[enhancement]: Support for more IMAP extensions

Which feature or improvement would you like to request?

Such as:

• RFC 8508 - IMAP REPLACE Extension
• RFC 7889 - The IMAP APPENDLIMIT Extension
• RFC 7377 - IMAP4 Multimailbox SEARCH Extension
• RFC 4468 - Message Submission BURL Extension
• RFC 6203 - IMAP4 Extension for Fuzzy Search
• RFC 5423 - Internet Message Store Events
• RFC 5436 - Sieve Notification Mechanism: mailto
• RFC 5465 - IMAP NOTIFY Extension
• RFC 2087 - IMAP4 QUOTA extension
• RFC 6785 - Support for IMAP Events in Sieve

Is your feature request related to a problem?

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