Mailbuttons alternatives

Tools that do what Mailbuttons does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from Mailbuttons.

Read 2026-10-26 · Mailbuttons itself: From ≈ $199/mo

With a free plan or free to use: OpenClaw, MyClawn, Vellum, Littlebird.

10 alternativesUnlike Mailbuttons

#1
Gumloop Agents
Builds and deploys autonomous agents that automate business tasks like sales pipeline management, prospect research, and CRM updates.
More widely used
372k
Active
From $37/mo
#2
PolyAI Agents
Builds and runs voice AI agents that handle customer conversations across phone, chat, and other channels.
Also: VoiceMore widely used
392k
Active
Pay per use
2017
#3
Relevance AI Agents
Builds and deploys specialized AI agents for enterprise tasks like CRM enrichment, meeting prep, call logging, and sales forecasting.
More widely used
28.9k
Active
Contact sales
#4
OpenClaw Agents
Open source AI assistant that manages email, calendar, and tasks from chat apps without subscriptions.
Free planOpen source
182k
Active
Open source
#5
MyClawn Agents MCP · sign-in
Runs an AI agent on its own cloud desktop that browses, writes and sends email while you watch.
Free planAlso: Chat assistant
3
Active
From $19/mo
#6
Vellum Agents
Runs an autonomous AI assistant on your computer that manages tasks, remembers preferences, and takes actions across your tools and files.
Free planOpen source
30.8k
Active
Open source
2024
#7
Lindy Agents
Executes tasks across connected tools like email, Slack, and CRM by learning your workflows and operating on a schedule.
More widely used
153k
Active
From $49.99/user/mo
#8
Twin Agents
Builds autonomous agents that run business processes like lead generation, content creation, and outreach in Slack and email.
More widely used
2.5k
Active
From $29/mo
2024
#9
Sierra Support
Runs customer service agents for brands that answer and resolve customer conversations across chat, SMS, email and phone.
Also: Chat assistantMore widely used
11.9k
Active
2023
#10
Littlebird Meetings
AI assistant that attends meetings, takes notes, and automates tasks while maintaining a memory of your work across apps.
Free planAlso: Chat assistant
16.5k
Active
From $17/user/mo

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How this list is made: the words Mailbuttons is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.