Growth · alternatives · 2026

24 alternatives to Mailmodo Email API

APIs to send automated interactive emails with forms

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mailmodo Email API launched in 2021; newer entries below may have overtaken it.

1
Mailmodo AI▲471
Try this AI email marketing tool to create emails, automate journeys, and add interactivity to drive better conversions.
2025 · mailmodo.com · its alternatives →
2
MailMoo▲292
AI personalized video for cold outreach that works
2025 · mailmoo.io · its alternatives →
3
Unosend▲205
Send transactional + marketing email w/ 99.9% deliverability
Dec 2025 · unosend.co · its alternatives →
4
Resend▲1,325
An entire collection of pre-built components with a much faster development experience.
2023 · resend.com · its alternatives →
5
MailerSend▲305
Better transactional emails for teams.
2020 · its alternatives →
6
MailMood▲282
From casual email to corporate speak — in one click
2025 · chromewebstore.google.com · its alternatives →
7
MailerSend - Transactional SMS API▲126
Build strong customer connections with transactional SMS
2022 · mailersend.com · its alternatives →
8
Blocks▲715
AI-powered builder to create your emails
2023 · useblocks.io · its alternatives →
9
Mailercloud Email API Platform▲165
1,000+ Emails per Second with 99%+ Deliverability
Mar 2026 · mailercloud.com · its alternatives →
10
AI Email Signature Generator▲303
Create stunning, professional email signatures instantly
2025 · mailmodo.com · its alternatives →
11
Context.IO▲226
API for email inboxes
2015 · its alternatives →
12
InboxSDK▲508
First usable API to write Gmail Apps for 1B active users
2015 · inboxsdk.com · its alternatives →
13
Maileroo▲118
Transactional email delivery
2023 · maileroo.com · its alternatives →
14
Designmodo▲419
Timesaving tools for designers, developers and marketers.
2020 · designmodo.com · its alternatives →
15
inbound ▲227
Hey HN! I've been working on Inbound (inbound.new) - an email system that lets you programmatically manage email addresses and route them to AI agents, webhooks, or forward them anywhere. The core idea: instead of manually managing email addresses, you create them on-demand via API and route incoming emails to your AI agents or other automated systems. For AI Agents: Create [email protected] and emails get sent to your AI agent as webhooks. Your agent can reply using our SDK. Perfect for AI customer support or automated responses. For Email Forwarding: Set up [email protected] to…
2025 · inbound.new · its alternatives →
16
Atomic Mail Agentic▲268
Let your agents read, send, and react to email autonomously
Jun 2026 · atomicmail.ai · its alternatives →
17
Quartz▲270
AI email client built for focus. Runs locally on your Mac
Jun 2026 · quartzmail.ai · its alternatives →
18
AgentMail▲275
Email Inboxes for AI Agents
Apr 2026 · agentmail.to · its alternatives →
19
HubSpot Meeting Scheduler in Email▲150
More meetings. Less drop-offs.
2025 · mailmodo.com · its alternatives →
20
Threads.io▲257
Trigger automated behavior-driven emails (by SendGrid).
2015 · its alternatives →
21
MailerLogic▲96
Email API with built-in deliverability intelligence
Apr 2026 · mailerlogic.com · its alternatives →
22
MailMaestro▲152
Write AI-powered emails, summarize threads and attachments
2023 · maestrolabs.com · its alternatives →
23
Mailgun▲7
Transactional email API service for developers
2022 · mailgun.com · its alternatives →
24
Emailkick▲182
Simple email designer and API for AWS SES users
2022 · emailkick.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →