Having your unsubscribe list from your old ESP is very important. When upgrading to your new ESP, you will want to import this list so that your mailing lists are up to date. If you're switching to MailUp, you can easily import a list of 'as unsubscribed' recipients, and also keep unsubscribes in sync between systems during the transition period using the MailUp API. See our help guide for more information and use cases. Also, if you have any signup forms or apps connected to your ESP, be sure to update those as well. #5: Keep track of your followers When changing EPS, be sure to keep track of your followers' level of engagement . For example, export subscribers from your existing ESP based on their level of engagement and import them into focus groups in the new ESP (e.g., “very active” vs. “somewhat inactive” subscribers).
This is important because switching to the new ESP can trigger a loss of messaging activity data, so engagement information will be difficult to retrieve if you haven't saved it first. Your new ESP will not know your subscribers initially! #6: Know who manages your company's DNS records Know who in your company manages the DNS records for your E-Commerce Photo Editing Service sending domains and who can access them. At some point, you'll need to ask someone at your company (or do it yourself) to update the DNS records settings, such as adding an SPF record. Timely DNS record management can help you avoid any delays or deliverability issues due to outdated DNS records. #7: One step at a time. Take your time! Changing ESPs takes time and you want the transition to be as smooth as possible.
So take it one step at a time! Even more so if you send millions of emails per month, as you may experience unexpected delays or throttling. Start by importing your most engaged subscribers and campaigns to the new platform with low send volumes. This way, you'll give inbox providers time to detect changes in your emails without raising red flags such as throttling your inbox volumes or blocking your emails altogether. Again, this should be a gradual process until your sender reputation has transferred to the new ESP. As a first step, wait to introduce inactive subscribers (i.e. inactive for more than 3 months) to your new ESP mailing list. This avoids the risk of being penalized too harshly for less than ideal engagement from your recipients while you're still building your "new" sender reputation. It also helps you to avoid any risk of emails being sent to spam traps. Take extra care in dealing with unsubscribed recipients: we've seen too many cases where they were mistakenly imported as subscribers, leading to an increase in spam complaints and tough sender reputation issues to solve. Our deliverability team is here to help!