Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

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  • Graph: IMAP Connection Closes when Trying to Delete Mail Item that is Already Gone
    Open
    • Is something wrong?

    Difficulty 2/5 1-3 hours Newbie friendliness 85/100

    mguessan/davmail#558 ·

    Maintainers usually reply within 2 days

  • com.ctc.wstx.exc.WstxParsingException: Invalid character reference: null character not allowed in XML content.
    Open
    • Is something wrong?

    Difficulty 1/5 Under an hour Newbie friendliness 85/100

    mguessan/davmail#557 · 1 comment ·

    Maintainers usually reply within 2 days

  • Support Exchange Online Archive in O365Graph mode
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 30/100

    mguessan/davmail#556 ·

    Maintainers usually reply within 2 days

  • IMAP: UID MOVE/COPY return no COPYUID and MOVE sends no EXPUNGE responses (UIDPLUS advertised)
    Open
    • Is something wrong?
    AI enhancement

    Difficulty 4/5 3-5 days Newbie friendliness 62/100

    mguessan/davmail#546 · 1 comment ·

    Maintainers usually reply within 2 days

  • invalid duration value , Invalid alarm for item
    Open
    • Is something wrong?

    Difficulty 3/5 Half a day Newbie friendliness 66/100

    mguessan/davmail#543 ·

    Maintainers usually reply within 2 days

  • Graph: DUE missing on To Do tasks whose due date was written through EWS; fixed after re-saving through Graph
    Open
    • Is something wrong?
    AI

    Difficulty 4/5 3-5 days Newbie friendliness 52/100

    mguessan/davmail#537 ·

    Maintainers usually reply within 2 days

  • Graph: VTODO UID from the client is not preserved on create; item is re-listed under the Graph id and GET by client name fails
    Open
    • Is something wrong?
    AI

    Difficulty 2/5 1-3 hours Newbie friendliness 72/100

    mguessan/davmail#535 ·

    Maintainers usually reply within 2 days

  • Graph backend: sendMessage ignores davmail.smtpSaveInSent (MIME sendMail always saves to Sent Items)
    Open
    • Is something wrong?
    duplicate

    Difficulty 4/5 3-5 days Newbie friendliness 48/100

    mguessan/davmail#525 · 1 comment ·

    Maintainers usually reply within 2 days

  • Use Intune and Microsoft Identity Broker for Office 365 Authentication
    Open
    • Is something wrong?
    help wanted

    Difficulty 4/5 3-5 days Newbie friendliness 45/100

    mguessan/davmail#502 · 3 comments ·

    Maintainers usually reply within 2 days

  • Make Flathub package verified
    Open
    • Is something wrong?

    Difficulty 2/5 1-3 hours Newbie friendliness 53/100

    mguessan/davmail#498 · 4 comments ·

    Maintainers usually reply within 2 days

  • Graph: Support keeping separate start and end timezones on events
    Open
    • Is something wrong?
    enhancement

    Difficulty 5/5 Over a week Newbie friendliness 35/100

    mguessan/davmail#489 · 1 comment ·

    Maintainers usually reply within 2 days

  • [REGRESSION] No tray icon; permanent dialogue box
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 45/100

    mguessan/davmail#460 · 12 comments · 1 reaction ·

    Maintainers usually reply within 2 days

  • davmail - ErrorInvalidIdMalformed Id is malformed.
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 48/100

    mguessan/davmail#459 · 2 comments · 1 reaction ·

    Maintainers usually reply within 2 days

  • davmail - UnknownError
    Open
    • Is something wrong?
    bug

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    mguessan/davmail#452 · 10 comments ·

    Maintainers usually reply within 2 days

  • Alternative Authentification
    Open
    • Is something wrong?
    answered

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    mguessan/davmail#447 · 1 comment ·

    Maintainers usually reply within 2 days

  • Provide support for MailboxNotEnabledForRESTAPI
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    mguessan/davmail#440 · 2 comments ·

    Maintainers usually reply within 2 days

  • [Feature-Proposal] Script to lauch Thunderbird
    Open
    • Is something wrong?

    Difficulty 3/5 1-2 days Newbie friendliness 48/100

    mguessan/davmail#429 · 2 comments ·

    Maintainers usually reply within 2 days

  • State of tray icon support on Linux
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 45/100

    mguessan/davmail#428 · 9 comments · 3 reactions ·

    Maintainers usually reply within 2 days

  • Graph: Implement Graph backend to eventually replace EWS and support outlook.com access
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 20/100

    mguessan/davmail#404 · 11 comments · 15 reactions ·

    Maintainers usually reply within 2 days

  • Problem using DavMail on Linux with FIPS mode enabled
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    mguessan/davmail#371 · 4 comments ·

    Maintainers usually reply within 2 days

  • Add support for JMAP (JSON Meta Application Protocol), as an alternative to IMAP + SMTP
    Open
    • Is something wrong?
    enhancement

    Difficulty 5/5 Over a week Newbie friendliness 35/100

    mguessan/davmail#365 · 2 comments · 4 reactions ·

    Maintainers usually reply within 2 days

  • Option for DavMail to abort on failure
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    mguessan/davmail#360 · 3 comments ·

    Maintainers usually reply within 2 days

  • O365 Calendar parsing error
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 48/100

    mguessan/davmail#325 · 5 comments ·

    Maintainers usually reply within 2 days

  • PKCS11 not working on linux
    Open
    • Is something wrong?
    answered

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    mguessan/davmail#319 · 5 comments ·

    Maintainers usually reply within 2 days

  • Unable to download some messages
    Open
    • Is something wrong?

    Difficulty 3/5 1-2 days Newbie friendliness 25/100

    mguessan/davmail#313 · 2 comments ·

    Maintainers usually reply within 2 days

  • SMTP and shared mailboxes results in AADSTS50059 return code.
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 48/100

    mguessan/davmail#308 · 8 comments ·

    Maintainers usually reply within 2 days

  • Improving the dialog to get the authentication token
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    mguessan/davmail#283 · 19 comments ·

    Maintainers usually reply within 2 days

  • Support listening on UNIX domain sockets
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 35/100

    mguessan/davmail#280 · 2 comments · 2 reactions ·

    Maintainers usually reply within 2 days

  • caldav port lists DELETE in http OPTIONS command, even when user is not yet authenticated
    Open
    • Is something wrong?

    Difficulty 2/5 1-3 hours Newbie friendliness 56/100

    mguessan/davmail#267 ·

    Maintainers usually reply within 2 days

  • Bug in vcf handling (multiple types)
    Open
    • Is something wrong?

    Difficulty 3/5 1-2 days Newbie friendliness 55/100

    mguessan/davmail#256 · 1 comment ·

    Maintainers usually reply within 2 days

  • sub folders of contacts are not available
    Open
    • Is something wrong?
    answered

    Difficulty 4/5 3-5 days Newbie friendliness 42/100

    mguessan/davmail#255 ·

    Maintainers usually reply within 2 days

  • provide with a /dev/log syslog example
    Open
    • Is something wrong?

    Difficulty 1/5 Under an hour Newbie friendliness 45/100

    mguessan/davmail#244 · 2 comments ·

    Maintainers usually reply within 2 days

  • FEATURE: multiple davmail.url entries
    Open
    • Is something wrong?
    enhancement

    Difficulty 4/5 3-5 days Newbie friendliness 48/100

    mguessan/davmail#242 · 1 comment ·

    Maintainers usually reply within 2 days

  • FEATURE: proxy protocol support
    Open
    • Is something wrong?
    enhancement

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    mguessan/davmail#241 ·

    Maintainers usually reply within 2 days

  • FEATURE: maybe add a health check endpoint
    Open
    • Is something wrong?
    enhancement

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    mguessan/davmail#240 ·

    Maintainers usually reply within 2 days

  • CalDAV sync incomplete after ErrorMessageSizeExceeded
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 45/100

    mguessan/davmail#231 · 2 comments ·

    Maintainers usually reply within 2 days

  • Proxy only SMTP and Caldav
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 25/100

    mguessan/davmail#196 ·

    Maintainers usually reply within 2 days

  • cannot autocomplete Folders in mutt
    Open
    • Is something wrong?

    Difficulty 3/5 1-2 days Newbie friendliness 48/100

    mguessan/davmail#176 · 1 comment ·

    Maintainers usually reply within 2 days

  • Running DavMail with Termux on android phone
    Open
    • Is something wrong?
    answered

    Difficulty 5/5 Over a week Newbie friendliness 20/100

    mguessan/davmail#84 · 14 comments ·

    Maintainers usually reply within 2 days

  • On Ubuntu 19.10 DavMail tries to upgrade from trunk to 5.3.1.3079-1
    Open
    • Is something wrong?

    Difficulty 2/5 1-3 hours Newbie friendliness 38/100

    mguessan/davmail#67 ·

    Maintainers usually reply within 2 days

  • Graph: calendar events differ from EWS iCalendar output, Exchange properties missing
    Possibly taken Open
    • Is something wrong?
    AI question

    Difficulty 4/5 3-5 days Newbie friendliness 52/100

    mguessan/davmail#549 · 4 comments ·

    Maintainers usually reply within 2 days

  • Regression: Connection pool shut down
    Possibly taken Open
    • Is something wrong?
    bug fixed

    Difficulty 3/5 1-2 days Newbie friendliness 45/100

    mguessan/davmail#544 · 13 comments ·

    Maintainers usually reply within 2 days

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