<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-09-10</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001333493</issuerCik>
        <issuerName>eHealth, Inc.</issuerName>
        <issuerTradingSymbol>EHTH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001788482</rptOwnerCik>
            <rptOwnerName>H.I.G.-GPII, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001918051</rptOwnerCik>
            <rptOwnerName>Echelon Health SPV, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O H.I.G. CAPITAL, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001918096</rptOwnerCik>
            <rptOwnerName>Echelon Health SPV GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O H.I.G. CAPITAL, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001918030</rptOwnerCik>
            <rptOwnerName>H.I.G. Echelon, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O H.I.G. CAPITAL, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001781863</rptOwnerCik>
            <rptOwnerName>H.I.G. Middle Market LBO Fund III, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001918042</rptOwnerCik>
            <rptOwnerName>H.I.G. Middle Market Advisors III, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O H.I.G. CAPITAL, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001050046</rptOwnerCik>
            <rptOwnerName>MNAYMNEH SAMI</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O H.I.G. CAPITAL, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001050045</rptOwnerCik>
            <rptOwnerName>TAMER ANTHONY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O H.I.G. CAPITAL, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Reporting Persons beneficially own 2,250,000 shares of the Issuer's Series A Preferred Stock (the &quot;Series A Preferred Stock&quot;).  The Series A Preferred Stock provides for paid-in-kind (&quot;PIK&quot;) dividends at an annual rate of 8%, which accrue daily and compound semi-annually.  The Series A Preferred Stock became convertible into shares of the Issuer's common stock (the &quot;Common Stock&quot;) on June 1, 2021.  The number of shares of Common Stock issuable upon conversion of a share of Series A Preferred Stock equals (A) $100 plus PIK dividends calculated up to the most recent semi-annual dividend payment date plus PIK dividends accrued since the most recent semi-annual dividend payment date divided by (B) the conversion price of $79.5861, which is subject to adjustment upon the occurrence of certain specified events.</footnote>
        <footnote id="F2">As of September 10, 2021, the Series A Preferred Stock beneficially owned by the Reporting Persons was convertible into         2,910,708.48 shares of Common Stock.  As of March 25, 2022, the Series A  Preferred Stock beneficially owned by the Reporting Persons was convertible into 3,035,822.97 shares of Common Stock.</footnote>
        <footnote id="F3">The securities reported herein are held directly by Echelon Health SPV, LP (&quot;Echelon LP&quot;), Echelon Health SPV GP, LLC, a Delaware limited liability company (&quot;Echelon GP&quot;), is the general partner of Echelon LP. H.I.G. Echelon, LP, a Delaware limited partnership (&quot;Holdco&quot;), is the sole member of Echelon LP. H.I.G. Middle Market LBO Fund III, L.P., a Delaware limited partnership (&quot;Middle Market LBO III&quot;), is the controlling interest holder of Holdco and Echelon GP. H.I.G. Middle Market Advisors III, LLC, a Delaware limited liability company (&quot;Middle Market Advisors III&quot;), is the general partner of Middle Market LBO III and the manager of Echelon GP. H.I.G.-GPII, Inc., a Delaware corporation (&quot;GPII&quot; and together with Echelon LP, Echelon GP, Holdco, Middle Market LBO III and Middle Market Advisors III, the &quot;HIG Funds&quot;), is the general partner of Holdco and the manager of Middle Market Advisors III.</footnote>
        <footnote id="F4">Sami W. Mnaymneh and Anthony A. Tamer are the sole shareholders of GPII. As a result of the foregoing relationships, each of the HIG Funds and Messrs. Mnaymneh and Tamer may be deemed to beneficially own the Series A Preferred Stock held by Echelon LP. Messrs. Mnaymneh and Tamer disclaim beneficial ownership of the shares held by the HIG Funds except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>ECHELON HEALTH SPV, LP, By: Echelon Health SPV GP, LLC, its general partner, /s/ Richard Siegel</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ECHELON HEALTH SPV GP, LLC, /s/ Richard Siegel</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ECHELON HEALTH, LP, By: H.I.G.-GPII, Inc., its general partner, /s/ Richard Siegel</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>H.I.G. MIDDLE MARKET LBO FUND III, L.P., By: H.I.G. Middle Market Advisors III, LLC, its general partner, /s/ Richard Siegel</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>H.I.G. MIDDLE MARKET ADVISORS III, LLC, /s/ Richard Siegel</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>H.I.G.-GPII, INC., /s/ Richard Siegel</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SAMI W. MNAYMNEH, /s/ Sami W. Mnaymneh</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ANTHONY A. TAMER, /s/ Anthony A. Tamer</signatureName>
        <signatureDate>2022-03-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
