Common Questions

• Nylas API v2 End of Life Support Timeline
• API v2 <> API v3 Migration FAQ
• Service Accounts not working with Office365 and Graph
• Migrating accounts from V2 to V3
• How do I fetch emails created before the accounts was connected in V3, historical sync?
• How do I migrate my V2 organization, applications, accounts and objects to V3

See all 12 articles

• Customize the Style of Nylas Hosted Authentication
• Microsoft Office 365 Admin Approval
• Why do I see different branding on Google OAuth consent screens with Nylas?
• Issues with Gmail accounts or grants using IMAP
• AADSTS50146: This application is required to be configured with an application-specific signing key.
• How to determine if account needs reauthentication in API V3, check Grant state?

See all 34 articles

• Multiple trash folders, which do I use?
• Understanding "This App May Be Risky" Warnings Post-Publisher Verification
• Microsoft don't include the body of previous messages in a Thread
• Why does Gmail returns 2 attachments for a message when ics file is attached?
• Resolving "501 Syntax Error - Line Too Long" in SMTP Emails
• Sending attachments in API V3 larger than 3MB via multipart

See all 35 articles

• How does buffer time work in Nylas Scheduler?
• How to add my custom fields to the confirmation email on my Scheduler
• How do I change the name of Scheduler
• How can I capture when a customer has created a scheduler slug?
• How do I enable group or collective meetings?
• How do I whitelabel scheduler?

See all 26 articles

• Why does a contact fail to update, with the values reverting back to their original state after an attempt to update them?
• Why do my accounts stay in the partial state?
• Why is the created_at timestamp less than the email received_at?
• Nylas has not synced all my emails I am using Nylas Free - limited to 10 accounts
• Delays in processing emails for Gmail accounts.
• Gmail accounts syncing with delays? Ensure you have PubSub setup

See all 15 articles

• Microsoft bounces: Why you receive both thread.replied and message.bounce_detected
• Why do I need to handle both message.created and message.updated webhooks in Nylas v3?
• What's the difference between Google Pub/Sub and Nylas PubSub Notification Channel?
• Webhook Additional Fields on API v3
• Why don't I receive webhooks for every change made to an email object?
• What is the Difference Between Realtime and Incremental Webhooks in V3?

See all 15 articles

• Why do some emails show only the 'from' field with missing recipient information in Nylas API v3?
• How to save a message as a EML file.
• Message getting disappeared after moving between folders
• Why is my message not sent when I received a 200 response from send API call?
• How do we know when a message is delete?
• Why does the search endpoint for Microsoft accounts returns different results than from the email client?

See all 8 articles

• How do I authenticate an IMAP account with a non-email username?
• How to resolve 'internationalized email message (SMTPUTF8) not supported' error after upgrading to V3?
• Receiving 429/403 error - Calendar usage limits exceeded
• Localhost not able to be used as Redirect URL
• Capturing Booking Details in Nylas Scheduling V3
• Failed to link V2 and V3 applications.

See all 44 articles

• GMAIL server replies with 550-5.7.26 This mail has been blocked because the sender is unauthenticated
• Why are bounce replies or non-delivery reports (NDRs) not available?
• Why do I not receive a tracking message.opened webhook?
• Can you please let us know why this email bounced?
• SPF, DKIM, DMARC, and other domain records for sending
• We receive a 413 entity too large error when sending a file less than the 25mb limit

See all 7 articles

• Getting attachment with size 0
• How can I get an attachment from an email?

• Why is my account status still initializing even though the configuration is correct?

• Why am I receiving duplicate event.updated webhooks with different object IDs for the same Microsoft recurring series?
• Identifying Event Creators Across Google, Microsoft, and iCloud
• Troubleshooting: Recurring Event Instances Out of Order (Master Event Filtering)
• Choosing the Right Endpoint for Calendar Event Fetching: import events vs. Get all Events
• Why isn't Microsoft Teams conferencing working with autocreate for some accounts?
• Why am I only seeing One Month of Recurring Events from Microsoft?

See all 15 articles

• How can we share emails across multiple accounts?
• How can we track emails sent between our users across our application?
• Why am I seeing a high volume, large quantity of link clicks in an e-mail?
• Using tracking, how to prevent an open being recorded when the sender opens their own email?

• How to get a count of messages in v3?
• PHP | How to send a multipart message with an attachment larger than 3 MB using PHP?
• Email was sent but nobody received it
• How can I send using an alias? Sending using a different from name.
• Why has the mail provider rejected my message when sending through the API?
• Why am I receiving multiple 'message.opened' webhook notifications?

• 🛡️ Does Nylas Offer Prizes for Security Vulnerability Disclosure?
• Is Nylas Microsoft Certified?
• How to complete the Google Security Review
• Are you GDPR compliant? Request DPA.
• When authenticating receive 403 disallowed_useragent
• Do you support DUO or Yubikey?

See all 7 articles

• Are object ids unique among both Nylas apps Datacenters?

• Applications not visible via Nylas V3 dashboard.
• What happens if I change Google/Microsoft OAuth client ID and secret in the Nylas Dashboard?

• Where is the option for Components?

• Nylas Sandbox vs. Production Applications: Understanding Limitations
• V3 dashboard has a billing role, what details of the credit card can those not in the billing role see?