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Pepipost.com — 30k emails free for first month, then first 100 emails/day free. - Source: dev.to / about 3 hours ago
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GetResponse - Email marketing from GetResponse. Send email newsletters, campaigns, online surveys and follow-up autoresponders. Simple, easy interface. FREE sign up.
SendGrid - Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free
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