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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-06-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001803901</issuerCik>
        <issuerName>Talkspace, Inc.</issuerName>
        <issuerTradingSymbol>TALK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001601099</rptOwnerCik>
            <rptOwnerName>Shachar Erez</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TALKSPACE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2578 BROADWAY #607</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-06-22</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8573437</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8573437</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Qumra Capital II, L.P.</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the business combination of Hudson Executive Investment Corp. and Groop Internet Platform, Inc. (d/b/a Talkspace) (&quot;Legacy Talkspace&quot;), each share of Legacy Talkspace outstanding common and preferred stock was automatically converted into the right to receive a combination of cash and a number shares of the Issuer's Common Stock based on a 1-to-1.1341 exchange ratio (the &quot;Exchange Ratio&quot;) in accordance with the merger agreement governing the business combination. In addition, each outstanding Legacy Talkspace stock option was automatically converted into a corresponding stock option of the Issuer based on the Exchange Ratio and with the same terms and vesting conditions as the Legacy Talkspace equity awards.</footnote>
        <footnote id="F2">Qumra Capital GP II, L.P. (&quot;Qumra GP II&quot;) is the general partner of be held by Qumra Capital II, L.P (&quot;Qumra II&quot;) and Qumra Capital Israel I Ltd. (&quot;Qumra Capital Israel I&quot;) is the general partner of Qumra GP II. Mr. Shachar is a managing partner of Qumra Capital Israel I and disclaims beneficial ownership of the shares held of record by Qumra II except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: /s/ John Reilly, Attorney-in-fact</signatureName>
        <signatureDate>2021-06-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
