[Email] Fetch Email through IMAP without concurrency and filter

[ShihChun-H]

Describe Your Proposed Tutorial

Issue Description

Current State

• Current code fetch Email through IMAP without concurrency and filter.

Why We Want to Change?

• We can fetch more emails without taking a longer time.

Proposed Change

• Find a better way to improve the performance of fetching email through IMAP.

---

Rules for the Component Hackathon

• Each issue will only be assigned to one person/team at a time.
• You can only work on one issue at a time.
• To express interest in an issue, please comment on it and tag @kuroxx, allowing the Instill AI team to assign it to you.
• Ensure you address all feedback and suggestions provided by the Instill AI team.
• If no commits are made within five days, the issue may be reassigned to another contributor.
• Join our Discord to engage in discussions and seek assistance in #hackathon channel. For technical queries, you can tag @chuang8511.

---

Component Contribution Guideline | Documentation | Official Go Tutorial

[linear]

INS-6355 [Email] Fetch Email through IMAP without concurrency and filter