Claude or ChatGPT for email: how each connects to your inbox
In short
Both read Gmail with their own connector. Claude allows custom connectors on every plan (one on Free), ChatGPT on Business, Enterprise, Edu. Checked Nov 2026.
By FezolaPublished 2 min read
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Both Claude and ChatGPT read Gmail with their own connector, and both accept a custom connector for other mailboxes or several accounts. What differs is the plan you need. Claude allows custom connectors on every plan, with one on Free; ChatGPT allows them on Business, Enterprise and Edu plans. This guide compares how each one connects to your inbox, not how well each writes, and its facts were checked between 14 and 15 November 2026.
How each one connects
| Question | Claude | ChatGPT | Limit |
|---|---|---|---|
| Built-in Gmail | Yes, in Customize, Connectors | Yes, in Settings, Plugins | One Google account is the simple case |
| Draft and send | With your approval by default | Depends on the app and your workspace | Check each setting |
| Attachments | Content not read by the Gmail connector | Depends on the app | Fezola reads PDF, Word, text, images |
| Custom connector | Every plan, one on Free | Business, Enterprise, Edu | Pro is read-only in ChatGPT |
| Several accounts | Through a custom connector | Some apps allow it | Varies by app |
| Other mailboxes | Through a custom connector | Through a custom connector | iCloud, IMAP, Outlook.com |
Claude
According to Anthropic's help article on Google Workspace connectors, the Gmail connector is available on Claude and Claude Desktop. You turn it on in Customize, Connectors, and sign in to Google. It can search and read email, and draft, send, reply and forward with your approval by default. It cannot read the content of attachments.
For other mailboxes, Claude's custom connectors accept remote MCP servers on Free, Pro, Max, Ultra, Team and Enterprise plans, with one custom connector on Free (page read on 14 November 2026). On Team, only owners add a connector to the organization.
ChatGPT
In ChatGPT you open Settings, then Plugins, and find Gmail. According to OpenAI's help page on connected accounts, some apps support more than one connected account, and what an action can do depends on the app, your account and your workspace controls. For custom MCP servers, OpenAI's help page checked on 15 November 2026 lists Business and Enterprise or Edu plans, with Pro read-only: see add an MCP server to ChatGPT.
Using both with one connection
If you use both assistants and have several mailboxes, a hosted custom connector avoids setting everything up twice. Fezola connects Gmail, iCloud, any IMAP mailbox, Outlook.com, Google Calendar, Google Chat and Telegram once, then one URL goes into Claude and ChatGPT, with a shared Memory. Replies are saved as drafts in the mailbox that received the message, and sending is off until you turn it on. It is free for 2 sources; Pro is unlimited for $9 a month or $90 a year, with a 7-day free trial.
See Claude email integration and can ChatGPT read my Gmail for the step-by-step guides, and multiple Gmail accounts for several accounts.
Create your free Fezola account to connect your mailboxes.
Questions and answers
Can Claude read my Gmail?
Yes. According to Anthropic's help article on Google Workspace connectors, the Gmail connector is available on Claude and Claude Desktop: you turn it on in Customize, Connectors and sign in to Google. It can search and read email, and draft, send, reply and forward with your approval by default. It cannot read the content of attachments.
Can ChatGPT read my Gmail?
Yes, through its Gmail plugin, connected from Settings, Plugins. OpenAI's help page on connected accounts says some apps support more than one connected account, and that what an action can do depends on the app, your account and your workspace controls.
Which one allows custom connectors?
Claude's help page, read on 14 November 2026, lists custom connectors through remote MCP servers on Free, Pro, Max, Ultra, Team and Enterprise plans, with one custom connector on Free. For ChatGPT, OpenAI's page checked on 15 November 2026 lists custom MCP servers on Business and Enterprise or Edu plans, with Pro read-only. Check your plan, as these pages change.
Which is better for email?
This guide compares how each connects to a mailbox, not how well each writes. For one Gmail account in one assistant, the built-in connector is the shortest path in both. For several accounts or other mailboxes, a custom connector is what both accept.
Can I use the same mailbox connection in both?
With a hosted custom connector such as Fezola, yes: you connect your mailboxes once, then add one URL to Claude and to ChatGPT. Fezola is a hosted MCP connector that creates drafts by default, so you read and send yourself.
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