Closum is described as 'Email and SMS Platform built for Marketers and Developers' and is a Email Marketing service in the business & commerce category. There are more than 100 alternatives to Closum for a variety of platforms, including Web-based, SaaS, iPhone, Android and Windows apps. The best Closum alternative is Odoo, which is both free and Open Source. Other great apps like Closum are Mailchimp, Listmonk, HubSpot and UniStack.
Keila is an Open Source alternative to newsletter tools like Mailchimp or Brevo. With Keila you can easily send out newsletter campaigns and create sign-up forms. Grow your contact lists, use custom data, and send your campaigns with Keila.
GemCRM is a WordPress-based CRM and marketing automation plugin designed to help businesses manage contacts, nurture leads, and automate customer communication directly from their own website.
Easy-to-use, email marketing and automation for fast growing businesses. Send group email campaigns, automated messages and targeted newsletters with ease.
EmailBuilder.js is a free and open-source email template builder for developers. Build emails faster than ever with clean JSON or HTML output that render well across clients and devices.
Unspam.email is an online spam tester tool for emails. It helps to improve the deliverability and reputation of your email campaigns.
Yournotify is an email and sms marketing platform for customer engagement. We help brands build better customer communication and engagement with our easy to use marketing platform to grow their business.
This RESTful API is a modern API that lets you use the message services provided by iP.1 Networks AB via your own applications. Do everything from just sending SMS messages to managing contacts and sending surveys.
Growing small businesses use Keap Ultimate for a robust CRM solution with advanced marketing and sales automation, fully customizable campaigns, advanced ecommerce, text marketing, and so much more.
You can use ShoutOut to announce a sale, or promote a new item in stock, or even share the news of your engagement.
KingSMTP is a transactional SMTP relay for SaaS, forums, and e-commerce. Send email notifications reliably with a clean IP, no KYC, and crypto payments accepted — including Bitcoin and Monero.
Email marketing and automation software used by over 100,000 small businesses, entrepreneurs and bloggers around the world.
Plivo offers a simple, quick, and scalable way to modernize customer communications. Businesses of all sizes — from growing startups to public companies — rely on Plivo to deliver better customer experiences.
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