At SharpSpring, we recommend that all marketing Emails include a "Permission Reminder". This short text, often found at the bottom of the Email, clarifies to subscribers how they signed up.
A Permission Reminder often looks something like this:
"You are receiving this mail because you signed up for a weekly updates at sharpspring.com. Click here to unsubscribe at any time."
The importance of a Permission Reminder comes from spam complaints. Emails from senders that recipients don't recognize can be flagged as spam, and this harms your reputation and future deliverability to other recipients, even if they interacted favorably with your messaging.
The main characteristic of good Permission Reminders is that they are specific. This means that the wording is clear on why the subscriber is being emailed now; such as being a current customer, attending an event, or subscribing to updates from you. Don't be ambiguous and cause customers to question whether they actually did sign up. This encourages your recipients to flag the mail as spam, which is exactly what we are aiming to avoid.
If you're looking for more information to help get your messages to the inbox, check out our article on Email Best Practices.