In the field of emailing, two indicators make it possible to evaluate how recipients react to your campaigns: unsubscribes and complaints. Although both reflect a lack of interest or dissatisfaction, their impact and meaning are very different.
While an unsubscribe occurs when a recipient clicks on the unsubscribe link included in an email, a complaint is recorded when a recipient reports an email as spam or junk mail directly from their mailbox (Gmail, Outlook, Yahoo, etc.).
Unlike an unsubscribe, a complaint is perceived by email providers as a negative signal indicating that the sender is sending unwanted messages.
The recipient does not remember having subscribed.
The emails are considered too frequent or intrusive.
The content appears misleading or not very relevant.
The unsubscribe link is difficult to find.
The sender is not clearly identified.
Criterion Unsubscription Complaint
Recipient action | Click on the unsubscribe link | Report as spam |
Impact on sending reputation | Low | High |
Consequence for the sender | Loss of a contact | Potential deterioration of deliverability |
Signal sent to email providers | Normal | Negative |
Best practice? | Yes | No |
A user who unsubscribes simply leaves the mailing list. In contrast, a complaint can affect the reputation of the IP address or sending domain, which may reduce the deliverability of future campaigns to all subscribers.
Email providers closely monitor complaint rates. A high volume can result in emails being placed in the spam folder, or even in the temporary blocking of the sender.
To limit being reported as spam, it is recommended to:
Use a clear and transparent subscription process.
Implement a double opt-in.
Send only relevant content.
Respect the frequency announced at the time of subscription.
Display a visible and functional unsubscribe link.
Unsubscribing and complaining both reflect a desire to no longer receive certain emails, but their impact is very different. Unsubscribing is normal behavior that helps maintain a high-quality database. A complaint, on the other hand, can damage the sender’s reputation and compromise the deliverability of future campaigns. For any effective email marketing strategy, the objective should be to make unsubscribing easy in order to prevent users from choosing the more harmful option: reporting the message as spam.
