One connector, every Claude account: don't reconnect everything when you switch accounts

Short answer: connectors in Claude are tied to the account that added them, so when you switch accounts you have to add them again. If your mail goes through one connector, that is one step per account instead of one per mailbox. Connect everything once in Fezola, then add only Fezola to each Claude (or ChatGPT on Business plans) account.

Why switching accounts hurts

People use more than one Claude account for ordinary reasons: the weekly quota of one account is almost used up, one account is personal and the other is for work, or an employer rolls out Team or Enterprise. Each time, the connectors you set up are not there.

What Anthropic's help center says (checked 11 November 2026):

• Remote connectors are configured and brokered through your Claude account (custom connectors).
• When you move a personal account into a Team or Enterprise organization, connections to apps and services are turned off and you reconnect each one from the organization account. Custom connectors you added yourself are added again there, and your organization's policy may not allow them (move your personal account).
• Two accounts stay separate: you switch between them from the account menu.

What each situation costs

Situation	What happens to your connectors	What you do
Personal account moved into a Team or Enterprise organization	Connections are turned off, custom connectors are not moved	Reconnect each app, re-add each custom connector, if the organization allows them
Second account with another email (quota, work and personal)	It is a separate account with its own connector list	Add the connectors you need to that account too
Joining a Team or Enterprise organization	An owner adds a custom connector once, each member signs in with their own account	Connect it from Customize, then Connectors
Free plan	One custom connector	Choose it carefully: one URL that holds many services is the best use

What it costs with one connector per service

Say you use five connectors for mail: two Gmail accounts, an iCloud mailbox, a work mailbox and Telegram. Switching account means five sign-in flows and five approvals, and on the Free plan you cannot even add them all, because Free allows one custom connector.

The method: connect once in Fezola

Fezola is one custom connector that holds all your mailboxes behind one URL, https://api.fezola.com/mcp. You connect Gmail, Outlook.com, iCloud, Yahoo, any IMAP mailbox, Google Chat and Telegram once, on the Fezola site. After that, each Claude account only needs that one URL.

Example, for illustration. This is not a real account.

Your personal Claude account is almost out of messages for the week. You switch to your work account and ask: "What needs an answer today in all my mailboxes?"

1. Open the work account from the account menu in Claude.
2. Add Fezola once: Customize, Connectors, + Add, Add custom connector, name it Fezola, paste https://api.fezola.com/mcp and sign in. Your mailboxes are already there: you did not connect them again. See how to add a custom connector to Claude for the exact menus.
3. Ask your question. Each result names its mailbox, so you know which account it came from.

Each Claude account signs in to Fezola on its own, and Fezola lists the assistants that have access, so you can revoke one without touching the others. Nothing is copied from one account to the other: the mailboxes live in Fezola, not in Claude.

Honest limits

• Fezola only groups mail, Google Chat and Telegram. Your other connectors (Notion, Slack, a calendar) still have to be added to each Claude account.
• It is not a transfer of your accounts. Fezola does not move your Claude settings, chats or other connectors.
• Fezola is a hosted service. Mailboxes are read live when your assistant asks. Drafts by default, sending only if you switch it on per mailbox.
• Team and Enterprise policy comes first. If your organization restricts custom connectors, ask an owner to add Fezola in Organization settings.

ChatGPT, in one line

On ChatGPT, custom MCP servers are available on Business and Enterprise/Edu plans (Pro is read-only). The same URL works there: add it to each account that allows it.

Try it

Create a free Fezola account, add your mailboxes in Sources, then add https://api.fezola.com/mcp to each Claude account. For several Gmail accounts, read multiple Gmail accounts in Claude and ChatGPT. To compare other options, see the best email MCP servers, and what is Fezola says who we are.