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  • Emails sending can fail for a number of reasons

    See Contact Form 7 Email Issues – this links to a much more comprehensive article which also covers emails being considered spam.

    See also Best Practice to Set Up Mail

    Using Reply-to: [your-name] <[your-email]> in Additional Header causing email not received in gmail. This used to work for a year until this October.

    1. Are you sure??? This is repeatedly reproducible?

    2. Some SMTP plugins, like Easy SMTP I think, are buggy with reply-to addresses. Are you using an SMTP plugin?

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