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Authenticate a single sender


To protect your sending reputation and to uphold legitimate sending behavior, Twilio requires that customers authenticate or verify their sender identities.


Verify a sender

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To verify the identity of a single sender, add the sender's contact details, including their email address, in the Twilio SendGrid console.

  1. Log in to the Twilio SendGrid console(link takes you to an external page) if needed.

  2. Go to Settings > Sender Authentication(link takes you to an external page).

  3. Under Single Sender Verification, click Verify a Single Sender. The Create a Sender(link takes you to an external page) panel appears.

  4. Fill in all of the fields displayed in the panel.

    FieldAccepted value
    From NameA human-readable name displayed to your recipient when they receive their email.
    From Email AddressThe email address displayed to your recipient that sent the email message. Twilio sends the verification email to this email address.
    Reply ToThe email message to which any replies go.
    Company AddressThe street address associated with your business' physical address.
    CityThe locality that contains the mailing address associated with your business' physical address.
    StateThe division of the country that contains the mailing address associated with your business' physical address.
    Zip CodeThe postal code that routes postal mail to the mailing address associated with your business' physical address.
    CountryThe country that contains the mailing address associated with your business' physical address.
    NicknameA label that identifies your sender identity. Your recipients can't see this label.

    If you don't receive a verification email after an hour, return to the Sender settings and confirm that the "From" email is a valid address.

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    Avoid email addresses from large inbox providers

    If you enter an email address from some large inbox providers, Twilio displays a warning that you shouldn't use that email address. Messages from this domain might fail a DMARC check. To learn more about this warning, see the DMARC page.

  5. Click Create.

  6. Check the inbox of the email address in the From Email Address field.

  7. Click the link in the email to verify the Sender address.

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Email addresses from authenticated domains verified

If you configured an authenticated domain in the Twilio SendGrid console and the domain of your sender email address matches that domain exactly, Twilio verifies your sender identity as a matter of course.

A page confirming the verification of your address displays.


Resend a verification email

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To resend the verification email, complete this procedure:

  1. Log in to the Twilio SendGrid console(link takes you to an external page) if needed.
  2. Go to Settings > Sender Authentication(link takes you to an external page).
  3. Click ⋮ next to the desired email address to verify.
  4. Select Resend Verification.
  5. Twilio sends another confirmation email to the address you want to verify.

To add more addresses or make any changes to the address you just verified, click Return to Single Sender Verification.