# email integrations for AI agents

> 35 email apps the Definable agent workforce can read from, write to, and act on inside a multi-agent workflow.

## Count

**35** email integrations on Definable. Every one is callable from any workflow on every plan — no per-app limits.

## How the agent team uses email integrations

When the Builder agent reads a prompt that involves email work, it assembles specialists from the team — Researcher, Writer, Designer, Engineer, Distributor — and routes email tool calls through the **Distributor specialist**. The Researcher pulls context, the Writer or Designer produces the output, the Distributor pushes the result into the user's email tool of choice. The Verifier checks every call and self-heals on rate limits, schema drift, or auth refresh.

The Builder picks the right email integration per workflow based on what the user has connected — no manual mapping required.

## Apps in this category

- **Agent Mail** — AgentMail provides AI agents with their own email inboxes, enabling them to send, receive, and act upon emails for communication with services, people, and other agents. — https://definable.ai/apps/agent_mail/
- **Bouncer** — Bouncer is an email verification and validation service that helps ensure email deliverability by verifying email addresses through real-time and batch processing APIs. — https://definable.ai/apps/bouncer/
- **Campaign Cleaner** — Campaign Cleaner is a tool designed to optimize email campaigns by ensuring compatibility across email clients, improving deliverability, and enhancing overall performance. — https://definable.ai/apps/campaign_cleaner/
- **Clearout** — Clearout offers AI-powered email validation, email finder, and prospecting services to enhance email deliverability and lead generation. — https://definable.ai/apps/clearout/
- **ClickSend** — ClickSend is a cloud-based SMS and email marketing platform that enables businesses to send and receive SMS messages, manage contacts, and track campaign performance. — https://definable.ai/apps/clicksend/
- **Emailable** — Emailable provides an email verification API that allows developers to integrate real-time email validation into their applications, ensuring the accuracy and deliverability of email addresses. — https://definable.ai/apps/emailable/
- **Emaillistverify** — EmailListVerify is a service that provides email verification and validation to ensure email lists are clean and deliverable. — https://definable.ai/apps/emaillistverify/
- **Engage** — Engage turns your customers into fans with personalised messaging; using emails, push and in-app notifications, and SMS. — https://definable.ai/apps/engage/
- **Findymail** — Findymail is a B2B email and phone data provider offering verified contact information, email verification, automated exports, and CRM enrichment to enhance sales prospecting and outreach efforts. — https://definable.ai/apps/findymail/
- **Gmail** — Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with other G Suite apps for productivity — https://definable.ai/apps/gmail/
- **Hunter** — Hunter is an email marketing company specializing in lead generation and data enrichment. — https://definable.ai/apps/hunter/
- **Icypeas** — Icypeas is an email discovery and verification tool that allows users to find and verify professional email addresses using first name, last name, and company domain. — https://definable.ai/apps/icypeas/
- **Kickbox** — Kickbox provides an API for real-time email verification, list cleaning, and quality scoring to ensure email deliverability. — https://definable.ai/apps/kickbox/
- **Listclean** — Listclean is an email verification service that helps users validate and clean their email lists to improve deliverability and maintain sender reputation. — https://definable.ai/apps/listclean/
- **Loops.so** — The email platform for modern SaaS. — https://definable.ai/apps/loops_so/
- **Mailboxlayer** — A simple REST-based JSON API for email address validation and verification. — https://definable.ai/apps/mailboxlayer/
- **Mailcheck** — Mailcheck is an email verification service that helps businesses validate email addresses to ensure deliverability and reduce bounce rates. — https://definable.ai/apps/mailcheck/
- **MailerSend** — MailerSend is a transactional email service designed for developers to integrate email sending capabilities into their applications. — https://definable.ai/apps/mailersend/
- **Mails.so** — Mails is an API service that provides powerful email validation capabilities to help maintain a clean and effective email list. — https://definable.ai/apps/mails_so/
- **Missive** — Missive is a collaborative email and chat application designed to streamline team communication and task management. — https://definable.ai/apps/missive/
- **Mixmax** — The #1 Sales Engagement Platform for Gmail. — https://definable.ai/apps/mixmax/
- **NeverBounce** — NeverBounce provides email verification services to ensure the validity of email addresses, enhancing deliverability and reducing bounce rates. — https://definable.ai/apps/neverbounce/
- **Niftyimages** — Allowing marketers to create dynamic and personalized content for your email campaigns. — https://definable.ai/apps/niftyimages/
- **Outlook** — Outlook is Microsoft's email and calendaring platform integrating contacts and scheduling, enabling users to manage communications and events in a unified workspace — https://definable.ai/apps/outlook/
- **Postmark** — Postmark is an email delivery service that enables developers to send transactional emails with high deliverability and detailed analytics. — https://definable.ai/apps/postmark/
- **Proxiedmail** — ProxiedMail offers privacy-focused email services, including automatic creation of proxy emails and receiving emails via webhooks. — https://definable.ai/apps/proxiedmail/
- **Resend** — The universal API for sending emails. — https://definable.ai/apps/resend/
- **Smtp2go** — SMTP2GO is a reliable email delivery service that ensures your emails reach recipients' inboxes efficiently. — https://definable.ai/apps/smtp2go/
- **Spondyr** — Spondyr is a correspondence template management and distribution platform that enables developers to quickly integrate template-driven content delivery via API, supporting email, SMS, fax, and postal mail. — https://definable.ai/apps/spondyr/
- **Supportbee** — SupportBee is a web-based email support tool that helps businesses organize their customer support emails efficiently. — https://definable.ai/apps/supportbee/
- **Tomba** — Tomba is an Email Finder for B2B sales and email marketing. — https://definable.ai/apps/tomba/
- **Unione** — UniOne is an email delivery service offering a versatile Web API and SMTP API for sending transactional and marketing emails. — https://definable.ai/apps/unione/
- **Verifiedemail** — VerifiedEmail offers real-time email verification and bulk email list cleaning services to ensure the accuracy and deliverability of email communications. — https://definable.ai/apps/verifiedemail/
- **Yandex** — Yandex is a Russian internet services provider offering search, email, navigation, and other web-based solutions, often referred to as “Russia’s Google” — https://definable.ai/apps/yandex/
- **Zoho Mail** — Zoho Mail is a secure and ad-free email hosting platform with collaboration tools, calendar integration, and extensive administrative controls — https://definable.ai/apps/zoho_mail/

## Related

- HTML page: https://definable.ai/apps/category/email/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt