Delete all emails from email inboxes via IMAP

imap_delete_emails.py

#!/usr/bin/env python3
import imaplib
import sys
from itertools import chain

server = 'imap.mail.yahoo.com'
port = 993
username = 'someone@yahoo.com'
password = 'hunter2'


def query_yes_no(question, default="yes"):
    """Ask a yes/no question via raw_input() and return their answer.

    "question" is a string that is presented to the user.
    "default" is the presumed answer if the user just hits <Enter>.
        It must be "yes" (the default), "no" or None (meaning
        an answer is required of the user).

    The "answer" return value is True for "yes" or False for "no".

    https://stackoverflow.com/a/3041990/721519
    """
    valid = {"yes": True, "y": True, "ye": True,
             "no": False, "n": False}
    if default is None:
        prompt = " [y/n] "
    elif default == "yes":
        prompt = " [Y/n] "
    elif default == "no":
        prompt = " [y/N] "
    else:
        raise ValueError("invalid default answer: '%s'" % default)

    while True:
        sys.stdout.write(question + prompt)
        choice = input().lower()
        if default is not None and choice == '':
            return valid[default]
        elif choice in valid:
            return valid[choice]
        else:
            sys.stdout.write("Please respond with 'yes' or 'no' "
                             "(or 'y' or 'n').\n")


def grouper(iterable, n):
    count = 0
    current = []
    for i in iterable:
        if count >= n:
            count = 0
            yield current
            current = []
        count += 1
        current.append(i)

    if current:
        yield current


m = imaplib.IMAP4_SSL(host=server, port=port)

m.login(username, password)

boxes = [b.decode().split('"')[-2] for b in m.list()[1]]

print('Boxes', boxes)

if not query_yes_no('Continue?'):
    sys.exit()

for box in boxes:
    print('Delete all from: {} ?'.format(box))
    if not query_yes_no('Process?'):
        continue

    while True:
        m.select(box)
        typ, data = m.search(None, 'ALL')
        if typ != 'OK':
            print('NOT OK! done with this box')
            break
        print('Got fresh list of mails')
        groups = grouper(chain.from_iterable(y.decode().split() for y in data),
                         200)
        had_any = False
        for group in groups:
            had_any = True
            print('Clobbering {} mails'.format(len(group)))
            typ, _ = m.store(','.join(group), '+FLAGS.SILENT', r'(\Deleted)')
            if typ != 'OK':
                print('NON-OK on store delete. Skipping Box')
                break

        print('Expunging')
        m.expunge()

        if not had_any:
            print('Done with this box')
            break

print('All boxes done')

output.txt

$ python3 email.py

Boxes ['Archive', 'Bulk Mail', 'Draft', 'Inbox', 'Saves', 'Sent', 'Trash', 'junk']
Continue? [Y/n]
Delete all from: Archive ?
Process? [Y/n] n
Delete all from: Bulk Mail ?
Process? [Y/n] n
Delete all from: Draft ?
Process? [Y/n] n
Delete all from: Inbox ?
Process? [Y/n]
Got fresh list of mails
Done with this box
Expunging
Delete all from: Saves ?
Process? [Y/n] n
Delete all from: Sent ?
Process? [Y/n] n
Delete all from: Trash ?
Process? [Y/n] Y
Got fresh list of mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 16 mails
Got fresh list of mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 16 mails
Got fresh list of mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 16 mails
Got fresh list of mails
Done with this box
Expunging
Delete all from: junk ?
Process? [Y/n]
Got fresh list of mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 65 mails
Got fresh list of mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 65 mails
Got fresh list of mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 200 mails
Clobbering 65 mails
Got fresh list of mails
Done with this box
Expunging