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zaSend — Transactional Email API & SMTP for Developers
zaSend is a transactional email API and SMTP service for developers. Send email from your own domain with SPF, DKIM, DMARC, webhooks, logs, and free starter...
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89 % |
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MailTestAPI
Capture, inspect, and automate email testing with a clean REST API. Built for developer workflows and shipped on Cloudflare.
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88 % |
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stmp — Email Testing for Developers
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88 % |
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Simply Send | Email Infrastructure for Builders
Send transactional and marketing email through one platform with a REST API, SMTP relay, domain verification, and delivery insights.
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87 % |
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DenSend | Email infrastructure for developers
Send, receive, and analyze transactional email at scale. Built for developers, loved by teams. Ship deliverability, not tickets.
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87 % |
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Email API for Resets, Verification and Receipts | NoticeAPI
Add password resets, verification emails, and receipts to your app. Connect your coding agent and run a free simulator test before production sending.
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87 % |
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Wau — Catch dev emails. Inspect everything. Never deliver.
Wau is an SMTP server that captures every email your app sends during development. Inspect HTML, text, raw source, headers and attachments — nothing ever lea...
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87 % |
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Send emails at scale — SendorX
SendorX — reliable transactional and marketing email at scale via SMTP & API.
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87 % |
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Simply Send | Email Infrastructure for Builders
Send transactional and marketing email through one platform with a REST API, SMTP relay, domain verification, and delivery insights.
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87 % |
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MailVerifio — Self-hosted email verification
Verify addresses, clean CSV lists, and find professional emails through a self-hosted SMTP verification stack and documented REST API.
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87 % |
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Velocity Mail - Email Testing and Deliverability Tools
Test email delivery safely with disposable and persistent inboxes, SMTP and API capture, and detailed SPF, DKIM, DMARC, TLS, and email DNS analysis.
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87 % |
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Sendtrap — email sandbox for developers
Catch every email your app sends before it ships. Sendtrap is an email sandbox for developers — point your mailer at it via plain SMTP, inspect HTML/text/hea...
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87 % |
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Postbound — Managed Email Delivery
A purpose built SMTP relay built for support teams. Send tickets, invoices, and transactional email with DKIM signing, real-time logs, and full deliverabilit...
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87 % |
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Sleeng Mail — Email infrastructure for developers
The relay, inbound routing, and analytics engine your app plugs into. Build MailChimp-style or Gmail-style products on Sleeng Mail.
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87 % |
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Posthaste — Every email, accounted for.
A transactional email API that runs its own mail servers. We sign your email, deliver it straight to the recipient, and hand you every response it gave back.
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87 % |
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Simply Send | Email Infrastructure for Builders
Send transactional and marketing email through one platform with a REST API, SMTP relay, domain verification, and delivery insights.
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87 % |
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Free SMTP Sandbox & Email Testing for Developers | SMTPBox
Test application emails safely with a free SMTP sandbox, REST API and shared inboxes. Includes 2,500 emails per month and five team members.
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87 % |
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Avelto · The email API for developers who want it to just work
Send transactional email with one request. Verified domains, test mode and a sandbox, signed webhooks and a full event log. Free for 5,000 emails a month.
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87 % |
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MailTidal — API-first email hosting for developers
MailTidal is developer-focused email hosting with a REST API, SMTP relay, JMAP, unlimited aliases and wildcard catch-all. Programmatic control over multi-dom...
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86 % |
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QuickMailTo - Email Infrastructure for Developers
QuickMailTo provides reliable, fast email sending API with REST API and SMTP support, real-time Webhook tracking, helping businesses reach users efficiently.
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86 % |
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