This document contains information about how to best proceed when sending mass emails to the campus community using your own service,
DoIT WiscList, or DoIT Mass Email. By following these guidelines, you can reduce system load, prevent unintended outages, maintain a positive
relationship with your audience, and reduce complaints and calls to your Help Desk.
Due to the large populations of Mass Email audiences, improper preparation can cause service outages and/or significant delay when sending a mailing.
- Mailing System Considerations
- Can the email servers handle your message?
- Will your email take a considerable time to transmit?
- Will it reduce the capacity of the email service in any way?
- Are there other important communications that may be inhibited while the email service you’re using is under increased load?
- Service Load: If your email instructs the readers to link to another service, such as My UW, Learn@UW or other enterprise
applications, be aware of the limitations of those services.
Email Content/Delivery Impact
Follow these guidelines to ensure your mailing is successfully delivered to your intended audience.
- The best time to send mass emails is very early in the morning or at the end of the business day.
Delivery time for mass email and all campus email will increase if sent during the middle of the business day.
- Sending emails in batches helps mitigate the negative impact of mass emails (the Mass Email service does this for you).
- Load on email services is reduced so that normal operation can continue.
- User interaction will be spread out and reduce the likelihood of a service outage.
- Digitally signing mass emails gives the audience reassurance the message is legitimate. Visit
UW Digital ID for more information.
- Consider the size of attachments. Sending even small attachments to thousands of people increases the processing and delivery time
for all email across campus. WiscList imposes a 5MB limit per message. This includes message content and attachments.
- Many email systems, including WiscList, impose limits on the number of messages you may send per minute, hour or day. See
WiscMail Terms of Service - Throttling for details.
- Eliminate duplicate messages by making sure you are not sending to the same recipient from multiple lists.
- Be sure that the content is relevant to the target audience. This can avoid unnecessary support calls to the Help Desk and limit reader frustration.
- Ask a third party to review your message for clarity, accuracy, and link functionality.
Remember that it is better to take the time to get it right the first time than to deal with the consequences of an oversight in a mass email.