Drip Drop
Drip Drop is an email and SMS marketing automation tool that runs on your own provider accounts. Connect SendGrid, Mailgun, Gmail, Outlook, SMTP, Twilio, or Telnyx and you send at provider cost, no per-contact markup on top of what you already pay to send.
You build campaigns in a drag-and-drop flow builder: triggers, delays, branching, and timezone-aware scheduling, with email or SMS at each step. Import and manage contacts, segment and organize with tags and custom fields, start from a template or have AI draft the copy, then track opens, clicks, and delivery per flow. Webhooks and a public API connect it to what you already run, and unsubscribes, STOP/HELP, and consent handling are built in.
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Coldletter
Coldletter is an email templating and automation platform built for product and engineering teams that need better control over the emails their applications send. The platform works on top of providers such as SendGrid, Postmark, Amazon SES, Mailgun, Resend, and SparkPost, allowing teams to keep their existing delivery stack. Users can design responsive, accessible, and dark-mode-safe email templates with a visual editor instead of hand-coding complex HTML or MJML. Coldletter also supports reusable blocks, typed variables, live previews, test sends, localization, version control, and approval workflows. Its automation tools let teams build email journeys with triggers, waits, branches, A/B testing, and delivery analytics. Coldletter helps teams design, automate, manage, and deliver product emails more reliably from one centralized workspace.
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EmailOctopus
EmailOctopus is the low-cost email marketing solution that provides you with the essential features you need to grow and engage your audience.
Create beautiful email campaigns with the drag and drop editor, or choose from a library of ready-made templates. You can also build landing pages and pop-up forms for collecting new subscribers.
With time-based automation, you can set up welcome emails, as well as entire onboarding and lead nurturing email sequences. With segmentation you can send targeted emails to groups of subscribers using custom fields to import and collect the data that matters most to understanding your audience. You can also segment lists based on campaign activity.
EmailOctopus integrates with over 2,000 apps via Zapier and Integromat, and offers a WordPress plugin, as well as direct integrations with Carrd, OptinMonster and BookFunnel.
For Amazon SES users, EmailOctopus offers a Connect product with unlimited emails per month.
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AcelleMail
AcelleMail is self-hosted email-marketing and marketing-automation software sold under a one-time license, with full PHP/Laravel source code included. You bring your own sending provider — Amazon SES, SendGrid, or any SMTP — so there are no per-contact or per-email fees. It supports unlimited lists and subscribers, campaign automation, autoresponders, segmentation, bounce and feedback-loop handling, detailed analytics, and multi-user/multi-account management. Ideal for agencies, developers, and businesses that want to run their own email infrastructure at a predictable cost.
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