Alternatives

Products that do what inboxes.net does

Open-source, multi-domain inbox and agent MCP for Resend

1
Sidemail MCP▲150
Let AI agents write & manage your SaaS emails
Dec 2025
2
ImprovMX▲292
Free email forwarding
2019
3
Inboxer▲212
A clean, open-source desktop client for Google Inbox 💌
2018
4
Warmup Your Email▲153
Always land in Inbox by establishing sender reputation
2021
5
AutoSend MCP▲171
The email platform your AI agent can operate.
Mar 2026
6
Darwin Mail▲259
Enhance Gmail to get your Google Inbox features back.
2019
7
React Email 6.0 by Resend▲135
Build, customize, and ship emails — all from your own app
Apr 2026
8
In Parallel MCP▲127
Your context, available to every agent.
Jul 2026
9
Read AI for Gmail▲172
Inbox AI
2024
10
Cloudflare Email Service▲168
Turn any email inbox into a native interface for AI agents
Apr 2026
11
Boxy 2▲301
The best Mac client for Inbox by Gmail
2017
12
Lightfern for Email▲160
The telepathic AI writing tool
Feb 2026
13
MailerLite email marketing MCP server▲144
Turn your AI tool into a personal email marketing assistant
Oct 2025
14
Inbox by Vanilla▲159
Free customer support software
2024
15
InboxAgents▲110
Smart, unified inbox for Linkedin, email & social media.
Feb 2026
16SE
Signal – Edit emails in your Gmail inbox▲151
2013 · trysignal.com
17
PieterPost MCP▲132
Connect your AI agent to postal mail
Jul 2026
18
InboxCRM▲127
Track your sales pipeline without leaving your inbox, free
2023
19
Interseller▲174
Find an email, send a message, and sync your CRM in a click
2017
20
QuiteInbox▲121
Take back control of your inbox
Nov 2025
21
PureBox.ai▲139
Review-first AI cleanup for your real Gmail inbox.
Jul 2026
22
AI Emaily▲165
Your AI inbox that writes like you + replies on autopilot
Jul 2026
23
InboxPurge▲100
The fastest way to a cleaner Gmail inbox
2023
24
Inbox Grader by Freshworks▲143
Free metrics 📈 for your business and team email ✉️
2018

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