{"id":83200,"date":"2024-12-17T12:47:18","date_gmt":"2024-12-17T12:47:18","guid":{"rendered":"https:\/\/mailrelay.com\/glosario\/base-de-datos-de-email\/"},"modified":"2026-10-20T13:55:31","modified_gmt":"2026-10-20T13:55:31","slug":"email-database","status":"publish","type":"glossary","link":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/","title":{"rendered":"Email database"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>An email database is an organized record of email addresses belonging to people who are interested in your product, service or content. <\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">However, it is not just a matter of accumulating random emails. <\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Its real value lies in the quality of the data and how you use it.<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">You&#8217;ve probably heard it called other things: mailing list, subscriber list or email marketing database. They&#8217;re all the same thing. Don&#8217;t confuse it with a <a href=\"https:\/\/mailrelay.com\/en\/blog\/2018\/07\/12\/how-to-create-a-customer-database-step-by-step-with-examples\/\">customer database<\/a>, which stores all the business information about the people who have already bought from you, whether or not they have an email address.<\/p>\n\n<h2 class=\"wp-block-heading\">What does an email database contain?<\/h2>\n\n<p class=\"wp-block-paragraph\">In its simplest form, it includes only email addresses, but a well-optimized database can (and should) include:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>First and last name:<\/strong> lets you personalize messages and give them a more human touch.<\/li>\n\n\n\n<li><strong>Geographic location: <\/strong> ideal for segmenting your audience by region.<\/li>\n\n\n\n<li><strong>Interests or preferences: <\/strong> it will help you send relevant content.<\/li>\n\n\n\n<li><strong>Purchase or interaction history: <\/strong> key information for loyalty strategies.<\/li>\n\n\n\n<li><strong>Signup date and source:<\/strong> when each contact subscribed and through which form. It helps you prove that you have their consent.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">For example, if you run an online store, knowing which products each customer has purchased will allow you to send them personalized recommendations, increasing the probability of conversion.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"864\" src=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains.jpg\" alt=\"Infographic with a contact card and the six pieces of data in an email database: email, first and last name, location, interests, purchase history, and signup date and source\" class=\"wp-image-107418\" srcset=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains.jpg 1536w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains-300x169.jpg 300w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains-1024x576.jpg 1024w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains-768x432.jpg 768w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains-110x62.jpg 110w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains-60x34.jpg 60w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n\n<div class=\"wp-block-group has-very-light-gray-background-color has-background\" style=\"border-radius:8px;padding-top:24px;padding-right:28px;padding-bottom:24px;padding-left:28px\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Build your email database with permission<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Subscription forms with double opt-in and up to 20,000 contacts for free.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-mailrelay-primary-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/mailrelay.com\/en\/signup\/?utm_medium=cta&#038;utm_campaign=base-de-datos-de-email\">Create a free account<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<h2 class=\"wp-block-heading\">Why is it important to have an email database?<\/h2>\n\n<p class=\"wp-block-paragraph\">In a world saturated with information, <a href=\"https:\/\/mailrelay.com\/en\/blog\/2022\/09\/18\/what-is-email-marketing\/\">email marketing<\/a> is still one of the most effective ways to communicate with customers. <\/p>\n\n<p class=\"wp-block-paragraph\">Without an organized and well-segmented database, you will not be able to take advantage of its full potential.<\/p>\n\n<h3 class=\"wp-block-heading\">It lets you personalize your emails<\/h3>\n\n<p class=\"wp-block-paragraph\">A database rich in detail allows you to send more personalized and relevant emails. <\/p>\n\n<p class=\"wp-block-paragraph\">Imagine receiving a message that seems to be written especially for you, isn&#8217;t it much more attractive than a generic email? <\/p>\n\n<p class=\"wp-block-paragraph\">Personalized emails tend to get more opens and clicks than generic ones.<\/p>\n\n<h3 class=\"wp-block-heading\">It increases customer retention<\/h3>\n\n<p class=\"wp-block-paragraph\">By using the information in your database, you can design effective loyalty campaigns, such as <strong>exclusive promotions for repeat customers<\/strong> or birthday reminders.<\/p>\n\n<h3 class=\"wp-block-heading\">Resource optimization<\/h3>\n\n<p class=\"wp-block-paragraph\">Not all your customers have the same needs. <\/p>\n\n<p class=\"wp-block-paragraph\">A well-segmented database prevents you from wasting resources sending messages to people who are not interested in certain products or services.<\/p>\n\n<h2 class=\"wp-block-heading\">How to build an email database from scratch<\/h2>\n\n<p class=\"wp-block-paragraph\">If you are just starting out, building a database may seem like a daunting task. <\/p>\n\n<p class=\"wp-block-paragraph\">However, with the right strategies, it&#8217;s easier than you think. <\/p>\n\n<p class=\"wp-block-paragraph\">Here are a few ideas:<\/p>\n\n<h3 class=\"wp-block-heading\">Create attractive subscription forms<\/h3>\n\n<p class=\"wp-block-paragraph\">Your <a href=\"https:\/\/mailrelay.com\/en\/glossary\/subscription-form\/\">subscription form<\/a> is the gateway. <\/p>\n\n<p class=\"wp-block-paragraph\">Make sure it&#8217;s clear, easy to fill in and highlights the benefits of joining. <\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Offering an incentive, such as a discount<\/strong> or exclusive content, <strong>can significantly increase your conversion rate.<\/strong><\/p>\n\n<h3 class=\"wp-block-heading\">Offer useful content<\/h3>\n\n<p class=\"wp-block-paragraph\">Users are more willing to share their data if they receive something in return. <\/p>\n\n<p class=\"wp-block-paragraph\">An eBook, a free course or a practical guide are examples of resources that can convince people to join your list.<\/p>\n\n<h3 class=\"wp-block-heading\">Promote it on social media<\/h3>\n\n<p class=\"wp-block-paragraph\">Use your social media profiles to invite your followers to subscribe. <\/p>\n\n<p class=\"wp-block-paragraph\">Targeted advertising campaigns can also help you reach new audiences.<\/p>\n\n<h3 class=\"wp-block-heading\">Don&#8217;t buy databases<\/h3>\n\n<p class=\"wp-block-paragraph\">Although it may seem like a quick fix, buying databases is a practice you should avoid at all costs. <\/p>\n\n<p class=\"wp-block-paragraph\">Sending unsolicited emails can damage your brand&#8217;s reputation.<\/p>\n\n<p class=\"wp-block-paragraph\">In addition, sending to contacts who haven&#8217;t given their consent breaches the GDPR. We explain it in <a href=\"https:\/\/mailrelay.com\/en\/blog\/2018\/08\/09\/buy-email-databases\/\">why you shouldn&#8217;t buy email databases<\/a>.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"864\" src=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission.jpg\" alt=\"Infographic with four steps to build an email database with permission: a clear subscription form, an incentive, promotion on social media and double opt-in confirmation, plus a warning not to buy databases\" class=\"wp-image-107416\" srcset=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission.jpg 1536w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission-300x169.jpg 300w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission-1024x576.jpg 1024w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission-768x432.jpg 768w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission-110x62.jpg 110w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/build-email-database-with-permission-60x34.jpg 60w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">Keep your database clean and up to date<\/h2>\n\n<p class=\"wp-block-paragraph\">An email database isn&#8217;t something you create once and forget about. To keep it useful, you should clean it every so often. <\/p>\n\n<p class=\"wp-block-paragraph\">Here are some tips:<\/p>\n\n<h3 class=\"wp-block-heading\">Remove inactive contacts<\/h3>\n\n<p class=\"wp-block-paragraph\">If someone hasn&#8217;t opened your emails in months, consider deleting them or including them in a reactivation campaign.<\/p>\n\n<h3 class=\"wp-block-heading\">Stop sending to addresses that bounce<\/h3>\n\n<p class=\"wp-block-paragraph\">An address that <a href=\"https:\/\/mailrelay.com\/en\/glossary\/hard-bounce\/\">hard bounces<\/a> doesn&#8217;t exist or no longer accepts email. If you keep sending to it, mailbox providers start to distrust you. At Mailrelay, addresses that hard bounce are never sent to again.<\/p>\n\n<h3 class=\"wp-block-heading\">Update the information<\/h3>\n\n<p class=\"wp-block-paragraph\">Allow your users to update their data easily. <\/p>\n\n<p class=\"wp-block-paragraph\">This will help you keep your messages relevant.<\/p>\n\n<h2 class=\"wp-block-heading\">Relationship between a database and email marketing<\/h2>\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/mailrelay.com\/en\/glossary\/email-marketing\/\">Email marketing<\/a> and databases are inherently linked. <\/p>\n\n<p class=\"wp-block-paragraph\">Without a solid database, no campaign will work. <\/p>\n\n<p class=\"wp-block-paragraph\">On the other hand, a good email marketing system, like the one Mailrelay offers, can help you get the most out of your list.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>A well-executed strategy includes:<\/strong><\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Precise segmentation: <\/strong>split your contacts into specific groups by interests, location or behavior, with <a href=\"https:\/\/mailrelay.com\/en\/glossary\/subscriber-groups\/\">subscriber groups<\/a> and segments.<\/li>\n\n\n\n<li><strong>Automation: <\/strong> send automatic emails based on specific actions, such as an abandoned cart.<\/li>\n\n\n\n<li><strong>Analytics: <\/strong> constantly review metrics to understand what&#8217;s working and what&#8217;s not.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Tools for managing your email database<\/h2>\n\n<p class=\"wp-block-paragraph\">To keep your database organized, it is key to have quality tools. If you already have your contacts in a spreadsheet or another tool, the first step is to <a href=\"https:\/\/mailrelay.com\/en\/glossary\/import-contacts\/\">import them<\/a>.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Platforms like Mailrelay allow you not only to manage your contacts, but also to design and send effective campaigns.<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Some of the most useful features include:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Advanced segmentation<\/li>\n\n\n\n<li>Detailed reports<\/li>\n\n\n\n<li>Integration with web forms<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">These tools not only make your work easier, but also improve the user experience, and that helps build lasting relationships.<\/p>\n\n<h2 class=\"wp-block-heading\">How Mailrelay helps you<\/h2>\n\n<p class=\"wp-block-paragraph\">With Mailrelay, you build your email database with permission from the start. Subscription forms always use double opt-in, so every contact confirms their address before joining your list.<\/p>\n\n<p class=\"wp-block-paragraph\">If you already have contacts, you can import them from a CSV file, by pasting them or directly from Mailchimp or HubSpot. Then you organize them into groups and segments, store their data in custom fields and send each one what interests them. Unsubscribes are handled automatically, and addresses that hard bounce are not sent to again. The free account includes up to 20,000 contacts.<\/p>\n\n<div class=\"wp-block-group has-very-light-gray-background-color has-background\" style=\"border-radius:8px;padding-top:24px;padding-right:28px;padding-bottom:24px;padding-left:28px\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Organize your list from a single dashboard<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Import your contacts, organize them into groups and segments and send to the right people.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-mailrelay-primary-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/mailrelay.com\/en\/signup\/?utm_medium=cta&#038;utm_campaign=base-de-datos-de-email\">Start for free<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<h2 class=\"wp-block-heading\">Related entries<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/import-contacts\/\">Import contacts<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/subscriber-groups\/\">Subscriber groups<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/custom-fields\/\">Custom fields<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/subscription-form\/\">Subscription form<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/double-opt-in\/\">Opt-in and double opt-in<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/lead-magnet\/\">Lead magnet<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/subscriber\/\">Subscriber<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/hard-bounce\/\">Hard bounce<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/spamtraps\/\">Spamtraps<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/gdpr\/\">GDPR<\/a><\/li>\n<\/ul>\n","protected":false},"template":"","class_list":["post-83200","glossary","type-glossary","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Email database: what it is and how to build one with permission<\/title>\n<meta name=\"description\" content=\"What an email database is, what data to store, how to build one with permission from scratch and how to keep it clean for your email marketing campaigns.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mailrelay.com\/en\/glossary\/email-database\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Email database: what it is and how to build one with permission\" \/>\n<meta property=\"og:description\" content=\"What an email database is, what data to store, how to build one with permission from scratch and how to keep it clean for your email marketing campaigns.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mailrelay.com\/en\/glossary\/email-database\/\" \/>\n<meta property=\"og:site_name\" content=\"Mailrelay\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Mailrelay\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-20T13:55:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/que-contiene-una-base-de-datos-de-email.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1672\" \/>\n\t<meta property=\"og:image:height\" content=\"941\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@mailrelay\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/\",\"url\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/\",\"name\":\"Email database: what it is and how to build one with permission\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/mailrelay.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/what-an-email-database-contains.jpg\",\"datePublished\":\"2024-12-17T12:47:18+00:00\",\"dateModified\":\"2026-10-20T13:55:31+00:00\",\"description\":\"What an email database is, what data to store, how to build one with permission from scratch and how to keep it clean for your email marketing campaigns.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/#primaryimage\",\"url\":\"https:\\\/\\\/mailrelay.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/what-an-email-database-contains.jpg\",\"contentUrl\":\"https:\\\/\\\/mailrelay.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/what-an-email-database-contains.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/glossary\\\/email-database\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Email database\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/\",\"name\":\"Mailrelay\",\"description\":\"Mailrelay.com - Email Marketing Software\",\"publisher\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#organization\",\"name\":\"Mailrelay\",\"url\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/mailrelay.com\\\/wp-content\\\/uploads\\\/2019\\\/05\\\/mailrelay-logo.jpg\",\"contentUrl\":\"https:\\\/\\\/mailrelay.com\\\/wp-content\\\/uploads\\\/2019\\\/05\\\/mailrelay-logo.jpg\",\"width\":613,\"height\":291,\"caption\":\"Mailrelay\"},\"image\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/Mailrelay\\\/\",\"https:\\\/\\\/x.com\\\/mailrelay\",\"https:\\\/\\\/www.youtube.com\\\/mailrelay-email-marketing\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Email database: what it is and how to build one with permission","description":"What an email database is, what data to store, how to build one with permission from scratch and how to keep it clean for your email marketing campaigns.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/","og_locale":"en_US","og_type":"article","og_title":"Email database: what it is and how to build one with permission","og_description":"What an email database is, what data to store, how to build one with permission from scratch and how to keep it clean for your email marketing campaigns.","og_url":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/","og_site_name":"Mailrelay","article_publisher":"https:\/\/www.facebook.com\/Mailrelay\/","article_modified_time":"2026-10-20T13:55:31+00:00","og_image":[{"width":1672,"height":941,"url":"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/que-contiene-una-base-de-datos-de-email.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_site":"@mailrelay","twitter_misc":{"Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/","url":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/","name":"Email database: what it is and how to build one with permission","isPartOf":{"@id":"https:\/\/mailrelay.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/#primaryimage"},"image":{"@id":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/#primaryimage"},"thumbnailUrl":"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains.jpg","datePublished":"2024-12-17T12:47:18+00:00","dateModified":"2026-10-20T13:55:31+00:00","description":"What an email database is, what data to store, how to build one with permission from scratch and how to keep it clean for your email marketing campaigns.","breadcrumb":{"@id":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/mailrelay.com\/en\/glossary\/email-database\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/#primaryimage","url":"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains.jpg","contentUrl":"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/what-an-email-database-contains.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/mailrelay.com\/en\/glossary\/email-database\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/mailrelay.com\/en\/"},{"@type":"ListItem","position":2,"name":"Email database"}]},{"@type":"WebSite","@id":"https:\/\/mailrelay.com\/en\/#website","url":"https:\/\/mailrelay.com\/en\/","name":"Mailrelay","description":"Mailrelay.com - Email Marketing Software","publisher":{"@id":"https:\/\/mailrelay.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/mailrelay.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/mailrelay.com\/en\/#organization","name":"Mailrelay","url":"https:\/\/mailrelay.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/mailrelay.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/mailrelay.com\/wp-content\/uploads\/2019\/05\/mailrelay-logo.jpg","contentUrl":"https:\/\/mailrelay.com\/wp-content\/uploads\/2019\/05\/mailrelay-logo.jpg","width":613,"height":291,"caption":"Mailrelay"},"image":{"@id":"https:\/\/mailrelay.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/Mailrelay\/","https:\/\/x.com\/mailrelay","https:\/\/www.youtube.com\/mailrelay-email-marketing"]}]}},"uagb_featured_image_src":[],"uagb_author_info":{"display_name":"Jose Argudo","author_link":"https:\/\/mailrelay.com\/en\/blog\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"An email database is an organized record of email addresses belonging to people who are interested in your product, service or content. However, it is not just a matter of accumulating random emails. Its real value lies in the quality of the data and how you use it. You&#8217;ve probably heard it called other things:&hellip;","_links":{"self":[{"href":"https:\/\/mailrelay.com\/en\/wp-json\/wp\/v2\/glossary\/83200","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mailrelay.com\/en\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/mailrelay.com\/en\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":10,"href":"https:\/\/mailrelay.com\/en\/wp-json\/wp\/v2\/glossary\/83200\/revisions"}],"predecessor-version":[{"id":107484,"href":"https:\/\/mailrelay.com\/en\/wp-json\/wp\/v2\/glossary\/83200\/revisions\/107484"}],"wp:attachment":[{"href":"https:\/\/mailrelay.com\/en\/wp-json\/wp\/v2\/media?parent=83200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}