> ## Documentation Index > Fetch the complete documentation index at: https://help.maestra.io/llms.txt > Use this file to discover all available pages before exploring further. # How to Find Customers Who Interacted with More Than One Campaign > Applies to Email, SMS, Mobile Push, and Other Channels # **How to find customers** Go to **Customer Data Platform→ Customers**. ## Searching by campaign status In the **Campaigns** filter group, select the status you need. * Find customers who have been sent a campaign at least once. * Find customers who have never been sent a campaign. * Find customers who have at least one campaign send failure. * Find customers who have at least one undelivered campaign. * Find customers who have opened any campaign at least once. * Find customers who have never opened the campaigns sent to them. ​**Note:** Make sure to include **campaign sends** in the filter. Otherwise, the filter will also return customers who were never on any campaign recipient list, since they have no open events. * Find customers who have clicked any link in a campaign at least once. * Find customers who have clicked an unsubscribe link at least once. * Find customers who have participated in a campaign at least once (were on the recipient list). ## Searching by campaign group: channel, type, folder, topic, tags Each **status filter** has a nested **Campaigns** condition, where you can specify which [type of campaigns](/campaigns/types-of-campaigns-available-in-maestra) to search for. Available filtering options: * Campaign type (automated, bulk, transactional) * Topics * Folders * Channels (Email, SMS, MobilePush, WebPush, WhatsApp) * Tags * Brands * Find customers have been sent mobile push campaigns. * Find customers who opened automated campaigns. * Find customers who clicked campaigns from a specific folder. * Find customers who failed to receive a campaign with a specific tag (send or delivery failed). ## Searching by interaction time * Find customers who were sent campaigns in the first half of 2024. * Find customers who were sent campaigns within the last six months. * Find customers who have clicked on automated email campaigns within the last hour. ## Searching by number of interactions * Find customers who were sent four or more web pushes in the last month. # How to find specific Campaign engagements (e.g. clicked, sent, opened etc.) Go to **Customer Data Platform → Campaign engagements**. * Find all campaign opens. * Find all clicks on automated web pushes from a folder. * Find all undelivered SMS in the last 15 minutes.