Compare MailerSend vs. Postmark

Partner with the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. The Twilio SendGrid 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. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale, while maximizing inbox placement and protecting your reputation as a trusted sender. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.

Reliable SMTP relay services and email delivery services. You can send and track large volumes of emails with ease using powerful email delivery services. In minutes, integrate and you can start sending. All your email delivery, transactional and email relay needs are covered under one roof. SMTP can deliver whether you need a reliable backend solution or scalable infrastructure to handle large volumes of emails. Reputation Defender, SMTP's proprietary technology, uses big data to proactively monitor and protect your email list health. It also suppresses bad emails from soft and hard bounces in order to protect your IP reputation and domain. This will ensure that your delivery rates and inbox placement gradually improve over time.

Critical Impact allows you to amplify and facilitate your email marketing strategies. Our platform allows you to efficiently monitor your email and messaging portfolio, send edited and scheduled emails and text messages (SMS) for your advertising efforts with an affordable pricing structure. Our subscriber assessment technique digs deep into your data to quickly find the subscribers who are most likely to read your next email, receive more emails, or make an additional purchase. With our user-friendly interface, you can schedule the forwarding of your communications in seconds. Choose your sending options on a single page, then avoid errors by viewing the configuration of all your submission details. Even rate your email on display, from phone, tablet to monitor.

Selzy is a simple email marketing tool for startups. Lightning-fast 24/7 expert support, even on the Free plan. From list growth to segmentation, automation, A/B testing, and analytics, Selzy covers it all. - Launch email campaigns in less than 15 minutes with Selzy’s intuitive drag-and-drop editor. - Grow your audience with ease with embedded sign-up forms or pop-ups. - Automate your campaigns in a few clicks. - Make use of direct integrations with WooCommerce, Shopify, Salesforce, Hubspot, Wordpress, Facebook Lead Ads, and so much more. - Get access to the knowledge base 150+ tutorials.

ZeroBounce is an email verification platform that scores and delivers emails. It helps businesses improve their inbox placement. The service can detect email typos, abusive and nonexistent email accounts, spam traps, and other potentially dangerous email addresses. ZeroBounce also offers an email scoring service and a suite delivery tools to enhance email inbox placement. ZeroBounce has a military-grade security infrastructure that ensures customer data is kept safe. ZeroBounce has validated over 23 billion emails to date and serves more than 325,000 businesses in 190+ nations. It also adds 200 new clients each day. ZeroBounce validates email lists and reports that they have a 99%+ accuracy rate. They also maintain a good reputation for sending quality. ZeroBounce was ranked no. 851 on Inc. 5000, the list of fastest-growing private businesses in the United States. ZeroBounce rose to number. 40 on the list.

Send messages that your customers will read (and take action on). Attentive's AI powered SMS & Email platform helps retailers to ecommerce entrepreneurs engage with customers and drive billions of dollars in revenue. We'll help optimize your marketing program by helping you to target the right audience, measure your most important metrics and optimize your marketing program. With over 100 flexible integrations you can connect seamlessly to the rest your marketing stack. We partner with industry leaders in retail and e-commerce, food & beverages, and media & entertainment. Attentive's AI powered SMS & Email platform will double ROI in just a couple of months. Learn more about the 30-day free trial.

Bouncer - The easiest to use yet the most powerful E-mail Validation and deliverability Service. Bouncer is a fortress-like secure - SOC 2 and GDPR-compliant SaaS e-mail verifier, and deliverability platform trusted by thousands of companies from 6 continents. The platform was founded in 2017 with a simple mission to improve H2H e-mail communication.

One of the most reliable email validation services. It cleans invalid, temporary and unsafe email addresses. Reoon can verify even the most complex email domains, such as Gmail, Yahoo!, Microsoft, AOL, and Custom Domains, with a 99 percent accuracy. Reoon Email Verifier allows you to: 1. Verify emails from Gmail and Yahoo, Microsoft, AOL, and other domains. 2. You can validate email addresses in bulk, without having to send any emails. 3. Email lists can be cleaned up with great accuracy (99%). 4. Detect dynamically changing temporary/disposable address. 5. Email campaigns will see a significant drop in bounce rates Reoon Email Verifier has some unique features: 1. Soft bounces can be detected such as storage full or account disabled via Gmail, etc. 2. Temporary emails can be detected dynamically to catch the most recent domains. 3. Quick API Validation allows you to verify emails live in 0.5 seconds. It is a web-based application that runs on Reoon's servers. This can be accessed and used from any web browser.

GetResponse is a comprehensive email marketing platform that provides small businesses, solopreneurs, coaches, and marketers with powerful and affordable tools to grow their audience, engage with their subscribers, and turn subscribers into paying customers. With over 25 years of expertise, our customers choose GetResponse for our user-friendly solution, award-winning 24/7 customer support, and powerful tools that go beyond email marketing – with automation, list growth, and additional communication tools like webinars and live chats to help businesses build their personal brand, sell their products and services, and build a community. GetResponse's powerful email marketing software includes AI-enhanced content creation tools, professional templates, easy-to-use design tools, and proven deliverability. Our customers are empowered with tools to build a website and unlimited landing pages, and create engaging pop-ups and signup forms. The marketing automation builder brings your ideal automated communication scenario to life with a visual builder that can grow with your needs.

Looking for fast, easy solutions to protect your entire data lifecycle? Look no further. Melissa’s Web APIs offer a range of capabilities to keep your customer data clean, verified, and enriched. Our solutions work throughout the entire data lifecycle – whether in real time, at point of entry or for a batch cleanup. • Global Address: Verify & standardize addresses in 240+ countries & territories with postal authority certified coding & premise-level geocoding • Global Email: Verify email mailboxes, syntax, spelling & domains in real time to ensure they are deliverable • Global Name: Verify, standardize & parse person & business names with intelligent recognition of millions of first & last names • Global Phone: Verify phone as active, identify line type, & return geographic details, dominant language & carrier for 200+ countries • Global IP Locator: Gain a geolocation of an input IP address with lat & long, proxy info, city, region & country • Property (U.S. & Canada): Return comprehensive property & mortgage info for 140+ million U.S. properties • Personator (U.S. & Canada): USPS® CASS/DPV certified address checking, name parsing & genderizing, phone & email verification are all easily performed with this API