If you're having a problem sending emails to certain Contact records, it may be because their settings haven't been activated for that kind of correspondence or perhaps the contact has unsubscribed.
You can find this out by opening the Contact record, and in the Contact tab scrolling down to the Mailings settings section:
Make sure your contact is set to receive the appropriate emails and offers by selecting the tick boxes.
When a contact is set to receive mailing campaigns from you, this tag will display for their Contact record in both their Preview pane as well as the 'Contact' edit screen:
These contacts will automatically display in the view Contacts > Views > Emailing list.
If they do not have this label, they will not be able to receive your mailing campaigns.
For a contact to be included in the recipient list and to receive your email campaign they also need to:
- Have an email address.
- Be selected as on your emailing list, and not have 'Unsubscribed'.
- Not be marked as 'deceased'.