{"id":90915,"date":"2026-08-17T19:19:50","date_gmt":"2026-08-17T19:19:50","guid":{"rendered":"https:\/\/mailrelay.com\/blog\/2026\/08\/17\/client-letters\/"},"modified":"2026-08-17T19:23:44","modified_gmt":"2026-08-17T19:23:44","slug":"client-letters","status":"publish","type":"post","link":"https:\/\/mailrelay.com\/en\/blog\/2026\/08\/17\/client-letters\/","title":{"rendered":"Client Letters: How to Write Them Successfully? Types and Examples"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Writing a <strong>letter to a client<\/strong> might seem like something from the last century, but the reality is quite different. In the midst of digital saturation, receiving a well-written, clear, and personalized message is a breath of fresh air that builds trust in your brand.<\/p>\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re a large corporation or an SMB, knowing how to address your audience in writing is a skill that separates businesses that sell from those that simply &#8220;spam&#8221;.<\/p>\n\n<p class=\"wp-block-paragraph\">In this article, we&#8217;ll dive deep into mastering the <strong>client letter<\/strong>, what types exist, and how you can use Mailrelay to make the process automatic, professional, and above all, effective.<\/p>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n<h2 class=\"wp-block-heading\"><strong>What is a client letter?<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">When we talk about a <strong>letter to a client<\/strong>, we refer to any formal message sent with a strategic goal. It isn&#8217;t a simple WhatsApp message or a social media comment.<\/p>\n\n<p class=\"wp-block-paragraph\">It&#8217;s a document (usually digital via email) where the company takes the time to explain something important. Its value lies in the <strong>authority<\/strong> and the <strong>attention<\/strong> it demands from the recipient.<\/p>\n\n<p class=\"wp-block-paragraph\">Whether sharing good news or reporting a technical change, the <strong>informative letter<\/strong> acts as the official bridge between your business and the person who trusts you.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>What are the 3 types of formal client letters?<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">Although you could write for a thousand reasons, most <strong>company letters to clients<\/strong> fall into three broad categories. Understanding which one you are sending will help you strike the right tone.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Thank you letter (Loyalty)<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">This is likely the letter with the best long-term return on investment. It&#8217;s sent after a purchase, on a subscriber&#8217;s one-year anniversary, or after an event.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>The goal:<\/strong> To make the client feel like part of something, not just a number on your spreadsheet.<\/li>\n\n\n\n<li><strong>The trick:<\/strong> Don&#8217;t try to sell anything here. Just say thank you. Sales will follow thanks to that strengthened trust.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\"><strong>Informative letter (Changes or Updates)<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">The <strong>informative letter template<\/strong> is vital for transparency. It&#8217;s used to announce price changes, new legal regulations, office relocations, or service updates.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>The goal:<\/strong> To avoid misunderstandings and provide reassurance.<\/li>\n\n\n\n<li><strong>The trick:<\/strong> Be crystal clear. If there&#8217;s a change that affects the client&#8217;s wallet or time, mention it right at the beginning.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\"><strong>Prospecting or sales letter<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Here we enter commercial territory. The sales <strong>client letter<\/strong> aims to present a solution to a problem the client has (or doesn&#8217;t know they have).<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>The goal:<\/strong> To get a click, an appointment, or a purchase.<\/li>\n\n\n\n<li><strong>The trick:<\/strong> Focus on the benefits, not the features. Don&#8217;t sell &#8220;a tool&#8221;, sell &#8220;time savings&#8221;.<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"830\" height=\"340\" src=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/03\/sales-grow.jpg\" alt=\"\" class=\"wp-image-88604\" style=\"width:839px;height:auto\" srcset=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/03\/sales-grow.jpg 830w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/03\/sales-grow-300x123.jpg 300w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/03\/sales-grow-768x315.jpg 768w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/03\/sales-grow-110x45.jpg 110w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/03\/sales-grow-60x25.jpg 60w\" sizes=\"auto, (max-width: 830px) 100vw, 830px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\"><strong>How do I start an informative letter to my clients?<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">Writing an <strong>informative letter<\/strong> doesn&#8217;t have to be a headache if you follow a logical structure. Here&#8217;s a step-by-step breakdown on how to build it:<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>The <a href=\"https:\/\/mailrelay.com\/en\/glossary\/email-subject-line\/\" type=\"glossary\" id=\"59855\">subject line<\/a><\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">It&#8217;s 80% of your success. If the subject line fails, your <strong>informative letter for clients<\/strong> will never be opened.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Avoid:<\/strong> &#8220;Newsletter n\u00ba 24&#8221; or &#8220;Information&#8221;.<\/li>\n\n\n\n<li><strong>Use:<\/strong> &#8220;Important account update&#8221; or &#8220;[Name], we have some news for you&#8221;.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\"><strong>The greeting<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">As we always say: personalization is non-negotiable. With Mailrelay, it&#8217;s very easy to use tags to display the client&#8217;s name. A &#8220;Hi, [Name]&#8221; breaks the ice much better than a cold &#8220;Dear Client&#8221;.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>The information<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Apply the inverted pyramid technique: <strong>the most important part goes first<\/strong>. If your <strong>informative letter<\/strong> is to announce an office relocation, don&#8217;t start by telling your company&#8217;s history. Start with the new address and the date of the move. Then, explain the details.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Close by reinforcing the main message and thanking them for their patience or trust. Don&#8217;t leave the ending &#8220;up in the air&#8221;.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>The sign-off + <a href=\"https:\/\/mailrelay.com\/en\/glossary\/call-to-action-cta\/\" type=\"glossary\" id=\"59881\">CTA<\/a><\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Sign off with a tone that fits your brand (Sincerely, Best regards, Cheers). And, most importantly: <strong>add a call to action<\/strong>. Even in an informative letter, there can be an &#8220;If you have questions, reply to this email&#8221;.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>How to write a letter to a client? Key drafting tips<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">If you want your <strong>client letters<\/strong> to rank &#8220;Top 1&#8221; in your users&#8217; inbox, apply these expert tips:<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Personalization<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Don&#8217;t just stick to the name. If you can segment your database by interests or purchase history, do it. A <strong>letter to a client<\/strong> that mentions something they actually bought has a much higher conversion rate.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Clarity<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Cut the &#8220;fluff&#8221;. Use short sentences. If a word doesn&#8217;t add value, delete it. The client should be able to read your <strong>informative letter<\/strong> in under a minute and understand everything.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Call to action<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">What do you want them to do after reading? Go to your website? Make a phone call? Add a large, contrasting button with actionable text (e.g., &#8220;I want my discount&#8221;).<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Formatting<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Use bold text for key ideas. Today&#8217;s reader doesn&#8217;t read, they <strong>scan<\/strong>. If they only read the bold text in your <strong>client letter<\/strong>, they should still get the general idea.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"700\" src=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes-para-informar.webp\" alt=\"client letters to inform\" class=\"wp-image-89182\" srcset=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes-para-informar.webp 1000w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes-para-informar-300x210.webp 300w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes-para-informar-768x538.webp 768w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes-para-informar-110x77.webp 110w, https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes-para-informar-60x42.webp 60w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Other articles that might interest you: <\/p>\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/newsletter\/\">Ecommerce Newsletter: Guide to creating a successful one + examples<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/blog\/2025\/08\/19\/tofu-mofubofu-what-they-mean-and-how-to-use-them-in-your-marketing-strategy\/\">TOFU, MOFU, BOFU: What are they? Examples and implementation strategies<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/abandoned-cart-email\/\">Abandoned Carts: How to recover them?<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/mailrelay.com\/en\/glossary\/email-marketer\/\">Email Marketer: How to be the best at Email Marketing<\/a><\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\"><strong>Examples of the best client letters you can send<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">Here are three <strong>client letter templates<\/strong> for you to copy and adapt today:<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Thank you letter template<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\"><strong>Subject:<\/strong> Thanks for being there, [Name]<\/p>\n\n<p class=\"wp-block-paragraph\"><em>Hi, [Name]:<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>Today we don&#8217;t want to sell you anything. We just wanted to thank you for trusting [Your Company Name] over this past year.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>Clients like you are the ones who motivate us to improve every day.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>As a token of our gratitude, we&#8217;ve added a <strong>surprise gift<\/strong> to your user dashboard.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>[Button: View my gift]<\/em><\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Informative letter template<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\"><strong>Subject:<\/strong> [Important] Change in our terms of service<\/p>\n\n<p class=\"wp-block-paragraph\"><em>Hi, [Name]:<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>We are writing this <strong>informative letter example<\/strong> to let you know that, due to new European regulations, we have updated our privacy policy.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><strong><em>How does this affect you?<\/em><\/strong><\/p>\n\n<ul class=\"wp-block-list\">\n<li><em>Your data is more protected than ever.<\/em><\/li>\n\n\n\n<li><em>You have more control over which messages to receive.<\/em><\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><em>You don&#8217;t have to do anything, but if you want to read the full text, it&#8217;s right here: [Link].<\/em><\/p>\n\n<h3 class=\"wp-block-heading\"><strong>Prospecting or sales letter template<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\"><strong>Subject:<\/strong> [Name], would you like to save 2 hours a day?<\/p>\n\n<p class=\"wp-block-paragraph\"><em>Hi, [Name]:<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>We know that managing [Client&#8217;s problem] is exhausting. That&#8217;s why we&#8217;ve designed a new system that does it for you.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><strong><em>Benefits for you:<\/em><\/strong><\/p>\n\n<ul class=\"wp-block-list\">\n<li><em>More free time for your business.<\/em><\/li>\n\n\n\n<li><em>Fewer manual errors.<\/em><\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><em>We&#8217;ve reserved 5 spots for a free demo this week. Are you in?<\/em><\/p>\n\n<p class=\"wp-block-paragraph\"><em>[Button: Book my free demo]<\/em><\/p>\n\n<h2 class=\"wp-block-heading\"><strong>How to send the informative letter to clients?<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">You don&#8217;t need to be a tech expert to send bulk <strong>client letters<\/strong>. With Mailrelay, the process is this simple:<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>1. Sign up for free<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Create your account in seconds. No credit cards or commitments.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>2. Create your own campaign for your clients<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Use our <strong>Smarteditor<\/strong>. You can drag and drop blocks, add images, and if you get stuck, our <strong>generative AI<\/strong> can write the body of the letter for you.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>3. Manage your mailing list<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Upload your contacts from an Excel or CSV file. Organize them into groups so your <strong>informative letter<\/strong> reaches only those who are interested.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>4. Review your statistics<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">Once the <strong>client letter<\/strong> is sent, don&#8217;t stay in the dark. See who opened it, what link they clicked on, and who bounced. This way, you can improve your next delivery.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>Mailrelay: Up to 80,000 free emails to your clients<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">We know that finding useful information is like searching through a huge, dusty library. That&#8217;s why at Mailrelay, we want to make it easy for you.<\/p>\n\n<p class=\"wp-block-paragraph\">If you&#8217;re looking for the best tool to send your <strong>client letters<\/strong>, you&#8217;re in the right place. We offer the largest free account on the market: <strong>80,000 emails per month<\/strong> to <strong>20,000 contacts<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">With no feature limits, human support in English (in case you get stuck with your first <strong>informative letter<\/strong>), and the best deliverability.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/mailrelay.com\/en\/signup\/\">[Create your free Mailrelay account and start sending letters that convert]<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Writing a letter to a client might seem like something from the last century, but the reality is quite different. In the midst of digital saturation, receiving a well-written, clear, and personalized message is a breath of fresh air that builds trust in your brand. Whether you&#8217;re a large corporation or an SMB, knowing how [&hellip;]<\/p>\n","protected":false},"author":124,"featured_media":89179,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[761,562,581,814],"tags":[],"class_list":["post-90915","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-copywriting-2","category-email-marketing-2","category-marketing-2","category-sales"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u25b6\ufe0e Client Letters: Types and Best Examples 2026<\/title>\n<meta name=\"description\" content=\"\u25b6\ufe0e Discover the best client letter templates you can write and examples to help you draft them with Mailrelay \u2705 Check it out!\" \/>\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\/blog\/2026\/08\/17\/client-letters\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u25b6\ufe0e Client Letters: Types and Best Examples 2026\" \/>\n<meta property=\"og:description\" content=\"\u25b6\ufe0e Discover the best client letter templates you can write and examples to help you draft them with Mailrelay \u2705 Check it out!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mailrelay.com\/en\/blog\/2026\/08\/17\/client-letters\/\" \/>\n<meta property=\"og:site_name\" content=\"Mailrelay\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Mailrelay\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-17T19:19:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-17T19:23:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/04\/cartas-a-clientes.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"700\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Jose Argudo\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mailrelay\" \/>\n<meta name=\"twitter:site\" content=\"@mailrelay\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jose Argudo\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/blog\\\/2026\\\/08\\\/17\\\/client-letters\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/blog\\\/2026\\\/08\\\/17\\\/client-letters\\\/\"},\"author\":{\"name\":\"Jose Argudo\",\"@id\":\"https:\\\/\\\/mailrelay.com\\\/en\\\/#\\\/schema\\\/person\\\/d8e868b5b67c658bb687818bc5ee08ae\"},\"headline\":\"Client Letters: How to Write Them Successfully? 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