# Are there restrictions on using mailing lists?

Mailing list

##### Post Metadata
- Posted at: over 8 years ago
- Net upvotes: 1


## Comments
### Comment 1

SMTP2GO has strict rules for sending to lists that contain more than 100 email addresses. The following rules must be followed when sending to such lists:

Lists must be 100% opted-in. This means that you must have obtained the permission of your recipients to send them emails. Examples of lists that are not allowed are purchased lists, email addresses scoured from the internet, and marketing leads.
In addition, lists must be up-to-date, and have had emails sent to them recently (within the previous three months). We closely monitor the percentage of bouncing/invalid email addresses and take action where necessary.
An opt-out (unsubscribe) link must be placed at the bottom of each email which will allow the recipients to immediately remove themselves from the list.
Emails must not contain content related to the industries mentioned in the terms of service.

##### Comment Metadata
- Posted at: over 8 years ago
- Author title: Customer Success Engineer at SMTP2GO




## Related Product
[SMTP2GO](https://www.g2.com/products/smtp2go/reviews)

## Related Category
[Transactional Email](https://www.g2.com/categories/transactional-email)

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