# Email error

**URL:** <https://forum.manager.io/t/email-error/30140>\
**Category:** Uncategorized\
**Created:** [August 21, 2020, 4:05pm UTC](https://forum.manager.io/t/email-error/30140 "2020-08-21T16:05:57Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Gally](https://avatars.discourse-cdn.com/v4/letter/g/958977/32.png) [@Gally](https://forum.manager.io/u/Gally)\
**Post date:** [August 21, 2020, 4:05pm UTC](https://forum.manager.io/t/email-error/30140/1 "2020-08-21T16:05:57Z")

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I tried to email an expense claim and got this error.

I have switch to using Airmail on a MAC instead of Mac mail and got this error. Is it an Airmail integration problem or a Manager Problem.

I can sen and receive emails OK in teh Airmail client .

Thanks

John Gallagher

System.Net.Mail.SmtpException: System.Net.Mail.SmtpException: 535 Authentication credentials invalid  
at System.Net.Mail.SmtpClient.CheckStatus (System.Net.Mail.SmtpClient+SmtpResponse status, System.Int32 i) [0x0001a] in :0  
at System.Net.Mail.SmtpClient.Authenticate (System.String user, System.String password) [0x00065] in :0  
at System.Net.Mail.SmtpClient.Authenticate () [0x000b1] in :0  
at System.Net.Mail.SmtpClient.SendCore (System.Net.Mail.MailMessage message) [0x00132] in :0  
at System.Net.Mail.SmtpClient.SendInternal (System.Net.Mail.MailMessage message) [0x00050] in :0  
at System.Net.Mail.SmtpClient.Send (System.Net.Mail.MailMessage message) [0x00091] in :0  
at ManagerServer.HttpHandlers.Businesses.Business.SendEmail.Post () [0x00572] in :0

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<div class="post-metadata">

**Author:** ![Tut](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/tut/32/3286_2.png) [@Tut](https://forum.manager.io/u/Tut)\
**Post date:** [August 21, 2020, 4:57pm UTC](https://forum.manager.io/t/email-error/30140/2 "2020-08-21T16:57:17Z")

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Read and follow this Guide and any relevant links in it: [Troubleshoot email issues | Manager](https://www.manager.io/guides/9100). If it doesn’t answer your questions, furnish all the information specified.

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**Author:** ![Ealfardan](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.manager.io/ealfardan/32/63166_2.png) [@Ealfardan](https://forum.manager.io/u/Ealfardan)\
**Post date:** [January 18, 2023, 2:53pm UTC](https://forum.manager.io/t/email-error/30140/3 "2023-01-18T14:53:40Z")

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Closed on January 18, 2023, 2:53pm UTC