AgentMail alternatives
6 agents tools in the same lane as AgentMail, ranked by editorial score.
CA
Caspian AI
Agents
One integration to give any AI agent a phone number, inbox, and presence across every major messaging channel.
Freemium· Pricing tiers referenced on the site but specific dollar amounts are not published; contact sales for production usage.Cross-channel customer support agentOutbound sales SDR across email and WhatsApp
CO
Composio
Agents · Model-agnostic (works with Claude, GPT-4o, Gemini, Llama, and other frontier and open-weights models via SDK integrations)
Auth, tools, and sandboxed execution for AI agents across 1,000+ apps
Freemium· Totally Free: $0 · Ridiculously Cheap: $29 · Serious Business: $229Customer support agent triaging Gmail and filing Linear ticketsSales agent updating HubSpot and posting to Slack
HA
Hermes Agent
Agents · Multi-model (300+ via Nous Portal)
8.2
Open-source multi-channel AI agent with persistent memory, scheduling, and subagent delegation from Nous Research.
Freemium· MIT-licensed self-host free; managed Portal tiers Free/Plus/Super/Ultra with creditspersonal-assistanttask-automation
RA
Relevance AI
Agents · Multi-model: Claude (Opus/Sonnet/Haiku), OpenAI GPT, Google Gemini, plus open-weight options (Kimi K2, GLM)
Build and deploy an AI workforce of specialized agents across your business tools
Enterprise· Free trial available via the app. Paid tiers are quote-based (Enterprise): custom actions, unlimited agents/tools/users, dedicated account manager. Reported customer benchmarks cite an average cost of ~$0.09 per task at scale; no fixed public tier pricing.Outbound prospect research and personalisationMeeting prep and CRM hygiene
MA
Marblism
Agents
6.9
Roster of pre-built AI 'employees' that handle email, social, sales, SEO and reception tasks on a flat monthly fee.
Paid· From $24/mo (annual) to $44/mo (monthly); 7-day money-backemail-triagesocial-media-posting
LI
Lindy
Agents · Frontier LLMs (Anthropic Claude and OpenAI GPT families) selected per task; not user-configurable
No-code AI agents for email, meetings, and the rest of your admin work
Paid· Plus: $29.99 /mo per user · Pro: $99.99 /mo per user · Max: $199.99 /mo per user · Enterprise: Contact salesAI executive assistantInbox triage and email drafting