SendGrid vs. SubjectLine Comparison


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		Related Products Klaviyo Klaviyo is an all-in-one platform that makes it easy for B2C businesses grow by integrating marketing, analytics, and customer service in one solution. Powered by unified data and built-in AI, it's faster and easier than ever to create personalized, lasting customer relationships. Klaviyo unifies your customer profiles by capturing every event, and then lets you orchestrate your email marketing, SMS marketing, push notifications, WhatsApp, and RCS campaigns in one place. Klaviyo AI helps you build audiences, write copy, and optimize — so you can always send the right message at the right time, automatically. With real-time attribution and insights, you'll be able to make smarter, faster decisions that drive ROI. Trusted by more than 170,000 businesses, Klaviyo can grow your business while keeping operations simple and customer relationships strong. 4,859 Ratings Visit Website GetResponse GetResponse provides all-in-one marketing software that empowers marketers, solopreneurs, coaches, creators, and small business owners with affordable, easy-to-use tools for email marketing, marketing automation, and content monetization. With over 25 years of expertise, GetResponse goes beyond email with tools to help grow and engage audiences, create and sell courses, and turn ideas into income. It’s the go-to solution for building a personal brand, selling products and services, and fostering a loyal community. 1,428 Ratings Visit Website InboxAlly We engage with your emails to teach inbox providers not to send your emails to spam. Our clients have seen their open rates more than DOUBLE within 1-2 weeks! Highly engaged recipients not only open emails, but scroll down as they read. So long as the content is longer than the page, this should be done for nearly all opened emails. When a recipient goes out of their way to take an email out of spam, they are telling the inbox provider, hey, you made a mistake. Moving an email from the promotions folder to the primary inbox tells inbox providers that you disagree with their sorting criteria and it and similar emails should go to the primary inbox. Demonstrates that recipient is interested in the content of your email. We have a set of random generic replies we use for this. Marking an email as important can essentially be interpreted by the inbox provider as "This email is extremely valuable, never send it to spam." 80 Ratings Visit Website HubSpot CRM HubSpot brings your marketing, sales, and service teams together on the same AI-powered customer platform. HubSpot's Customer Platform is not just a tool; it's the heartbeat of your business. Designed with passion and precision, our CRM stands out as the ultimate solution for empowering your team to build deeper customer relationships. It transforms the way you engage with your clients by offering a seamlessly integrated, all-in-one platform for sales, marketing, and customer service. With HubSpot's CRM, you gain unparalleled insights into your customer interactions, all organized in an intuitive, easy-to-navigate dashboard that promises to skyrocket your team's efficiency. Our platform is engineered to grow with you, offering scalable solutions that adapt to your evolving business needs. What's more, HubSpot's Customer Platform includes a robust free version, packed with essential features, making it the perfect choice for ambitious businesses of all sizes. 24,151 Ratings Visit Website Attentive Send messages your customers want to read (and act on). 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Greatmail is an email service provider (ESP) specializing in business class email hosting, SMTP hosting and email servers. For ISPs, application programmers and cloud developers, we also provide custom solutions including dedicated IP servers and process specific, load balanced configurations with multiple servers. 4 Ratings Visit Website Visual Visitor AI Sales Rep with Person-Level Website Identification Identify and Influence Your Engaged Website Visitors into Sales-Ready Leads – Before You Commit a Single Working Hour. 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Verify, standardize and cleanse global identities, addresses, phones & emails, powered by AI-driven reference data. Our flexible APIs are designed for modern interfaces, including REST, JSON, and XML are easily accessible through our Developer Portal, where you can build, test, and explore integrations. Enhance your data with geographic, demographic, and firmographic insights, along with U.S. property data for advanced enrichment. Melissa supports seamless integration with popular platforms such as Salesforce, Shopify, and more, making data management and governance simple and efficient. Whether you’re focused on data management, data validation, or leveraging our APIs into your website or mobile applications, Melissa helps you unlock the full potential of your data. Get started with 1,000 complimentary credits! All you need is a Melissa account 74 Ratings Visit Website iPaper iPaper is a digital catalog platform that lets you convert your printed leaflets and catalogs into fully interactive digital shopping experiences. Capture shoppers' attention with product images and videos. Drive traffic and sales with in-catalog shopping over email, WhatsApp or directly integrated with your ecommerce webshop. The iPaper platform is built to fit your business and we offer advanced features to fully automate your setup. Getting started with iPaper is much more than just creating a catalog that looks good. It is built to help retailers create an automated interactive marketing channel that will drive traffic and inspire shoppers to buy. 40 Ratings Visit Website
About Email is the backbone of your customer engagement. The Twilio SendGrid Email API is the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. Our flexible Email API and proprietary Mail Transfer Agent (MTA), intuitive console, powerful features, and email experts make it easy to ensure all your email gets delivered in seconds and without interruption. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.	About SubjectLine.com is a division of Worldata. Contact us today to receive more information about how we can help you and your company with your marketing strategies! SubjectLine.com has become the industry’s leading email marketing resource. The site includes major marketing related news items, best practices and a free subject line rating tool that allows marketers to test any subject line for possible deliverability and marketability issues. The tool scans for over 800 unique rules that could impact a marketer’s email open rates and deliverability. Results provide marketing-related suggestions that are based on 6 billion+ email messages checked, improving marketers overall campaigns. These results enable marketers to acquire new customers utilizing the best permission email data available, improve email customer data hygiene and depth and provide strategic consulting services for both retention and acquisition email efforts.
Platforms Supported Windows Mac Linux Cloud On-Premises iPhone iPad Android Chromebook	Platforms Supported Windows Mac Linux Cloud On-Premises iPhone iPad Android Chromebook
Audience Companies of all sizes searching for an email API to deliver an exceptional email experience	Audience Anyone needing an email marketing platform
Support Phone Support 24/7 Live Support Online	Support Phone Support 24/7 Live Support Online
API Offers API	API Offers API
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $19.95 per month Free Version Free Trial	Pricing No information available. Free Version Free Trial
Reviews/Ratings Overall 3.9 / 5 ease 4.0 / 5 features 3.9 / 5 design 4.1 / 5 support 3.9 / 5 Read all reviews	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Training Documentation Webinars Live Online In Person	Training Documentation Webinars Live Online In Person
Company Information Twilio SendGrid Founded: 2009 United States sendgrid.com/en-us	Company Information SubjectLine www.subjectline.com
Alternatives Sendbird	Alternatives Mizy
Selzy	Send Check It
SMTP.com Ziff Davis	Maileroo
turboSMTP	MailGenius
Maileroo View All	MailMonitor View All
Categories Drag and Drop Email Builders eCommerce Marketing Email APIs Email Deliverability Email Management Email Marketing Email Template Design Email Testing Email Tracking Email Verification Marketing Automation SMTP Transactional Email	Categories Email Testing
Email Testing Features A/B Testing Accessibility Testing Deliverability Rates DMARC Analytics HTML Validation Improvement Recommendations IP Blacklist Checking Pre-Send Email Testing Preview Across Browsers & Devices Reporting / Analytics Sender Reputation Scoring Spam Testing Show More Features Email Management Features Data Recovery Email Archiving Email Monitoring Queue Manager Response Management Routing Shared Inboxes Signature Management Spam Blocker Whitelisting / Blacklisting Email Marketing Features A/B Testing Artificial Intelligence Auto-Responders CAN SPAM Compliance Customer Surveys Drip Campaigns Dynamic Content Event Triggered Email Image Library Landing Pages/Web Forms Mailing List Management Mobile Optimized Emails Reporting/Analytics Subscriber Management Template Management WYSIWYG Email Editor Email Template Design Features A/B Testing Code From Scratch Drag & Drop Editing Image Library Import HTML Code Mobile-Friendly / Responsive Potential Issue Identification Premade Templates Proofing Reporting / Analytics Text Editor Theme Editor Email Tracking Features A/B Testing Audience Segmentation Campaign Management Event-Based Notifications Location Tracking Team Management Email Verification Features Bulk Email Verification Catch-all Server Detection Disposable Email Detection Domain Check Mail Server Validation Single Email Verification Spam Trap Detection Syntax Check Marketing Automation Features A/B Testing Analytics / ROI Tracking Artificial Intelligence Content / Blogging Platform Customizable CTAs Drip Campaigns Dynamic Content Landing Pages / Web Forms Lead Scoring Sales Intelligence Search Marketing Segmentation Social Marketing Website Visitor Tracking Transactional Email Features A/B Testing Contact Database Dynamic Content Email Monitoring Mailing List Management Reporting/Analytics Spam Check Template Management eCommerce Marketing Features AB Testing Abandoned Cart Email Analytics / ROI Tracking Customer Data Profiles Dynamic Content Email Marketing Email Personalization Facebook Ads Google Ads Product Recommendations Push Notifications Retargeting Search Marketing Segmentation Signup Forms & Popups SMS Marketing Social Marketing Triggered Emails Website Visitor Tracking
Integrations Abstra Beetsol Clixlo Ethyca GrowSurf GrowthLoop HubSpot Marketing Hub Jumbula KudosHub Email Validation Leadoo MagicBell Ninja Popups SMS Ninja SafeToSend Shift StatusTicker SuperSaaS SutiAP Workever Xano Show More Integrations View All 557 Integrations	Integrations Abstra Beetsol Clixlo Ethyca GrowSurf GrowthLoop HubSpot Marketing Hub Jumbula KudosHub Email Validation Leadoo MagicBell Ninja Popups SMS Ninja SafeToSend Shift StatusTicker SuperSaaS SutiAP Workever Xano Show More Integrations
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