{"id":22175,"date":"2019-07-16T00:00:00","date_gmt":"2019-07-16T00:00:00","guid":{"rendered":"https:\/\/www.mailgun.com\/blog\/como-criar-lista-e-mails-jeito-certo\/"},"modified":"2026-09-16T01:27:46","modified_gmt":"2026-09-16T01:27:46","slug":"como-criar-lista-e-mails-jeito-certo","status":"publish","type":"blog","link":"https:\/\/www.mailgun.com\/pt\/blog\/deliverability\/como-criar-lista-e-mails-jeito-certo\/","title":{"rendered":"Como construir uma lista de e-mails do jeito certo"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">We\u2019ve seen a lot of lists \u2013 good lists, bad lists, ugly lists, and everything in between \u2013 so we can usually tell when a company\u2019s email list is going to cause <a href=\"http:\/\/blog.mailgun.com\/mailgun-announces-improvements-to-logs-feature-to-increase-visibility-into-deliverability-problems\/\" target=\"_tabs\" rel=\"noopener noreferrer\"><u>deliverability problems<\/u><\/a>.<\/p>\n\n<p class=\"wp-block-paragraph\">When someone says, \u201cYeah, I know how to collect email addresses. I\u2019ve got about ten million people on my list. I bought it off the internet a few years ago from a guy named Joe, and\u2026\u201d that raises some red flags (okay, a lot of red flags).<\/p>\n\n<p class=\"wp-block-paragraph\">Look, we know list collection might sound less cool than other email topics. It\u2019s really, really tempting to focus only on the ways you can get more potential customers and a long email list no matter what. <b>But no matter how big your list is, unless your contacts gave you consent to email them, you won\u2019t <\/b><a href=\"http:\/\/blog.mailgun.com\/how-to-get-ip-or-domain-off-email-blacklist\/\" target=\"_tabs\" rel=\"noopener noreferrer\"><u><b>see great results<\/b><\/u><\/a>. Plus, your email service provider (ESP) will get mad at you, and that\u2019s no fun.<\/p>\n\n<p class=\"wp-block-paragraph\">Let\u2019s take a look at what consent is and <b>how you can use it to build a healthy email list<\/b>. Ready? Let\u2019s go.<\/p>\n\r\n    <nav data-content-type=\"longform\" class=\"toc-block longform-spacings px-5 py-6 px-md-6 px-lg-7 py-md-7 bg-light fs-sm rounded-lg\" aria-labelledby=\"toc-title-5433\"><p class=\"h5 m-0\" id=\"toc-title-5433\">\u00cdndice<\/p><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">01<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#what-is-user-consent\">What is user consent?<\/a><a class=\"scrollme link-body-color\" href=\"#single-opt-in\">Single opt-in<\/a><a class=\"scrollme link-body-color\" href=\"#single-opt-in-with-email\">Single opt-in with email<\/a><a class=\"scrollme link-body-color\" href=\"#double-opt-in\">Double opt-in<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">02<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#best-practices-for-list-collection\">Best practices for list collection<\/a><a class=\"scrollme link-body-color\" href=\"#validating-your-emails\">Validating your emails<\/a><a class=\"scrollme link-body-color\" href=\"#being-transparent\">Being transparent<\/a><a class=\"scrollme link-body-color\" href=\"#giving-your-customers-options\">Giving your customers options<\/a><a class=\"scrollme link-body-color\" href=\"#keeping-incentives-to-a-minimum\">Keeping incentives to a minimum<\/a><a class=\"scrollme link-body-color\" href=\"#creating-high-quality-content\">Creating high-quality content<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">03<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#bad-practices-for-list-collection\">Bad practices for list collection<\/a><a class=\"scrollme link-body-color\" href=\"#purchasing-or-renting-lists\">Purchasing or renting lists<\/a><a class=\"scrollme link-body-color\" href=\"#email-appending\">Email appending<\/a><a class=\"scrollme link-body-color\" href=\"#scraping-your-list\">Scraping your list<\/a><a class=\"scrollme link-body-color\" href=\"#only-getting-implied-consent\">Only getting implied consent<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">04<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#wrapping-up\">Wrapping up<\/a><\/div><\/div><\/nav>\n<h2 class=\"wp-block-heading\">What is user consent?<\/h2>\n\n<p class=\"wp-block-paragraph\">Consent is a requirement based on our <a href=\"https:\/\/www.mailgun.com\/legal\/aup\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Acceptable Use Policy<\/a>. And it\u2019s not just us \u2013 you\u2019ll find that every ESP worth their salt requires it as well. There\u2019s a good reason for this: Many countries and regions have created laws to protect consumer consent and require brand communication and data transparency. Some of the most important consent laws include the American <a href=\"https:\/\/www.ftc.gov\/business-guidance\/resources\/can-spam-act-compliance-guide-business\" target=\"_tabs\" rel=\"noopener noreferrer\">CAN-SPAM Act<\/a>, the <a href=\"https:\/\/gdpr.eu\/\" target=\"_tabs\" rel=\"noopener noreferrer\">European General Data Protection Regulation<\/a> (GDPR), and the <a href=\"https:\/\/www.csoonline.com\/article\/3292578\/california-consumer-privacy-act-what-you-need-to-know-to-be-compliant.html\" target=\"_tabs\" rel=\"noopener noreferrer\">California Consumer Privacy Act<\/a> (CCPA).<\/p>\n\n<p class=\"wp-block-paragraph\">By consent, we mean that the people on your list gave you permission to contact them in a specific way about specific things, like updates and those almighty discounts. <b>This permission is vital <\/b>for being able to send messages to subscribers and to protect yourself and them against malicious content and sending actions.\u00a0<\/p>\n\n<p class=\"wp-block-paragraph\">So, how do you get permission during your list collection process? Give your visitors and customers a way to securely and definitively opt into your list. There are<b> three main types of opting in<\/b>, one of which we personally recommend for best results.<\/p>\n\n<h3 class=\"wp-block-heading\">Single opt-in<\/h3>\n\n<p class=\"wp-block-paragraph\">Single opt-in means the user simply submits their email address through a signup form, and they\u2019re immediately added to the list. Easy.<\/p>\n\n<h3 class=\"wp-block-heading\">Single opt-in with email<\/h3>\n\n<p class=\"wp-block-paragraph\">With this option, a user opts in through a signup form and then receives an email that confirms they\u2019ve been added to the list. Slightly less easy, but more effective.<\/p>\n\n<h3 class=\"wp-block-heading\">Double opt-in<\/h3>\n\n<p class=\"wp-block-paragraph\">Double opt-in (as its name implies) requires an additional step. Once the user has signed up through a form, they receive an email with a link. The user must open the email and click the link in order to verify their email address and confirm that they want emails from you.<\/p>\n\n<p class=\"wp-block-paragraph\">At Sinch Mailgun, <b>we highly recommend <\/b><a href=\"https:\/\/www.mailgun.com\/pt\/blog\/email\/duplo-opt-in-com-php-mailgun\/\" target=\"_tabs\" rel=\"noopener noreferrer\"><b>double opt-in<\/b><\/a> because it\u2019ll give you the highest quality list possible. Yes, it\u2019s more work than single opt-in, but it means you\u2019ve got a list full of engaged users with real email addresses. These users are way more likely to actually interact with your messages and not ignore you or mark you as spam.<\/p>\n\n<h2 class=\"wp-block-heading\">Best practices for list collection<\/h2>\n\n<p class=\"wp-block-paragraph\">Beyond opt-in, there are a few other recommended <a href=\"https:\/\/www.mailgun.com\/pt\/blog\/deliverability\/como-gerenciar-sua-lista-de-e-mails\/\" target=\"_tabs\" rel=\"noopener noreferrer\">list-building strategies<\/a> that will ensure you have a great email list made from your target audience and everyone else who really wants to hear from you.<\/p>\n\n<h3 class=\"wp-block-heading\">Validating your emails<\/h3>\n\n<p class=\"wp-block-paragraph\">Validating users\u2019 email addresses during the signup process <b>keeps you from having a lot of nonexistent or spammy addresses<\/b> on your list, plus it can catch users who may have misspelled \u201cgmail\u201d while signing up (you know you\u2019ve done it yourself). Mailgun\u2019s <a href=\"https:\/\/www.mailgun.com\/pt\/email-validation\" target=\"_tabs\" rel=\"noopener noreferrer\">email verification API<\/a> can easily be implemented into forms to prevent typos, disposable addresses, role-based email addresses, and more. You can learn more about it and <a href=\"https:\/\/www.mailgun.com\/pt\/email-validation\" target=\"_tabs\" rel=\"noopener noreferrer\">sign up here<\/a>.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" class=\"wp-image-4466\" width=\"947\" height=\"462\" src=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list1.png\" alt=\"list1\" srcset=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list1.png 947w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list1-300x146.png 300w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list1-768x375.png 768w\" sizes=\"(max-width: 947px) 100vw, 947px\" \/><\/figure>\n\n<h3 class=\"wp-block-heading\">Being transparent<\/h3>\n\n<p class=\"wp-block-paragraph\">Make it clear to the user what exactly it is that they\u2019re signing up for. If submitting their email address will subscribe them to your blog, make sure that\u2019s obvious. For even more transparency and happier users, <b>indicate the frequency of your sending<\/b> so they know what to expect. (And, speaking of blog subscriptions, you can <a href=\"https:\/\/www.mailgun.com\/pt\/blog\/\" target=\"_tabs\" rel=\"noopener noreferrer\">subscribe to our blog<\/a> for more updates on email best practices.) <\/p>\n\n<p class=\"wp-block-paragraph\">Also, make sure you have an unsubscribe button visible in each of your emails. While it may seem counterproductive to your list-building goals, giving users the option to unsubscribe will help your list clean itself of unengaged recipients. This means you\u2019ll get a lot less deliverability-hindering stuff like spam reports and mass ignores.<\/p>\n\n<h3 class=\"wp-block-heading\">Giving your customers options<\/h3>\n\n<p class=\"wp-block-paragraph\">Have you ever been on a list that emails you all the time? You like them, but you don\u2019t like them <i>that<\/i> much. By giving the user the ability to <b>choose the frequency and types of messages<\/b> they receive from you, you\u2019ll retain more users and reduce unsubscribes.<\/p>\n\n<h3 class=\"wp-block-heading\">Keeping incentives to a minimum<\/h3>\n\n<p class=\"wp-block-paragraph\">If you say you\u2019ll give someone something for free, you expose yourself to bad email addresses or throwaway addresses. A lot of people will sign up just to get your freebies or giveaway opportunity, and then quickly unsubscribe \u2013 in fact, our <a href=\"https:\/\/www.pathwire.com\/research\/email-engagement-2021\" target=\"_tabs\" rel=\"noopener noreferrer\">email engagement research<\/a> shows that a full 52.5% of email users will sign up for a brand\u2019s emails just for a one-off discount. Your goal is the opposite: You want to <b>build a highly engaged user base<\/b> that wants to receive the messages they get. Incentives can muddy this.<\/p>\n\n<p class=\"wp-block-paragraph\">Incentives aren\u2019t a terrible way to entice new subscribers, but make sure you offer something substantial beyond them, like an interesting newsletter or brand surveys. These are more likely to help you retain subscribers and minimize one-and-done users.<\/p>\n\n<h3 class=\"wp-block-heading\">Creating high-quality content<\/h3>\n\n<p class=\"wp-block-paragraph\">You can\u2019t avoid creating good content when it comes to building your email list. Each piece of content you create (like product emails, newsletters, confirmation receipts) or the different places you direct your subscribers to (website content like landing pages, instructional content like podcasts, webinars, and videos) needs to be developed with their needs in mind.\u00a0<\/p>\n\n<p class=\"wp-block-paragraph\">At the very, <i>very <\/i>least, <b>your content should be truthful and easy to use<\/b>. Your emails should have honest subject lines and a clear call to action, and any website content should be free of shady pop-up forms, annoying plugin requirements, and other hassles. This is what your email subscribers and website visitors are going to look for.<\/p>\n\n<p class=\"wp-block-paragraph\">Great content means higher engagement. And, since ESPs use engagement rates to decide which emails make it to the inbox instead of the spam folder, great content is also a must for great deliverability. There\u2019s no easy tip or trick that outweighs giving people what they want.<\/p>\n\n<h2 class=\"wp-block-heading\">Bad practices for list collection<\/h2>\n\n<p class=\"wp-block-paragraph\">These are some of the things you don\u2019t want to do while building your list. We won\u2019t spend too much time here, but if you\u2019re doing any of these, stop it.<\/p>\n\n<h3 class=\"wp-block-heading\">Purchasing or renting lists<\/h3>\n\n<p class=\"wp-block-paragraph\">You\u2019ve probably gotten an email, a LinkedIn message, a Facebook ad, or <i>some <\/i>kind of communication offering a super-quick and easy way to rent or purchase a list of new customer addresses. This is, to put it mildly, a bad strategy for email list building.<\/p>\n\n<p class=\"wp-block-paragraph\">When you buy or rent a list, you end up with a huge list of people who never gave you permission to contact them. If you email this list, you\u2019ll definitely end up with an extremely high number of bounces, unsubscribes and spam complaints, which will damage your reputation. You also run the risk of ending up on a blocklist (since <a href=\"http:\/\/blog.mailgun.com\/how-to-get-ip-or-domain-off-email-blacklist\/\" target=\"_tabs\" rel=\"noopener noreferrer\">a lot of these lists contain spam traps<\/a>).<\/p>\n\n<p class=\"wp-block-paragraph\">Building your list organically, on the other hand, takes longer but definitely gives more safety due to the absence of blocklists and spam traps. A good list also <b>increases your deliverability<\/b> and means that your subscribers are more likely to receive (and read) your messages. More readers equals higher engagement and conversion rates, and a happier you.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" class=\"wp-image-4467\" width=\"512\" height=\"409\" src=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list2.png\" alt=\"list2\" srcset=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list2.png 512w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/list2-300x240.png 300w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/figure>\n\n<h3 class=\"wp-block-heading\">Email appending<\/h3>\n\n<p class=\"wp-block-paragraph\">Email appending involves taking the customer data you do know and using it to get that person\u2019s email address from a database. So, if you had Sarah\u2019s name and mailing address, you could find out Sarah\u2019s email address by using an email appending service. This is pretty unethical, and also kind of creepy. Additionally, with these types of tactics, she\u2019s<b> highly unlikely to engage with you<\/b> in any kind of beneficial way.\u00a0 The bottom line is that Sarah didn\u2019t give you her consent, so you definitely shouldn\u2019t email her. Don\u2019t be a creep.<\/p>\n\n<h3 class=\"wp-block-heading\">Scraping your list<\/h3>\n\n<p class=\"wp-block-paragraph\">List scraping is a fast way to build a list, but it\u2019s bad. <i>Very<\/i> bad. Basically, harvesting bots spider different websites, forum posts, and other online sources to obtain lists of email addresses. Again, <b>these people never gave you consent<\/b>. In fact, they probably have no idea who you are, so don\u2019t send messages to them. You won\u2019t get the results you want, only angry unsubscribes.<\/p>\n\n<h3 class=\"wp-block-heading\">Only getting implied consent<\/h3>\n\n<p class=\"wp-block-paragraph\">Implied consent is when a customer provides an email address at the point of sale or on a form, but they never explicitly opt into receiving marketing messages. Implied consent basically <b>disregards this lack of opt-in<\/b> and signs these people up anyway.<\/p>\n\n<p class=\"wp-block-paragraph\">To solve this signup uncertainty, you can potentially add a checkbox to the opt-in form that gives people the chance to sign up, and leave the box unchecked by default. While implied consent\u00a0 isn\u2019t as shady as some of these other bad practices, it&#8217;s <b>definitely not transparent and can lead to more abuse complaints <\/b>(after all, who really pays attention to a little checkbox?). The bottom line is that you\u2019re always better off with explicit consent.<\/p>\n\n<h2 class=\"wp-block-heading\">Wrapping up<\/h2>\n\n<p class=\"wp-block-paragraph\">So, there you have it. When you <b>don\u2019t follow the best practices<\/b> for collecting emails or, worse, you use one or more of the bad practices we mentioned, you open yourself up to low engagement, spam traps, blocklists, complaints, and delivery problems.\u00a0<\/p>\n\n<p class=\"wp-block-paragraph\">However,<b> avoiding these bad practices and committing to good ones will always give you better deliverability and engagement results<\/b>. Again, our biggest recommendation is to go with confirmed opt-in. It\u2019s a fail-safe way to ensure you are getting the best addresses possible to build a highly engaged list. We also highly recommend email validation. Actually, we recommended it so much that we built our own <a href=\"https:\/\/www.mailgun.com\/pt\/email-validation\" target=\"_tabs\" rel=\"noopener noreferrer\">email verification service \u2013 check it out!<\/a><\/p>\n\n<p class=\"wp-block-paragraph\">If delivery problems have been a recurring issue for you, <a href=\"https:\/\/www.mailgun.com\/pt\/managed\" target=\"_tabs\" rel=\"noopener noreferrer\">talk to us about our Managed Service<\/a>. It gives you a <b>dedicated technical account manager<\/b> to proactively monitor your account and help you achieve good, non-bad, and non-ugly deliverability.<\/p>\n\r\n    <aside data-content-type=\"longform\"  class=\"banner-block longform-spacings rounded-lg shadow-lg px-5 py-6 px-md-6 py-md-7 p-lg-7 bg-light\" data-theme=\"dark\" aria-labelledby=\"banner-block-block_635c0398c3645a347bd8d90e46d65668\">\r\n                    <p class=\"text-uppercase section-caption text-body-color\">\r\n                Learn about our Deliverability Services            <\/p>\r\n                            <p class=\"h4 text-accent fw-bold\" id=\"banner-block-block_635c0398c3645a347bd8d90e46d65668\">\r\n                Deliverability Services            <\/p>\r\n                            <div class=\"mb-0 text-body-color\">\r\n                                    <div class=\"content-body mb-0 text-body-color\">Looking to send a high volume of emails? Our email experts can supercharge your email performance. See how we&#x27;ve helped companies like Lyft, Shopify, Github increase their email delivery rates to an average of 97%.<\/div>\r\n                            <\/div>\r\n        \r\n        <div class=\"text-start mt-5\"><a href=\"https:\/\/www.mailgun.com\/pt\/solutions\/servicos-de-entregabilidade-lp\/\"  class=\"btn btn-secondary\" >Learn more<\/a><\/div>\r\n    <\/aside>\r\n\r\n","protected":false},"excerpt":{"rendered":"<p>Criando uma lista de e-mails? Temos dicas sobre as melhores pr\u00e1ticas de coleta (e sobre o que evitar). Leia mais&#8230;<\/p>\n","protected":false},"author":20,"featured_media":4376,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"blog_category":[21],"class_list":["post-22175","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-deliverability"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Como criar uma lista de e-mails do jeito certo - Transactional Email API Service For Developers | Mailgun<\/title>\n<meta name=\"description\" content=\"Criando uma lista de e-mails? Temos dicas sobre as melhores pr\u00e1ticas de coleta (e dicas sobre o que evitar). Leia mais...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mailgun.com\/pt\/blog\/deliverability\/como-criar-lista-e-mails-jeito-certo\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como criar uma lista de e-mails do jeito certo - Transactional Email API Service For Developers | Mailgun\" \/>\n<meta property=\"og:description\" content=\"Criando uma lista de e-mails? Temos dicas sobre as melhores pr\u00e1ticas de coleta (e dicas sobre o que evitar). 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