How to use the react-native-mail.mail function in react-native-mail

emailLogsToSupport = async (userId: string) => {
    const combinedLogsPath = await this.createCombinedLogs()
    if (!combinedLogsPath) {
      return
    }

    const deviceInfo = {
      version: DeviceInfo.getVersion(),
      buildNumber: DeviceInfo.getBuildNumber(),
      apiLevel: DeviceInfo.getApiLevel(),
      deviceId: DeviceInfo.getDeviceId(),
    }

    const emailSubject = 'Celo support for ' + (userId || 'unknownUser')
    Mailer.mail(
      {
        subject: emailSubject,
        recipients: [CELO_SUPPORT_EMAIL_ADDRESS],
        body: `<b>Support logs are attached...</b><b>${JSON.stringify(deviceInfo)}</b>`,
        isHTML: true,
        attachment: {
          path: combinedLogsPath, // The absolute path of the file from which to read data.
          type: 'txt', // Mime Type: jpg, png, doc, ppt, html, pdf, csv
          name: '', // Optional: Custom filename for attachment
        },
      },
      (error: any, event: any) =&gt; {
        this.showError(error + ' ' + event)
      }
    )
  }

openEmailApp = () => {
    const body =
      s.strings.otp_email_body +
      this.props.username +
      '<br><br>' +
      'iOS <br>edge://recovery?token=' +
      this.props.backupKey +
      '<br><br>' +
      'Android https://recovery.edgesecure.co/recovery?token=' +
      this.props.backupKey

    Mailer.mail(
      {
        subject: s.strings.otp_email_subject,
        recipients: [this.state.emailAddress],
        body: body,
        isHTML: true
      },
      (error, event) =&gt; {
        if (error) {
          console.log(error)
          this.setState({
            emailAppNotAvailable: true
          })
        }
        if (event === 'sent') {
          this.props.returnToSettings()
        }

deliverEmail() {
    let body = this.solid_bits + this.in_development_bits + this.set_lists;

    if (this.email_type == 'formatted') {
      body = body.replace(/(\r\n|\n|\r)/g,"<br>");
    }

    Mailer.mail({
      subject: 'Comedy Companion Export - ' + moment(new Date()).format("MMM DD, YYYY"),
      recipients: [this.email],
      body: body,
      isHTML: this.email_type == 'formatted'
    }, (error, event) =&gt; {
      if(error) {
        alert('Could not send mail. Please send a mail to dereksweet@gmail.com');
      }
    });
  }

const handleSendFeedback = () => {
  const feedbackEmailOptions = {
    recipients: [FeedbackEmailAddress],
    subject: lang.t('wallet.feedback.email_subject'),
  };

  return Mailer.mail(feedbackEmailOptions, handleSendFeedbackError);
};

RNHTMLtoPDF.convert(options).then((result) => {
    RNMail.mail({
        subject: '',
        recipients: [''],
        body: '',
        attachmentPath: result,
        attachmentType: 'pdf',
      }, (error, event) => {
        if(error) {
          AlertIOS.alert('Error', 'Could not send mail. Please send a mail to support@example.com');
        }
      });
    });
  },

openEmailApp (emailAddress: string) {
    Mailer.mail(
      {
        subject: '',
        recipients: [emailAddress],
        body: '',
        isHTML: true
      },
      (error, event) => {
        if (error) showError(error)
      }
    )
  }

openEmailApp (emailAddress: string) {
    Mailer.mail(
      {
        subject: '',
        recipients: [emailAddress],
        body: '',
        isHTML: true
      },
      (error, event) => {
        if (error) showError(error)
      }
    )
  }