How I review: I don't pretend to have used every single tool on this list (no one has). But I have used a lot of them on client projects and my own projects, and I'm still learning. If I haven't used a tool, I sign up for a test account to explore the interface, check pricing directly, and research reviews from real users.
Ratings methodology: Ratings are weighted across ease of use, automation depth, deliverability track record, integrations, pricing fairness, and support quality. No vendor can pay to improve their rating.
Affiliate links: Some links earn me a commission if you sign up. This never influences my scores or rankings. Tools are always ranked on merit first.
MailerCloud is a budget bulk email marketing platform built for agencies and high-volume senders. It supports SMTP relay email campaigns and transactional email with competitive per-email pricing and white-label options.
All-in-one platform with unlimited contacts and SMS marketing.
Affordable bulk email API and marketing

Email API and SMTP relay for developers
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