nor the Artshell team can manually re-activate them.

To invite the contact to subscribe again:

1. Open the settings panel by clicking the  icon at the bottom right.
2. Select Newsletter subscription form.
3. If it is not yet active, enable it using the toggle . 
4. Copy the link shown in the Subscription form link field and send it to the contact so they can subscribe again.

No, this is not possible — and for very good reasons:

• It is legally required: many jurisdictions, including the European Union under GDPR, require that marketing emails provide a simple way for recipients to withdraw their consent.
  In Italy, the Data Protection Code also mandates that users must be able to unsubscribe easily.
• Removing it may result in severe penalties.
• It is best practice: it builds trust and reduces the risk of being marked as spam.